WO2021047574A1 - 氧化锆陶瓷、制备氧化锆陶瓷的方法及其应用和组合物 - Google Patents
氧化锆陶瓷、制备氧化锆陶瓷的方法及其应用和组合物 Download PDFInfo
- Publication number
- WO2021047574A1 WO2021047574A1 PCT/CN2020/114398 CN2020114398W WO2021047574A1 WO 2021047574 A1 WO2021047574 A1 WO 2021047574A1 CN 2020114398 W CN2020114398 W CN 2020114398W WO 2021047574 A1 WO2021047574 A1 WO 2021047574A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zirconia
- alumina
- powder
- content
- composition
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/486—Fine ceramics
- C04B35/488—Composites
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/481—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates containing silicon, e.g. zircon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/486—Fine ceramics
- C04B35/488—Composites
- C04B35/4885—Composites with aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62625—Wet mixtures
- C04B35/6264—Mixing media, e.g. organic solvents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
- C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63416—Polyvinylalcohols [PVA]; Polyvinylacetates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63488—Polyethers, e.g. alkylphenol polyglycolether, polyethylene glycol [PEG], polyethylene oxide [PEO]
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/636—Polysaccharides or derivatives thereof
- C04B35/6365—Cellulose or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
- C04B2235/3248—Zirconates or hafnates, e.g. zircon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6565—Cooling rate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
- C04B2235/6583—Oxygen containing atmosphere, e.g. with changing oxygen pressures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
- C04B2235/661—Multi-step sintering
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
- C04B2235/661—Multi-step sintering
- C04B2235/662—Annealing after sintering
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/76—Crystal structural characteristics, e.g. symmetry
- C04B2235/765—Tetragonal symmetry
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9646—Optical properties
- C04B2235/9661—Colour
Definitions
- This application relates to the field of zirconia ceramics, in particular to zirconia ceramics, methods for preparing zirconia ceramics, and applications and compositions thereof.
- Zirconia ceramics have the characteristics of good corrosion resistance, high hardness, high strength, and high toughness (up to 5-6MPa m 1/2 ), but they still have the disadvantage of weak impact resistance when they are made into large-area appearance parts.
- high density and dielectric constant
- the density and dielectric constant can be reduced by adding more alumina, the high hardness and high brittleness of alumina will lead to a significant increase in processing difficulty, resulting in low yield and high cost. Therefore, the development of a ceramic with high impact resistance and toughness is very important for the application of ceramic back covers in the 5G era.
- the purpose of this application is to overcome the existing problems of zirconia ceramics that cannot have both impact resistance and toughness, and to provide zirconia ceramics, methods for preparing zirconia ceramics, and applications and compositions thereof.
- the first aspect of the present application provides a zirconia ceramic
- the zirconia ceramic contains 60.5-70.5wt% of Zr, 2.5-5.45wt% of Y, and 0.05-2.65wt% of Al in terms of elements.
- the M includes at least one of Nb and Ta; and the phase composition of the zirconia ceramic includes: tetragonal zirconia, alumina and The sum of the content of zirconium silicate, alumina and zirconium silicate is 0.2-12wt%, the content of the tetragonal zirconia is 84-99.3wt%; the tetragonal zirconia includes yttrium oxide, M x O y and A solid solution formed by zirconia; the x satisfies 1 ⁇ x ⁇ 3, and the y satisfies 3 ⁇ y ⁇ 6.
- the second aspect of the present application provides a zirconia ceramic
- the phase composition of the zirconia ceramic includes: tetragonal zirconia, alumina and zirconium silicate, the sum of the content of alumina and zirconium silicate is 0.2-12wt%
- the content of the tetragonal zirconia is 84-99.3wt%
- the tetragonal zirconia includes a solid solution formed by yttrium oxide, M x O y and zirconia, and the content of Y in the zirconia ceramic is 2.5-5.45wt%, the content of M is 0.34-2.8wt%
- the M includes at least one of Nb and Ta, and the x satisfies 1 ⁇ x ⁇ 3, and the y satisfies 3 ⁇ y ⁇ 6.
- the third aspect of the present application provides a composition
- a composition comprising: a zirconium oxide-containing component, aluminum oxide, zirconium silicate, and M x O y ; wherein the total amount of the zirconium oxide-containing component is used as a reference ,
- the zirconium oxide-containing component contains zirconium oxide and 2-4 mol% yttrium oxide;
- the content of the zirconia-containing component is 84-99.3wt%
- the total content of alumina and zirconium silicate is 0.2-12wt%
- the content of M x O y is 0.5-4wt %.
- the fourth aspect of the present application provides a method for preparing zirconia ceramics, including:
- the fifth aspect of the present application provides an application of the above-mentioned zirconia ceramics in the preparation of electronic product housings or decorations.
- the present application provides a zirconia ceramic
- the zirconia ceramic contains in terms of elements: 60.5-70.5wt% Zr, 2.5-5.45wt% Y, 0.05-2.65wt% Al, 0.015-1.07wt% Si , And 0.34-2.8wt% Nb and/or Ta; and the phase composition of the zirconia ceramic includes: 84-99.3wt% tetragonal zirconia, 0.2-12wt% alumina and zirconium silicate;
- the tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and/or tantalum oxide and zirconium oxide.
- the mass ratio of the alumina and zirconium silicate is (1:1)-(1:5).
- the present application provides a composition for preparing the zirconia ceramic of the present application, the composition comprising zirconia powder, alumina powder, zirconium silicate powder, and niobium oxide and/or tantalum oxide powder; wherein The total amount of the zirconia powder is a reference, and the zirconia powder contains 2-4 mol% of yttrium oxide;
- the content of zirconia powder is 84-99.3wt%
- the total content of alumina powder and zirconium silicate powder is 0.2-12wt%
- niobium oxide and/or tantalum oxide The content is 0.5-4wt%.
- the mass ratio of alumina to zirconium silicate is (1:1)-(1:5).
- This application provides a method for preparing zirconia ceramics, including:
- the present application provides zirconia ceramics with excellent impact resistance and high toughness at the same time.
- Figure 1 is an SEM image of the ceramic prepared in Example 1 of this application.
