EP4323326A1 - Corps moulé composite constitué d?une céramique mixte liée par réaction infiltrée avec du silicium - Google Patents

Corps moulé composite constitué d?une céramique mixte liée par réaction infiltrée avec du silicium

Info

Publication number
EP4323326A1
EP4323326A1 EP21721875.9A EP21721875A EP4323326A1 EP 4323326 A1 EP4323326 A1 EP 4323326A1 EP 21721875 A EP21721875 A EP 21721875A EP 4323326 A1 EP4323326 A1 EP 4323326A1
Authority
EP
European Patent Office
Prior art keywords
weight
molding according
proportion
composite molding
silicon
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
EP21721875.9A
Other languages
German (de)
English (en)
Inventor
Lars Schnetter
Philipp Gingter
Clara MINAS-PAYAMYAR
Fabian Heinz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schunk Ingenieurkeramik GmbH
Original Assignee
Schunk Ingenieurkeramik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schunk Ingenieurkeramik GmbH filed Critical Schunk Ingenieurkeramik GmbH
Publication of EP4323326A1 publication Critical patent/EP4323326A1/fr
Pending legal-status Critical Current

Links

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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5093—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with elements other than metals or carbon
    • C04B41/5096—Silicon
    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • C04B35/573—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide obtained by reaction sintering or recrystallisation
    • 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
    • C04B35/6263—Wet mixtures characterised by their solids loadings, i.e. the percentage of solids
    • 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
    • C04B35/6303—Inorganic additives
    • C04B35/6316—Binders based on silicon compounds
    • 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
    • C04B35/65—Reaction sintering of free metal- or free silicon-containing compositions
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/457—Non-superficial impregnation or infiltration of the substrate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0414—Layered armour containing ceramic material
    • 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
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3821—Boron carbides
    • 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
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3826—Silicon carbides
    • 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
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/421—Boron
    • 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
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • 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
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/428—Silicon
    • 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
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
    • 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
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
    • 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
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
    • 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
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5463—Particle size distributions
    • 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
    • C04B2235/6022—Injection 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
    • C04B2235/60—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
    • C04B2235/6026—Computer aided shaping, e.g. rapid prototyping
    • 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
    • C04B2235/6027—Slip casting
    • 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
    • C04B2235/604—Pressing at temperatures other than sintering temperatures
    • 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
    • C04B2235/608—Green bodies or pre-forms with well-defined density
    • 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
    • C04B2235/616—Liquid infiltration of green bodies or pre-forms
    • 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
    • C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
    • C04B2235/728—Silicon content
    • 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
    • C04B2235/77—Density
    • C04B2235/775—Products showing a density-gradient
    • 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
    • C04B2235/78—Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
    • 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
    • C04B2235/78—Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
    • C04B2235/786—Micrometer sized grains, i.e. from 1 to 100 micron
    • 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
    • C04B2235/94—Products characterised by their shape
    • 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
    • C04B2235/95—Products characterised by their size, e.g. microceramics
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/36—Non-oxidic
    • C04B2237/365—Silicon carbide
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/70—Forming laminates or joined articles comprising layers of a specific, unusual thickness
    • C04B2237/704—Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the ceramic layers or articles

