CN104326743A - Composite zirconium oxide ceramic for valve - Google Patents

Composite zirconium oxide ceramic for valve Download PDF

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Publication number
CN104326743A
CN104326743A CN201410531690.3A CN201410531690A CN104326743A CN 104326743 A CN104326743 A CN 104326743A CN 201410531690 A CN201410531690 A CN 201410531690A CN 104326743 A CN104326743 A CN 104326743A
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CN
China
Prior art keywords
valve
zirconium oxide
oxide ceramic
weight
zirconia
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410531690.3A
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Chinese (zh)
Inventor
李兆萍
初林杰
冯一桀
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YANTAI KINGWAY SCIENCE & TECHNOLOGY Co Ltd
Original Assignee
YANTAI KINGWAY SCIENCE & TECHNOLOGY Co Ltd
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Publication date
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Priority to CN201410531690.3A priority Critical patent/CN104326743A/en
Publication of CN104326743A publication Critical patent/CN104326743A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides 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
    • C04B2235/3217—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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)

Abstract

The invention discloses a composite zirconium oxide ceramic for a valve; the composite zirconium oxide ceramic comprises 78-90% by weight of zirconia, 4-5% by weight of yttria, 2-3% by weight of magnesium oxide, and 4-16% by weight of alumina; the composite zirconium oxide ceramic is applied in the valve, is used as an inner lining material of the valve, and blocks the direct contact of a medium with metals; with utilization of excellent zirconia ceramic properties of good wear resistance, high temperature resistance, corrosion resistance, heat shock resistance and the like, corrosion resistance, wear resistance and other properties of the valve are greatly improved, the service life is long, and the stability is high.

Description

A kind of valve combined oxidation zircon ceramic
Technical field
The invention belongs to technical field of composite materials, especially relate to a kind of valve combined oxidation zircon ceramic.
Background technology
Traditional metallic substance non-refractory, easy to wear, easily get rusty, replaced by a large amount of zirconia ceramics, such as valve, cutting tool, mill Jie, all kinds of nozzles etc.Zirconia ceramics is at electronics, electrical equipment, machinery, space flight, chemical industry, many high, precision and frontier fields such as weaving widely use, because it has metal, the over-all properties that the high strength of plastic or other material, high temperature resistant, wear-resistant, high temperature resistant, wear-resistant, corrosion-resistant, high insulation etc. are excellent, from now on along with the industrialization of zirconia ceramics material, use field will be expanded further.Conventional valves is metallic substance, due to the restriction being subject to the erosion resistance of metallic substance own, wear no resistance, the reliability of valve and work-ing life is greatly affected.Such as be applied to the metal valve of petroleum industry, owing to affecting by hydrogen sulfide, carbonic acid gas and some organic acids in the media such as oil, Sweet natural gas and oil-reservoir water, very large to the destructive force on its surface, will to lose the job in short period of time ability, and in the valve that zirconia ceramics is effectively applied, the premium propertiess such as high intensity and high tenacity, wear resistance are good, corrosion-and high-temp-resistant that utilize zirconia ceramics to have, greatly reduce the maintain and replace number of times of valve, improve the security of whole system operation, stability, save equipment repair expense.
Usually add dissimilar stablizer and make dissimilar zirconia ceramics, as PSZ (partially stabilized zirconia PSZ), when stablizer is MgO, Y 2o 3time, be expressed as Mg-PSZ, Y-PSZ etc.By metastable t-ZrO 2the tetragonal zircite of composition is referred to as tetragonal zirconia polycrystal pottery (tetragonal zirconia polycrysta TZP).When the stablizer added is Y 2o 3, CeO 2, then Y-TZP, Ce-TZP etc. are expressed as.
The molding mode of zirconia ceramics has that dry-pressing formed, isostatic pressing, injection forming, hot die-casting molding, flow casting molding, injection molding, plastic extrusion are shaping, colloidal state coagulation forming etc., and the adoptable sintering method of zirconia ceramics has pressureless sintering, hot pressed sintering and reactive hot press sintering, HIP sintering, microwave sintering, ultra-high pressure sintering, discharge plasma sintering, the molded sintering of add in-place etc. usually.
Summary of the invention
The object of the invention is to the deficiency of improvement prior art and a kind of combined oxidation zircon ceramic be applied in valve is provided, as the inner lining material of valve, block medium to contact with the direct of metal, utilize the premium propertiess such as the wear resistance of zirconia ceramics is good, high temperature resistant, corrosion-resistant, heat shock resistance, the performance such as corrosion-resistant and wear-resistant of valve is improved greatly, and long service life, stability are high.
The object of the present invention is achieved like this, a kind of valve combined oxidation zircon ceramic, be characterized in by weight percent be the zirconium white of 78-90%, the yttrium oxide of 4-5%, the magnesium oxide of 2-3%, the aluminum oxide of 4%-16% form.
In order to realize object of the present invention further, can be described zirconium white be purity 99.95%, granularity 0.4-0.7 μm.
Compared with the prior art the present invention has following distinguishing feature and positively effect: the present invention is on the bases such as zirconium white, yttrium oxide, magnesium oxide, increase aluminum oxide, above-mentioned oxide compound is mixed in proportion, novel compound zirconia is prepared into out through operations such as ball milling, mist projection granulating, isostatic pressing, pressureless sinterings, its thermal-shock resistance is significantly improved, and its density is at 5.68g/cm 3above, Vickers' hardness (HV) is more than 1000, compound zirconia ceramic member of the present invention is put into the sintering oven of 150 DEG C, after insulation for some time, put into the water of 20 DEG C, look at or without cracked phenomenon, if produce without any defect, then repeated test, till test 10 times, NEW TYPE OF COMPOSITE zirconia ceramics is after 150 DEG C of tests 10 times, produce without any defect, and Y-TZP, the partial stabilization zirconium oxide ceramics such as Ce-TZP are after 150 DEG C of tests 5 to 6 times, all there is crackle, fall the defects such as fragment, compound zirconia of the present invention is continued 170 DEG C of tests, just there is the defects such as crackle when the 6th test, illustrate that the thermal shock resistance of NEW TYPE OF COMPOSITE zirconia ceramics of the present invention is significantly improved, the valve adopting zirconia ceramics of the present invention to make, be processed into bore DN50 valve and use ball core, test its moment of torsion, its moment of torsion reaches more than 300N.m after tested.
Embodiment
Embodiment 1, a kind of valve combined oxidation zircon ceramic, be zirconium white, the yttrium oxide of 4-5%, the magnesium oxide of 2-3%, the aluminum oxide of 4%-16% of 78-90% by weight percent, the zirconia powder used is purity 99.95%, granularity 0.4-0.7 μm, above-mentioned oxide compound is mixed in proportion, draw through operation preparations such as ball milling, mist projection granulating, hydrostatic profile, pressureless sinterings, prevent from, in sintering process, the defects such as crackle appear in ceramic structures, its cooling rate of strict control, treat that temperature is down to after 400 DEG C, Temperature fall.
The present embodiment adopts the zirconium white of 90Kg, the yttrium oxide of 4Kg, the magnesium oxide of 2Kg, the alumina sintering of 4Kg to form.
Embodiment 2, a kind of valve combined oxidation zircon ceramic, be adopt the zirconium white of 78Kg, the yttrium oxide of 5Kg, the magnesium oxide of 3Kg, the alumina sintering of 16Kg to form, other are identical with embodiment 1.
Embodiment 3, a kind of valve combined oxidation zircon ceramic, be adopt the zirconium white of 83Kg, the yttrium oxide of 4.5Kg, the magnesium oxide of 2.5Kg, the alumina sintering of 10Kg to form, other are identical with embodiment 1.
Embodiment 4, a kind of valve combined oxidation zircon ceramic, be adopt the zirconium white of 80Kg, the yttrium oxide of 4.75Kg, the magnesium oxide of 2.75Kg, the alumina sintering of 12.5Kg to form, other are identical with embodiment 1.
Embodiment 5, a kind of valve combined oxidation zircon ceramic, be adopt the zirconium white of 86Kg, the yttrium oxide of 4.25Kg, the magnesium oxide of 2.25Kg, the alumina sintering of 7.5Kg to form, other are identical with embodiment 1.