- Figure 2 is an SEM image of the ceramic prepared in Comparative Example 2 of the application.
- the first aspect of the present application provides a zirconia ceramic
- the zirconia ceramic contains in terms of elements: 60.5-70.5wt% Zr, 2.5-5.45wt% Y, 0.05-2.65wt% Al, 0.015-1.07wt % Si, and 0.34-2.8wt% M
- the M includes at least one of Nb and Ta
- the phase composition of the zirconia ceramic includes: tetragonal zirconia, alumina and zirconium silicate, alumina and The sum of the content of zirconium silicate is 0.2-12wt%, and the content of tetragonal zirconia is 84-99.3wt%.
- the tetragonal zirconia includes a solid solution formed by yttrium oxide, M x O y and zirconia, and x satisfies 1 ⁇ x ⁇ 3, the y satisfies 3 ⁇ y ⁇ 6.
- the phase composition of zirconia ceramics includes: tetragonal phase zirconia, alumina and zirconium silicate, the sum of the content of alumina and zirconium silicate is 0.2-12wt%, the tetragonal phase zirconia The content is 84-99.3wt%, the tetragonal phase zirconia includes a solid solution formed by yttrium oxide, M x O y and zirconia. The content of Y in the zirconia ceramic is 2.5-5.45wt%, and the content of M is 2.5-5.45wt%. 0.34-2.8wt%, M includes at least one of Nb and Ta, x satisfies 1 ⁇ x ⁇ 3, and y satisfies 3 ⁇ y ⁇ 6.
- the zirconia ceramic contains 60.5-70.5wt% Zr, 2.5-5.45wt% Y, 0.05-2.65wt% Al, 0.015-1.07wt% Si, and 0.34-2.8wt% M in terms of elements.
- the zirconia ceramic further includes an appropriate amount of O.
- O element can be determined according to the content of Zr, Y, Al, Si and M elements to form but not limited to zirconia, oxide Yttrium, zirconium silicate, alumina, M x O y, etc.
- x and y can determine x and y according to the valence of M required.
- x may be 2, y may be 5, and M x O y may include at least one of Nb 2 O 5 and Ta 2 O 5.
- the ceramic has high density, high toughness and high impact resistance, and the color can be white.
- the zirconia ceramic comprises: 63-68.75wt% Zr, 3.35-4.7wt% Y, 0.53-1.58wt% Al, 0.15-0.92wt% Si, and 0.68-2.1wt% %M. That is, the zirconia ceramic contains 0.68-2.1 wt% of Nb and/or Ta, that is, the zirconia ceramic contains at least one of Nb and Ta, and the content of at least one of Nb and Ta is 0.68-2.1 wt%. According to the embodiment of the present application, the zirconia ceramic further includes an appropriate amount of O.
- the mass ratio of alumina and zirconium silicate is 1:(1-5), preferably 1:(1-2.25).
- limiting the content relationship between Al and Si in zirconia ceramics is beneficial to improve the performance of the ceramics, and has both high impact resistance and toughness.
- the mass ratio of Al:Si is (2:3)-(5:1), more preferably (1.6:1)-(3.5:1).
- the mass ratio can be selected from (1.6:1), (1.8:1), (2.0:1), (2.2:1), (2.4:1), (2.6:1), (2.8:1), (3.0 : 1), (3.2:1), (3.4:1) and (3.5:1), and the range consisting of any of the above values.
- the content of the above-mentioned elements can be detected by high-energy XRF.
- the elemental composition of zirconia ceramics may also contain other elements, such as oxygen.
- the zirconia ceramics provided in this application can be measured by XRD.
- the phase composition of the zirconia ceramic includes: tetragonal zirconia, alumina and zirconium silicate, wherein the sum of the content of alumina and zirconium silicate is 2-9wt%, and the content of the tetragonal zirconia is 88- 97wt%.
- the diffraction peak of the tetragonal phase of zirconia appears, which is due to the addition of yttrium oxide, niobium oxide and/or tantalum oxide in the preparation of zirconia ceramics, which form a solid solution with zirconia.
- the solid solution may be a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide, a solid solution formed by yttrium oxide, tantalum oxide and zirconium oxide, or a solid solution formed by yttrium oxide, niobium oxide, tantalum oxide and zirconium oxide.
- the zirconia ceramics may also contain other phases, but they have no negative impact on the zirconia ceramics of the present application. In this application, the above-mentioned content of the phase contained in the zirconia ceramic is based on the zirconia ceramic.
- the zirconia ceramic of the present application has high impact resistance and toughness.
- the toughness of zirconia ceramic is 10.0MPa m 1/2 or more, preferably 10.9-13MPa m 1/2.
- the Vickers hardness of the zirconia ceramics is 1170-180Hv.
- the average drop weight height is greater than or equal to 27.5 cm, and the average drop weight height is preferably 30.5-37 cm.
- the deformation ratio of the zirconia ceramic is 0%. That is, the defective rate is low in the tested samples.
- the zirconia ceramics can also have other improved mechanical properties at the same time.
- the second aspect of the present application provides a composition comprising: a zirconium oxide-containing component, aluminum oxide, zirconium silicate, and M x O y .
- the zirconia-containing component contains zirconia and 2-4 mol% of yttrium oxide. Based on the total composition, the content of zirconia-containing components is 84-99.3 wt%, the total content of alumina and zirconium silicate is 0.2-12 wt%, and the content of M x O y is 0.5-4 wt%.
- each component in the above composition may exist in powder form.
- the provided composition contains various oxides to obtain zirconia ceramics, and has high toughness and high impact resistance.
- the color of the zirconia ceramics can be white.
- the amount of each oxide used further preferably satisfies: based on the total composition, the content of the zirconia-containing component is 88-97wt%, and the total content of alumina and zirconium silicate is 2-9wt% , The content of M x O y is 1-3wt%.
- the total amount of each oxide in the composition is 100% by weight.
- zirconia ceramics can bring stabilization and toughening effects
- alumina has a reinforcing effect
- zirconium silicate can aggregate with alumina to produce heterogeneous particles (composite of zirconium silicate and alumina). Aggregate state) to increase the toughness and impact resistance of the composition.