Definitions

  • the invention relates to a composite molding made from a reaction-bonded mixed ceramic infiltrated with silicon.
  • reaction-bonded SiC reaction-bonded SiC
  • RB B4C reaction-bonded B4C
  • combinations of these materials RBSiC/B4C
  • silicon carbide, and especially boron carbide provide the lightest protection solutions, they also generate the highest costs. For this reason, these materials are preferably used in the field of aircraft protection and personal protection. In the area of personal protection/body protection, monoliths (one-piece protective elements) are used in particular.
  • sintered materials typically offer an option for lighter protection elements than reaction-bonded materials, but in most cases the reaction-bonded materials offer better value for money.
  • RB B4C can also be used successfully with a proportion of RBSiC for various threat classes such as NIJ4 and ammunition types with hardened steel cores. These materials dominate the market in Europe but also in Asian countries such as Korea.
  • a silicon-infiltrated boron carbide is known from US Pat. No. 3,857,744, which uses a grain size of “600 grit to 120 grit”. A grain size of ⁇ 110 pm is therefore typically used.
  • the B4C share here is significantly greater than 50% by weight. However, it has been shown that high B4C proportions lead to poorer performance compared to WC/Co ammunition, since the boron carbide is amorphized.
  • the object of the invention is therefore to create an improved composite shaped body, which consists of a reaction-bonded SiC/B4C material, which has an optimized price-performance ratio and can also be used against the important tungsten carbide ammunition.
  • a ceramic body is hereby created, in particular for use as ballistic protection, based on a metal-ceramic composite material which contains Si, SiC and coarse-grained B4C.
  • the material properties are determined by the raw material recipe, the shaping process and the siliconization process.
  • the composite moldings produced in this way typically have an optimized density, high hardness and are particularly suitable for ballistic protection applications due to the special microstructure.
  • the microstructure can be achieved with a reaction-bonded silicon-infiltrated Influence mixed ceramics by the formation of secondary silicon carbide.
  • the type and amount of carbon additive are decisive for the formation of secondary silicon carbide and thus for the formation of the binding bridges that determine the strength of the material.
  • the siliconization process in which molten silicon penetrates the porous molded body, is significantly influenced by the pore structure.
  • the large B4C grains in combination with a proportion that is not too high prevent amorphization, with the SiC matrix being stabilized.
  • the selected size of the primary grains of B4C also has a stabilizing effect with the SiC matrix.
  • the formation of secondary silicon carbide and the binding bridges produced with it can be influenced.
  • a smaller amount of SiC formed during the infiltration for example >5% by weight and ⁇ 25% by weight and an Si content ⁇ 20% by weight, is advantageous.
  • the material seems to develop a kind of functional deformability at the B4C level, with a ceramic that is hardly deformable per se.
  • a low Si content and a higher SiC content can be advantageous.
  • a remaining Si content of ⁇ 15% by weight is particularly advantageous.
  • a material with a B4C content of between 30-40% by weight, a proportion of secondary SiC of 15-25% by weight and an Si content ⁇ 15% by weight and a primary particle size of the B4C>100 ⁇ m is particularly preferred .
  • slip casting reaches its limits here, as cracks and large-scale deformation can occur more frequently. This also applies to isostatically pressed material, since the density gradients in isostatic pressing also increase with size and volume.
  • powder bed-based 3D printing has turned out to be a suitable manufacturing method for very large components.
  • Powder bed printing is a very efficient manufacturing method, particularly for the material according to the invention—coarse B-iC combined with fine SiC.
  • the large dimensions are required in particular in the aviation sector, e.g. as protective components for seats or large panels.
  • the coarse crystallites of B4C obviously offer the advantage of high efficiency in printing, and it has also surprisingly turned out that the large components produced in this way are significantly more homogeneous than products that are produced by casting, die casting or isostatic pressing. Compared to isostatic pressing and subsequent green processing, powder bed printing also offers considerable cost advantages, since no machining (milling of the green body) is necessary and significantly less material has to be used.
  • 3D powder bed printing it is thus possible with 3D powder bed printing to produce large components such as seat shells and backrests from the composite molding according to the invention. Thanks to the near-netshape approach, these offer additional options for weight savings in addition to the pure savings through the material, since material only has to be used where it is actually required according to the application.
  • Protective panels produced in this way can easily assume dimensions of 1m 2 and more, so that entire protective elements such as doors, tailgates, floor elements and other structural components of a vehicle or aircraft can be produced from a single structure.
  • the large elements facilitate integration and avoid joints that can otherwise present weak points in the shot. It is known that at triple points (the point where 3 corners of a ballistic tile meet) ballistic performance decreases by up to 30%. Due to the high homogeneity of the material resulting from 3D printing, however, very large components with an envelope volume > 200 x 200 x 200mm 3 or even large areas > 500 x 500mm 2 can be realized without any problems.
  • FIG. 1 schematically shows a section of a micrograph.
  • the invention relates to a composite molded body made from a reaction-bonded mixed ceramic infiltrated with silicon, the structure of which is determined by primary grains of crystalline B4C grains with an average grain size d50 > 100 pm and ⁇ 500 pm and a proportion of > 10% by weight and ⁇ 50% by weight %.
  • the structure is also determined by primary grains of silicon carbide with d50 ⁇ 100 pm and a proportion of > 10% by weight and ⁇ 50% by weight.