Claims (2)

1. a valve combined oxidation zircon ceramic, it is characterized in that by weight percent be the zirconium white of 78-90%, the yttrium oxide of 4-5%, the magnesium oxide of 2-3%, the aluminum oxide of 4%-16% form.
2. a kind of valve combined oxidation zircon ceramic according to claim 1, is characterized in that described zirconium white is purity 99.95%, granularity 0.4-0.7 μm.
CN201410531690.3A 2014-10-11 2014-10-11 Composite zirconium oxide ceramic for valve Pending CN104326743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410531690.3A CN104326743A (en) 2014-10-11 2014-10-11 Composite zirconium oxide ceramic for valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410531690.3A CN104326743A (en) 2014-10-11 2014-10-11 Composite zirconium oxide ceramic for valve

Publications (1)

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CN104326743A true CN104326743A (en) 2015-02-04

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Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107445612A (en) * 2017-06-28 2017-12-08 瑞声科技(新加坡)有限公司 Zirconia ceramics and preparation method thereof
CN108218407A (en) * 2018-01-24 2018-06-29 烟台金泰美林科技股份有限公司 A kind of valve alumina composite ceramic and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1260456A (en) * 2000-01-20 2000-07-19 天津大学 Toughened zirconium oxide ceramic composite steel sleeve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1260456A (en) * 2000-01-20 2000-07-19 天津大学 Toughened zirconium oxide ceramic composite steel sleeve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107445612A (en) * 2017-06-28 2017-12-08 瑞声科技(新加坡)有限公司 Zirconia ceramics and preparation method thereof
CN108218407A (en) * 2018-01-24 2018-06-29 烟台金泰美林科技股份有限公司 A kind of valve alumina composite ceramic and preparation method thereof

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Application publication date: 20150204