- zirconia ceramics provided by the present application particularly contain various elements and phases in the above-mentioned specific contents, zirconia ceramics with improved toughness and impact resistance can be obtained synergistically.
- zirconia ceramics meeting the mechanical properties of the application cannot be provided.
- zirconia ceramics that meet the above requirements can also have a white color.
- the mass ratio of alumina to zirconium silicate in the composition is 1: (1-5).
- the zirconium silicate and alumina components are directly added to the composition, and the alumina and zirconium silicate are combined in a specific ratio to interact.
- the aggregate state formed in the zirconia ceramic can realize the improvement of the impact resistance of the zirconia ceramic, and the ceramic has good deformation resistance and high drop weight performance.
- the mass ratio of alumina to zirconium silicate is (1:1)-(1:2.25), and the mass ratio can be selected from (1:1.1), (1:1.2), (1:1.3), (1: 1.4), (1:1.5), (1:1.6), (1:1.7), (1:1.8), (1:1.9), (1:2.0), (1:2.1), (1:2.2) And (1:2.25), and a range consisting of the above-mentioned values arbitrarily.
- the composition is a composition for preparing the above-mentioned zirconia ceramic.
- the third aspect of the present application provides a method for preparing zirconia ceramics, including:
- the powder of each component in the composition of the present application is formed into a slurry.
- step (1) in step (1), forming a slurry includes: mixing the powder, dispersant and binder of each component in the composition to obtain the slurry material.
- the application does not limit the particle size of the powder of each component in the composition.
- a powder with a smaller particle size can be used as a raw material, and each powder, a dispersant, and a binder in the composition can be mixed to obtain a slurry. It is also possible to use a powder with a larger particle size as a raw material to wet-grind each powder, dispersant and binder in the composition, and reduce the particle size of the powder through wet grinding to obtain a slurry, which is beneficial Reduce the cost of preparing zirconia ceramics.
- a powder containing a zirconium oxide component contains yttrium oxide, with a median particle size of 0.3-0.6 ⁇ m and a specific surface area of 7-13 m 2 /g.
- the median particle size of the M x O y powder is 8-12 ⁇ m.
- M x O y is niobium oxide
- the median particle size of the niobium oxide powder is 8-12 ⁇ m.
- M x O y is tantalum oxide
- the median particle size of the tantalum oxide powder is 8-12 ⁇ m.
- the median particle size of zirconium silicate powder is 0.5-1 ⁇ m.
- the median particle size of the alumina powder is 0.15-0.6 ⁇ m.
- Step (1) realizes grinding various oxide powders as raw materials to reduce particle size and obtain slurry.
- the grinding process is wet grinding, and the specific process can include: mixing various oxide powders and water into a slurry, first ball milling and mixing, and then sand milling to make the median size of various oxide powders to nanometer level (Such as 250-500nm). More specifically, the various oxide powders are milled in a ball mill tank with water for 8-10 hours according to the content of the application, and then the dispersant and water are added to the sand mill for 8-10 hours, and finally an appropriate ratio is added The binder (such as PVA and/or polyethylene glycol 4000) is stirred for another 2-4h.
- the binder such as PVA and/or polyethylene glycol 4000
- the ball mill tank and sand mill use zirconia ceramic lining and zirconia grinding balls.
- the selected particle size of the zirconia grinding balls, the ratio of the grinding balls of different particle sizes, the weight ratio of the grinding balls to the powder, and the amount of water can be controlled to achieve the desired particle size of the oxide powder.
- the dispersant is selected from at least one of hypromellose, sodium carboxymethyl cellulose and triethanolamine.
- the binder is selected from polyvinyl alcohol and/or polyethylene glycol 4000, that is, the binder contains one or two of polyvinyl alcohol and polyethylene glycol 4000.
- the dispersant can promote the uniform mixing of the components in the powder.
- the binder is beneficial to the moldability of the powder.
- the binder is polyvinyl alcohol (PVA) and polyethylene glycol 4000 (PEG4000), and the molar ratio of polyvinyl alcohol and polyethylene glycol 4000 is 1:(1-2), preferably 1:1.
- both the dispersant and the binder are commercially available.
- the added amount of the dispersant is 0.005-0.5wt% of the total powder of each component in the composition, preferably 0.01-0.1wt%.
- the amount of the binder added is 0.5 to 5% by weight of the total powder of each component in the composition, preferably 2 to 5% by weight.
- the solid content of the slurry is 20-60 wt%, preferably 25-55 wt%. Can have better abrasive effect.
- step (2) various drying methods can be used in step (2), for example, spray drying can be used to form a spherical powder with strong fluidity, wherein the spherical powder with strong fluidity refers to: powder
- the spherical powder with strong fluidity refers to: powder
- the powder is solid, that is, the powder is dense.
- the inlet air temperature of spray drying is 220-280°C
- the outlet air temperature is 100-120°C
- the centrifugal speed is 10-20 revolutions per second.
- step (3) can be used to prepare the composite zirconia powder into ceramics.
- the composite zirconia powder can be formed first and then sintered. Molding can adopt dry pressing molding, isostatic pressing molding, injection molding, hot die casting molding and other molding methods. Dry press molding is preferred. A press with a tonnage of 180-220 tons can be used for molding with a hydraulic pressure of 6-10MPa. By using different molds, the molded ceramics can have different shapes, such as a mobile phone back cover after molding. shape. Sintering can be carried out in air. Alternatively, sintering can be divided into two steps, first sintering in air, and then re-sintering in a reducing atmosphere.
- the sintering procedure includes: heating from room temperature to 600°C over 400min and holding for 2h, from 600°C over 300min to 1150°C and holding for 2h, from 1150°C over 150min to 1370-1480°C and holding for 1-2h, After 150 minutes, the temperature was lowered to 900°C, and finally cooled to room temperature.
- the sintering procedure can also include: heating from room temperature to 600°C and holding for 2h in 400min, heating from 600°C to 1150°C and holding for 2h in 300min, heating from 1150°C to 1300°C in 150min and holding holding for 2h, and holding at 1300°C for 50min Warm up to 1380-1480°C and keep for 1-2h, then cool down to 900°C after 150min, and finally cool to room temperature naturally.
- the ceramic obtained by sintering further includes flat grinding and polishing, and cutting into a final product using a laser.
- the final product can have a specific shape and a high degree of smoothness after being ground, polished and cut, and can be used as an electronic product shell or decoration.
- the fourth aspect of the present application provides a ceramic piece, which contains the aforementioned zirconia ceramic.
- the fifth aspect of the present application provides an application of the zirconia ceramic provided in the present application in the preparation of electronic product housings or decorations.
- Fracture toughness K ic Hardness tester indentation method (diamond indenter, force 10kg, pressure test time 15s).
- Hardness Hv Hardness tester and indentation method (diamond indenter, force 10kg, pressure test time 15s).
- Falling weight impact use a falling weight impact tester (manufacturer CKSI, model E602SS), place the sample on the platform, use a 60g weight drop hammer to reposition the sample, starting from a height of 5cm, if it does not crack, follow the steps of 5cm each time Increase the height until the sample shows visible cracks and stop, and record the height value.
- Deformation ratio burn out 20 ceramic samples, of which the flatness is greater than 0.4mm as bad.
- the percentage of the number of defective samples in 20 samples is the deformation ratio. The lower the value, the better the yield rate in the sample.
- XRD test Use X-ray diffractometer Smartlab (3kW) to test the type and content of phases.
- XRF detection Use energy dispersive X-ray fluorescence spectrometer EDX-7000 to test the element content of polished samples.
- composition and dosage of the raw materials and the prepared samples are shown in Table 1.
- Raw materials 200g composite powder, which contains 2.5wt% niobium pentoxide (Nb 2 O 5 ), 2wt% alumina (Al 2 O 3 ), 3wt% zirconium silicate (ZrSiO 4 ), and the rest contains 3 mol% yttrium oxide Of zirconia powder.
- the mass ratio of alumina: zirconium silicate is 1:1.5.
- the raw materials were ball milled with water in a ball mill for 8 hours, and then 0.02wt% sodium carboxymethyl cellulose of the composite powder and water were added to the sand mill for 10 hours, and finally 4wt% of the binder of the composite powder (mole) was added to the sand mill.
- PEG4000 and PVA with a ratio of 1:1 were stirred for 0.5h to form a spray slurry with a solid content of 25wt%.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM.
- the photo is shown in Figure 1.
- the circle contains heterogeneous particles, and the heterogeneous particles are aggregates of zirconium silicate and alumina. It can be seen from the figure that after adding alumina and zirconium silicate, the sintered ceramic presents heterogeneous particles shown in the circle, that is, there is an aggregate state of zirconium silicate and alumina in the ceramic.
- Raw material 200g composite powder, which contains 2.5wt% of niobium pentoxide (Nb 2 O 5 ), 4.5wt% of alumina (Al 2 O 3 ), 4.5wt% of zirconium silicate (ZrSiO 4 ), and the rest contains 2mol% Zirconium oxide powder of yttrium oxide. Among them, the mass ratio of alumina: zirconium silicate is 1:1.
- the raw materials are ball milled with water in a ball mill for 8 hours, then 0.01wt% of triethanolamine of composite powder and water are added to the sand mill for 10 hours, and finally 5wt% of binder of composite powder is added (the molar ratio is 1: 1 PEG4000 and PVA) were stirred for 0.5h to form a spray slurry with a solid content of 55wt%.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the formed powder is heated from room temperature to 600°C for 400min and kept for 2h, from 600°C to 1150°C for 300min and kept for 2h, from 1150°C to 1370°C for 150min and kept for 2h, and then cooled to 900°C for 150min Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to Fig. 1 was obtained.
- Raw material 200g composite powder, which contains 2.5wt% of niobium pentoxide (Nb 2 O 5 ), 1wt% of alumina (Al 2 O 3 ), 1.5wt% of zirconium silicate (ZrSiO 4 ), and the rest contains 4 mol% of oxide Zirconium oxide powder of yttrium.
- the mass ratio of alumina: zirconium silicate is 1:1.5.
- the raw materials were ball milled with water in a ball mill for 8 hours, then 0.1wt% of powdered sodium hydroxymethyl cellulose and water were added to the sand mill for 10 hours, and finally 2wt% of powder was added to the binder (mole PEG4000 and PVA with a ratio of 1:1 were stirred for 0.5h to form a spray slurry with a solid content of 40 wt%.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the formed powder is heated from room temperature to 600°C for 400min and kept for 2h, from 600°C to 1150°C for 300min and kept for 2h, from 1150°C to 1370°C for 150min and kept for 2h, and then cooled to 900°C for 150min Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to that in Fig. 1 was obtained.
- There are heterogeneous particles in the ceramic that is, there are aggregates of zirconium silicate and alumina in the ceramic.
- Raw material 200g of composite powder, which contains 2wt% of niobium pentoxide (Nb 2 O 5 ), 2wt% of alumina (Al 2 O 3 ), 3wt% of zirconium silicate (ZrSiO 4 ), and the remainder contains 3 mol% of yttrium oxide Zirconia powder.
- the mass ratio of alumina: zirconium silicate is 1:1.5.
- the raw materials are ball milled with water in a ball mill for 8 hours, and then 0.02wt% hypromellose (dispersant) of the powder is added to the sand mill and sand milled with water for 10 hours, and finally 4wt% of the powder is added for bonding (PEG4000 and PVA with a molar ratio of 1:1) were stirred for 0.5h to form a spray slurry with a solid content of 25% by weight.
- 0.02wt% hypromellose (dispersant) of the powder is added to the sand mill and sand milled with water for 10 hours, and finally 4wt% of the powder is added for bonding (PEG4000 and PVA with a molar ratio of 1:1) were stirred for 0.5h to form a spray slurry with a solid content of 25% by weight.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to Fig. 1 was obtained.
- Raw material 200g of composite powder, which contains 3wt% of niobium pentoxide (Nb 2 O 5 ), 2wt% of alumina (Al 2 O 3 ), 3wt% of zirconium silicate (ZrSiO 4 ), and the remainder contains 3 mol% of yttrium oxide Zirconia powder.
- the mass ratio of alumina: zirconium silicate is 1:1.5.
- the raw materials are ball milled with water in a ball mill for 8 hours, and then 0.02wt% hypromellose (dispersant) of the powder is added to the sand mill and sand milled with water for 10 hours, and finally 4wt% of the powder is added for bonding (PEG4000 and PVA with a molar ratio of 1:1) were stirred for 0.5h to form a spray slurry with a solid content of 25% by weight.
- 0.02wt% hypromellose (dispersant) of the powder is added to the sand mill and sand milled with water for 10 hours, and finally 4wt% of the powder is added for bonding (PEG4000 and PVA with a molar ratio of 1:1) were stirred for 0.5h to form a spray slurry with a solid content of 25% by weight.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to Fig. 1 was obtained.
- Raw material 200g of composite powder, which contains 2.5wt% of niobium pentoxide (Nb 2 O 5 ), 3wt% of alumina (Al 2 O 3 ), 3wt% of zirconium silicate (ZrSiO 4 ), and the rest contains 3 mol% of yttrium oxide Of zirconia powder.
- the mass ratio of alumina: zirconium silicate is 1:1.
- the raw materials are ball milled with water in a ball mill for 8 hours, and then 0.02wt% hypromellose (dispersant) of the powder is added to the sand mill and sand milled with water for 10 hours, and finally 4wt% of the powder is added for bonding (PEG4000 and PVA with a molar ratio of 1:1) were stirred for 0.5h to form a spray slurry with a solid content of 25% by weight.
- 0.02wt% hypromellose (dispersant) of the powder is added to the sand mill and sand milled with water for 10 hours, and finally 4wt% of the powder is added for bonding (PEG4000 and PVA with a molar ratio of 1:1) were stirred for 0.5h to form a spray slurry with a solid content of 25% by weight.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to Fig. 1 was obtained.
- Raw material 200g composite powder, which contains 2.5wt% of niobium pentoxide (Nb 2 O 5 ), 2wt% of alumina (Al 2 O 3 ), 4.5wt% of zirconium silicate (ZrSiO 4 ), and the rest contains 3 mol% of oxide Zirconium oxide powder of yttrium.
- the mass ratio of alumina: zirconium silicate is 1:2.25.
- the raw materials are ball milled with water in a ball mill for 8 hours, and then 0.02wt% hypromellose (dispersant) of the powder is added to the sand mill and sand milled with water for 10 hours, and finally 4wt% of the powder is added for bonding (PEG4000 and PVA with a molar ratio of 1:1) were stirred for 0.5h to form a spray slurry with a solid content of 25% by weight.
- 0.02wt% hypromellose (dispersant) of the powder is added to the sand mill and sand milled with water for 10 hours, and finally 4wt% of the powder is added for bonding (PEG4000 and PVA with a molar ratio of 1:1) were stirred for 0.5h to form a spray slurry with a solid content of 25% by weight.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to Fig. 1 was obtained.
- Raw material 200g composite powder, which contains 2.5wt% tantalum pentoxide (Ta 2 O 5 ), 2wt% alumina (Al 2 O 3 ), 3wt% zirconium silicate (ZrSiO 4 ), and the rest contains 3 mol% yttrium oxide Of zirconia powder.
- the mass ratio of alumina: zirconium silicate is 1:1.5.
- the raw materials were ball milled with water in a ball mill for 8 hours, and then 0.02wt% sodium carboxymethyl cellulose of the composite powder and water were added to the sand mill for 10 hours, and finally 4wt% of the binder of the composite powder (mole) was added to the sand mill.
- PEG4000 and PVA with a ratio of 1:1 were stirred for 0.5h to form a spray slurry with a solid content of 25wt%.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconium oxide is a solid solution formed by yttrium oxide, tantalum oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to Fig. 1 was obtained.
- Raw material 200g composite powder, which contains 2.5wt% niobium pentoxide, 4wt% alumina, 6wt% zirconium silicate, and the rest is zirconia powder containing 3mol% yttrium oxide. Among them, the mass ratio of alumina: zirconium silicate is 1:1.5.
- the raw materials were ball milled with water in a ball mill for 8 hours, and then 0.02wt% sodium carboxymethyl cellulose of the composite powder and water were added to the sand mill for 10 hours, and finally 4wt% of the binder of the composite powder (mole) was added to the sand mill.
- PEG4000 and PVA with a ratio of 1:1 were stirred for 0.5h to form a spray slurry with a solid content of 25wt%.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to Fig. 1 was obtained.
- Raw material 200g composite powder, which contains 2.5wt% niobium pentoxide, 3wt% alumina, 2wt% zirconium silicate, and the rest is zirconia powder containing 3mol% yttrium oxide. Among them, the mass ratio of alumina: zirconium silicate is 1:0.67.
- the raw materials were ball milled with water in a ball mill for 8 hours, and then 0.02wt% sodium carboxymethyl cellulose of the composite powder and water were added to the sand mill for 10 hours, and finally 4wt% of the binder of the composite powder (mole) was added to the sand mill.
- PEG4000 and PVA with a ratio of 1:1 were stirred for 0.5h to form a spray slurry with a solid content of 25wt%.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to Fig. 1 was obtained.
- Raw material 200g composite powder, which contains 2.5wt% niobium pentoxide, 1wt% alumina, 6wt% zirconium silicate, and the rest is zirconia powder containing 3mol% yttrium oxide. Among them, the mass ratio of alumina: zirconium silicate is 1:6.
- the raw materials were ball milled with water in a ball mill for 8 hours, and then 0.02wt% sodium carboxymethyl cellulose of the composite powder and water were added to the sand mill for 10 hours, and finally 4wt% of the binder of the composite powder (mole) was added to the sand mill.
- PEG4000 and PVA with a ratio of 1:1 were stirred for 0.5h to form a spray slurry with a solid content of 25wt%.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the formed powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to Fig. 1 was obtained.
- Raw material 200g composite powder, which contains 4wt% niobium pentoxide, 2wt% alumina, 3wt% zirconium silicate, and the rest is zirconia powder containing 3mol% yttrium oxide. Among them, the mass ratio of alumina: zirconium silicate is 1:1.5.
- the raw materials were ball milled with water in a ball mill for 8 hours, and then 0.02wt% sodium carboxymethyl cellulose of the composite powder and water were added to the sand mill for 10 hours, and finally 4wt% of the binder of the composite powder (mole) was added to the sand mill.
- PEG4000 and PVA with a ratio of 1:1 were stirred for 0.5h to form a spray slurry with a solid content of 25wt%.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to Fig. 1 was obtained.
- Raw material 200g of composite powder, which contains 2.5wt% of niobium pentoxide, 6wt% of alumina, 6wt% of zirconium silicate, and the rest is zirconia powder containing 3mol% of yttrium oxide. Among them, the mass ratio of alumina: zirconium silicate is 1:1.
- the raw materials were ball milled with water in a ball mill for 8 hours, and then 0.02wt% sodium carboxymethyl cellulose of the composite powder and water were added to the sand mill for 10 hours, and finally 4wt% of the binder of the composite powder (mole) was added to the sand mill.
- PEG4000 and PVA with a ratio of 1:1 were stirred for 0.5h to form a spray slurry with a solid content of 25wt%.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the prepared sample was observed by SEM, and an image similar to Fig. 1 was obtained.
- Raw material 200 g of composite powder, of which alumina (Al 2 O 3 ) is 0.25 wt%, and the remainder is zirconia powder containing 3 mol% of yttria.
- the raw materials are ball milled with water in a ball milling tank for 8 hours, then 0.02wt% hypromellose powder and water are added to the sand mill for 10 hours, and finally 4wt% binder of the powder is added (molar ratio PEG4000 and PVA (1:1) were stirred for 0.5h to form a slurry for spraying.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide and zirconia.
- Raw material 200g composite powder, which contains 2.5wt% of niobium pentoxide, 0.25wt% of aluminum oxide (Al 2 O 3 ), and the rest is zirconia powder containing 3 mol% of yttrium oxide.
- the raw materials are ball milled with water in a ball milling tank for 8 hours, then 0.02wt% hypromellose powder and water are added to the sand mill for 10 hours, and finally 4wt% binder of the powder is added (molar ratio PEG4000 and PVA (1:1) were stirred for 0.5h to form a slurry for spraying.
- the slurry is sent to the spray tower for spray drying (the inlet air temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal rotation speed is 15 revolutions per second) to form a spherical powder with strong fluidity for dry pressing, and then dry pressing and forming (The 200-ton press uses 8MPa oil pressure).
- the molded powder is heated from room temperature to 600°C for 400 minutes and kept for 2 hours, from 600°C to 1150°C for 300 minutes and kept for 2 hours, from 1150°C to 1410°C for 150 minutes and kept for 2 hours, and then cooled to 900°C for 150 minutes Finally, the process of natural cooling to room temperature is sintered in air.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the difference is that there is no zirconium silicate, and the preparation of zirconium oxide ceramics is carried out.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- Example 1 According to the method of Example 1, the difference is that there is no alumina and the preparation of zirconia ceramics is carried out.
- the size is the shape and size of the back cover of the mobile phone, 150*75*0.6mm.
- tetragonal zirconia is a solid solution formed by yttrium oxide, niobium oxide and zirconium oxide.
- the zirconia ceramics provided in the present application can have significantly improved impact resistance while simultaneously having suitable toughness. And can have suitable hardness.
- Example 10 the mass ratio of alumina to zirconium silicate is not in the range of 1:(1-5), and the impact resistance of ceramics is poor.
- Examples 1-13 the worst impact resistance is in Example 11.
- the average drop weight height of the zirconium oxide ceramics in 1 is 27.5 cm, but it is still higher than the average drop weight height in Comparative Examples 1-4, indicating that the impact resistance of the zirconia ceramics of the present application is better than that of the comparative examples.
- the toughness of the zirconia ceramics of the present application can be as high as 13 MPa m 1/2 .
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Signal Processing (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
Claims (20)
- 一种氧化锆陶瓷,所述氧化锆陶瓷以元素计包含:60.5-70.5wt%的Zr、2.5-5.45wt%的Y、0.05-2.65wt%的Al、0.015-1.07wt%的Si,以及0.34-2.8wt%的M,所述M包括Nb和Ta的至少之一;且所述氧化锆陶瓷的物相组成包含:四方相氧化锆、氧化铝和硅酸锆,氧化铝和硅酸锆的含量之和为0.2-12wt%,所述四方相氧化锆的含量为84-99.3wt%;所述四方相氧化锆包括氧化钇、M xO y与氧化锆形成的固溶体;所述x满足1≤x≤3,所述y满足3≤y≤6。
- 根据权利要求1所述的氧化锆陶瓷,所述氧化锆陶瓷包含:63-68.75wt%的Zr、3.35-4.7wt%的Y、0.53-1.58wt%的Al、0.15-0.92wt%的Si,以及0.68-2.1wt%的M。
- 根据权利要求1或2所述的氧化锆陶瓷,所述氧化锆陶瓷的物相组成包含:四方相氧化锆、氧化铝和硅酸锆,其中所述氧化铝和硅酸锆的含量之和为2-9wt%,所述四方相氧化锆的含量为88-97wt%。
- 根据权利要求1-3中任意一项所述的氧化锆陶瓷,所述氧化铝和硅酸锆的质量比为1:(1-5)。
- 一种氧化锆陶瓷,所述氧化锆陶瓷的物相组成包含:四方相氧化锆、氧化铝和硅酸锆,氧化铝和硅酸锆的含量之和为0.2-12wt%,所述四方相氧化锆的含量为84-99.3wt%;所述四方相氧化锆包括氧化钇、M xO y与氧化锆形成的固溶体,所述氧化锆陶瓷中以元素计Y的含量为2.5-5.45wt%,M的含量为0.34-2.8wt%;所述M包括Nb和Ta的至少之一,且所述x满足1≤x≤3,所述y满足3≤y≤6。
- 一种组合物,该组合物包含:含氧化锆组分、氧化铝、硅酸锆,以及M xO y;其中,以所述含氧化锆组分的总量为基准,所述含氧化锆组分中含有氧化锆以及2-4mol%的氧化钇;以所述组合物的总量为基准,含氧化锆组分的含量为84-99.3wt%,氧化铝和硅酸锆的总含量为0.2-12wt%,M xO y的含量为0.5-4wt%。
- 根据权利要求6所述的组合物,其中,以所述组合物的总量为基准,含氧化锆组分的含量为88-97wt%,氧化铝和硅酸锆的总含量为2-9wt%,M xO y的含量为1-3wt%。
- 根据权利要求6或7所述的组合物,所述组合物中,氧化铝与硅酸锆的质量比为(1:1)-(1:5)。
- 一种制备氧化锆陶瓷的方法,包括:(1)将权利要求6-8中任意一项所述的组合物中各组分的粉体形成浆料;(2)将所述浆料进行干燥,得到复合氧化锆粉体;(3)将所述复合氧化锆粉体进行成型和烧结,得到氧化锆陶瓷。
- 根据权利要求9所述的方法,步骤(1)中,形成浆料包括:将所述组合物中各组分的粉体、分散剂和粘结剂进行混合,得到所述浆料。
- 根据权利要求10所述的方法,步骤(1)中,所述分散剂选自羟丙甲纤维素、羧甲基纤维素钠和三乙醇胺中的至少一种;所述粘结剂选自聚乙烯醇和聚乙二醇4000的至少之一。
- 根据权利要求11所述的方法,步骤(1)中,所述分散剂的加入量为所述组合物中各组分的粉体总量的0.005-0.5wt%。
- 根据权利要求12所述的方法,步骤(1)中,所述分散剂的加入量为所述组合物中各组分的粉体总量的0.01-0.1wt%。
- 根据权利要求11所述的方法,步骤(1)中,所述粘结剂的加入量为所述组合物中各组分的粉体总量的0.5-5wt%。
- 根据权利要求9所述的方法,步骤(1)中,所述浆料的固含量为20-60wt%。
- 根据权利要求9所述的方法,步骤(3)中,所述烧结在空气中进行。
- 根据权利要求9所述的方法,步骤(3)中,所述烧结分为两步,先空气中烧结,再在还原气氛中复烧结。
- 根据权利要求9-17任一项所述的方法,所述烧结的程序包括:从室温经400min升温至600℃并保温2h,从600℃经300min升温至1150℃并保温2h,从1150℃经150min升温至1370-1480℃并保温1-2h,然后经过150min降温至900℃,最后自然冷却至室温。
- 根据权利要求9-17任一项所述的方法,所述烧结的程序包括:从室温经400min升温至600℃并保温2h,从600℃经300min升温至1150℃并保温2h,从1150℃经150min升温至1300℃并保温2h,从1300℃经50min升温至1380-1480℃并保温1-2h,然后经过150min降温至900℃,最后自然冷却至室温。
- 一种权利要求1-5中任意一项所述的氧化锆陶瓷在制备电子产品外壳或装饰品中的应用。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/641,937 US20220356121A1 (en) | 2019-09-10 | 2020-09-10 | Zirconia ceramic, method for preparing zirconia ceramic, use thereof, and composition including the same |
KR1020227011740A KR20220062050A (ko) | 2019-09-10 | 2020-09-10 | 지르코니아 세라믹, 지르코니아 세라믹을 제조하는 방법, 및 그의 적용 및 조성물 |
JP2022515674A JP7357149B2 (ja) | 2019-09-10 | 2020-09-10 | ジルコニアセラミック、ジルコニアセラミックの製造方法、その使用、及び、それを含む組成物 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910851118.8 | 2019-09-10 | ||
CN201910851118.8A CN112552041B (zh) | 2019-09-10 | 2019-09-10 | 制备氧化锆陶瓷的组合物、氧化锆陶瓷及其制备方法和应用 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021047574A1 true WO2021047574A1 (zh) | 2021-03-18 |
Family
ID=74867264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2020/114398 WO2021047574A1 (zh) | 2019-09-10 | 2020-09-10 | 氧化锆陶瓷、制备氧化锆陶瓷的方法及其应用和组合物 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220356121A1 (zh) |
JP (1) | JP7357149B2 (zh) |
KR (1) | KR20220062050A (zh) |
CN (1) | CN112552041B (zh) |
WO (1) | WO2021047574A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114835488A (zh) * | 2022-04-22 | 2022-08-02 | 昆明理工大学 | 一种无相变的氧化锆基陶瓷材料及其制备方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113929455B (zh) * | 2021-11-25 | 2022-10-21 | 内蒙古科技大学 | 一种黑色氧化锆陶瓷及其制备方法 |
CN115650723B (zh) * | 2022-11-09 | 2023-09-29 | 湖南泰鑫瓷业有限公司 | 一种氧化锆陶瓷棒的制备方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101638317A (zh) * | 2008-08-02 | 2010-02-03 | 比亚迪股份有限公司 | 一种全稳定氧化锆陶瓷材料及其制备方法 |
EP2094620B1 (fr) * | 2006-12-21 | 2013-03-06 | Saint-Gobain Centre de Recherches et d'Etudes Européen | Produit fritte dope a base de zircon et de zircone |
CN105565806A (zh) * | 2014-12-08 | 2016-05-11 | 比亚迪股份有限公司 | 一种陶瓷及其制备方法 |
CN107148407A (zh) * | 2014-10-31 | 2017-09-08 | 可乐丽则武齿科株式会社 | 氧化锆组合物、氧化锆预烧体和氧化锆烧结体、以及齿科用制品 |
CN107759218A (zh) * | 2017-12-11 | 2018-03-06 | 内蒙古科技大学 | 一种氧化钇稳定氧化锆陶瓷及其制备方法 |
CN110054485A (zh) * | 2019-05-17 | 2019-07-26 | 淄博启明星新材料股份有限公司 | 低成本氧化锆增韧氧化铝耐磨陶瓷衬板的制备方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1281340C (en) * | 1986-09-03 | 1991-03-12 | Junichi Morishita | Zirconia ceramics and a process for production thereof |
US5047373A (en) * | 1989-03-24 | 1991-09-10 | Corning Incorporated | Ceramic materials exhibiting pseudo-plasticity at room temperature |
KR100321293B1 (ko) * | 1999-05-07 | 2002-03-18 | 박호군 | 정방정 지르코니아 분말, 그를 이용한 정방정 지르코니아/알루미나 복합체 |
JP5387189B2 (ja) | 2009-07-14 | 2014-01-15 | 東ソー株式会社 | 灰色ジルコニア焼結体及びその製造方法 |
EP3374329B1 (de) | 2015-11-10 | 2020-02-12 | CeramTec GmbH | Thermoschockresistente verbundwerkstoffe |
CN106810244B (zh) | 2015-11-30 | 2020-03-31 | 比亚迪股份有限公司 | 锆基复合陶瓷材料及其制备方法与外壳或装饰品 |
CN108329025A (zh) * | 2018-03-16 | 2018-07-27 | 厦门胜中流体控制技术有限公司 | 一种抗老化氧化锆陶瓷及其原料的制备方法 |
CN108558395A (zh) * | 2018-05-28 | 2018-09-21 | 潮州三环(集团)股份有限公司 | 一种氧化锆陶瓷材料组合物及其应用 |
-
2019
- 2019-09-10 CN CN201910851118.8A patent/CN112552041B/zh active Active
-
2020
- 2020-09-10 WO PCT/CN2020/114398 patent/WO2021047574A1/zh active Application Filing
- 2020-09-10 KR KR1020227011740A patent/KR20220062050A/ko unknown
- 2020-09-10 JP JP2022515674A patent/JP7357149B2/ja active Active
- 2020-09-10 US US17/641,937 patent/US20220356121A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2094620B1 (fr) * | 2006-12-21 | 2013-03-06 | Saint-Gobain Centre de Recherches et d'Etudes Européen | Produit fritte dope a base de zircon et de zircone |
CN101638317A (zh) * | 2008-08-02 | 2010-02-03 | 比亚迪股份有限公司 | 一种全稳定氧化锆陶瓷材料及其制备方法 |
CN107148407A (zh) * | 2014-10-31 | 2017-09-08 | 可乐丽则武齿科株式会社 | 氧化锆组合物、氧化锆预烧体和氧化锆烧结体、以及齿科用制品 |
CN105565806A (zh) * | 2014-12-08 | 2016-05-11 | 比亚迪股份有限公司 | 一种陶瓷及其制备方法 |
CN107759218A (zh) * | 2017-12-11 | 2018-03-06 | 内蒙古科技大学 | 一种氧化钇稳定氧化锆陶瓷及其制备方法 |
CN110054485A (zh) * | 2019-05-17 | 2019-07-26 | 淄博启明星新材料股份有限公司 | 低成本氧化锆增韧氧化铝耐磨陶瓷衬板的制备方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114835488A (zh) * | 2022-04-22 | 2022-08-02 | 昆明理工大学 | 一种无相变的氧化锆基陶瓷材料及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
JP7357149B2 (ja) | 2023-10-05 |
CN112552041B (zh) | 2021-11-12 |
KR20220062050A (ko) | 2022-05-13 |
US20220356121A1 (en) | 2022-11-10 |
CN112552041A (zh) | 2021-03-26 |
JP2022547212A (ja) | 2022-11-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2021047574A1 (zh) | 氧化锆陶瓷、制备氧化锆陶瓷的方法及其应用和组合物 | |
JP2011500502A (ja) | ナノ助剤を用いた低クリープ性のジルコン材料およびその製造方法 | |
CN108546093B (zh) | 一种氧化铝短纤增强氧化镁基坩埚及其制备方法 | |
CN101798216A (zh) | 添加硼化钛的氧化锆基纳米陶瓷工模具材料及其制备方法 | |
CN112537956B (zh) | 黑色氧化锆陶瓷及其制备方法和应用 | |
CN112062557B (zh) | 氧化锆陶瓷及其制备方法和应用 | |
CN112537957B (zh) | 氧化锆陶瓷及其制备方法和应用 | |
CN104725059A (zh) | 一种氧化锆均分散活性尖晶石粉及其制备方法 | |
AU2016415075B9 (en) | ZrO2-Al2O3 Multiphase Ceramic Particle for Wear-Resistance Application, Preparation Method Therefor and Use Thereof | |
CN113929452B (zh) | 氧化锆复合陶瓷及其制备方法、壳体组件和电子设备 | |
CN107881357A (zh) | 一种氧化锆基金属陶瓷材料的制备方法 | |
CN113004033B (zh) | 氧化锆陶瓷及其制备方法和应用 | |
JP5403851B2 (ja) | 珪酸ジルコニウム焼結体の製造方法 | |
JPH04209761A (ja) | ジルコニア磁器及びその製造方法 | |
CN113443912B (zh) | 一种氧化锆陶瓷及其制备方法和应用 | |
JPWO2019131644A1 (ja) | アルミナ焼結体の前駆体、アルミナ焼結体の製造方法、砥粒の製造方法及びアルミナ焼結体 | |
CN116535206A (zh) | 氧化锆陶瓷及其制备方法和电子产品壳体 | |
CN113443911B (zh) | 一种氧化锆陶瓷及其制备方法和应用 | |
CN113929451B (zh) | 氧化锆复合陶瓷及其制备方法、壳体组件和电子设备 | |
TWI747694B (zh) | 以水系膠鑄成型製作氧化鋯陶瓷之方法 | |
CN112552042A (zh) | 一种氧化锆陶瓷及其制备方法和应用 | |
JPH10194823A (ja) | MgO複合セラミックス及びその製造方法 | |
CN116535207A (zh) | 制备氧化锆陶瓷的组合物、氧化锆陶瓷及其制备方法和电子产品壳体 | |
CN118063209A (zh) | 锆基复合陶瓷材料及其制备方法和陶瓷结构件 | |
CN117735982A (zh) | 氧化锆陶瓷及制备方法与电子产品壳体 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20863967 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022515674 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20227011740 Country of ref document: KR Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 20863967 Country of ref document: EP Kind code of ref document: A1 |