  • the primary grains are siliconized and connected by secondary silicon carbide with a proportion of >5% by weight and ⁇ 25% by weight, in a silicon matrix with a free metallic silicon content of >1% by weight and
  • ⁇ 20% by weight 1 shows an example of a micrograph according to the invention.
  • the percentages by weight are percentages by weight.
  • the invention thus relates to a reaction-bonded SiC/B4C with a B4C content
  • a stable support matrix for the primary crystals B4C and SiC can be created in this way and the resistance to projectiles, for example, can be increased.
  • a composite molding with a B4C content between 30% by weight and 40% by weight and an Si content ⁇ 15% by weight and a primary particle size of the B4C >200 ⁇ m is particularly preferred.
  • the primary grains of silicon carbide are present with d50 ⁇ 40 pm, in particular ⁇ 10 pm.
  • the density gradient can be ⁇ 2%.
  • the composite molding can also contain boron dissolved within the metallic silicon in a proportion of between >0.05 and ⁇ 5% by weight.
  • the micrograph of Fig. 1 shows the B4C content primary grains 1, free, metallic silicon 2 and a penetrating composite of fine-grained, primary and secondary silicon carbide 3.
  • the composite shaped body can be produced by pressure slip casting, which includes the production of a slip with SiC/B4C particles as well as colloidal carbon and organic auxiliaries.
  • the resulting green body is then contacted with liquid silicon and infiltrated at temperatures between 1500°C and 1700°C.
  • the silicon reacts with the carbon to form secondary SiC.
  • the shaping takes place by 3D printing, since this enables the realization of complex products, such as seat shells and backrests, for aeronautical applications.
  • the ceramics produced in this way in combination with polymers (PE, aramid, etc.) as well as carbon fibres, glass fibers and/or metals, offer particularly efficient protection against WC/Co ammunition, in particular against ammunition types M993 and M995.
  • the invention also relates to the use of the composite molding as a ballistic protection.
  • the composite molding is preferably covered with one or more layers of a backing material.
  • a backing material can be pressed with the mixed ceramic according to the invention.
  • the backing material can also preferably be formed from several layers of one or more plastics, for example polyethylene, aramid, etc., carbon fibers, glass fibers, metal, for example aluminum, steel, etc., combinations of these materials and/or connecting material, for example adhesive foils.
  • a body armor plate from the composite molded body according to the invention, for which purpose pressure slip casting is used.
  • an aqueous suspension consisting of colloidal carbon with an average particle size of less than 1 ⁇ m in a proportion of 10% by weight, fine-grained silicon carbide with an average particle size of 5-1 ⁇ m in a proportion of 50% by weight and coarse-grained B4C an average particle size of 120 pm with a proportion of 40% by weight.
  • 18% by weight of water and 1% by weight of organic auxiliaries wetting agents, liquefaction auxiliaries, binders
  • the slip is then cast on a die-casting machine using a porous plastic mold based on polymethyl methacrylate at a slip pressure of 40 bar to form a multiply curved plate with the dimensions 350 ⁇ 275 ⁇ 9 mm.
  • the shard formed in this way is then dried in a circulating air drying chamber and converted via reaction firing to a ceramic plate based on a reaction-bonded composite material, consisting essentially of SiC and B4C as well as free Si.
  • the composite molded body thus obtained forms a body protection plate which can be used as a monolithic insert of a ballistic body armor vest.
  • the composite molding consists, for example, of a material obtained comprising coarse-grained B4C with a proportion of 31% by weight, fine-grained primary SiC with a proportion of 41% by weight, fine-grained secondary SiC with a proportion of 17% by weight and free, metallic silicon with a proportion of 11% by weight.
  • a vehicle protection panel from the composite molding according to the invention, for which purpose uniaxial compression molding is used.
  • an aqueous suspension is prepared according to the composition described in Example 1 and processed further by means of a spray-drying process to give pressed granules. Only the composition of the organic auxiliaries has to be adjusted and a pressing auxiliaries added.
  • the granulate is then poured into a square carbide mold and pressed at a pressure of 1700 bar.
  • the blank obtained in this way is then subjected to reaction firing, from which a ceramic plate based on a reaction-bonded composite material, consisting essentially of SiC and B4C as well as free Si, is produced, with an edge length of 50mm and a wall thickness of 9mm.
  • the composite molded body obtained in this way forms a polygonal protective panel which can be used for the efficient lining of large areas in vehicle protection.
  • the grains are selectively solidified at the points specified by a CAD model on which they are based, by adding an organic binder drop by drop, preferably furan resin, which is applied via inkjet print heads.
  • the CAD model used here which corresponds to the final component geometry, allows complex structures to be created. Following these two sub-steps, the construction area level is lowered by a previously defined layer thickness, which in this case is 300 pm. This sequence of steps is repeated iteratively until the layer-by-layer implementation of the CAD model is complete.
  • the complex-shaped preform obtained in this way has a Porosity of 45 vol .-% and is then infiltrated with an aqueous dispersion consisting of 30 wt .-% colloidal carbon and a dispersing agent and a wetting agent.
  • a ceramic preform with a complex shape is obtained in this way, consisting of 87% by weight of the original SiC—E C powder mixture and 13% by weight of colloidal carbon.
  • this ratio changes to 79/21% by weight, after a possible third impregnation step to 76/24% by weight.
  • the complex-shaped preform obtained in this way is converted into a ceramic body based on a reaction-bonded composite material, consisting essentially of SiC and B4C as well as free Si, by means of a reaction firing.
  • the material obtained in this way consists, for example, of coarse-grained B4C with a proportion of 15% by weight, fine-grained primary SiC with a proportion of 45% by weight, fine-grained secondary SiC with a proportion of 24% by weight and free metallic material Si with a proportion of 15% by weight.
  • the complex-shaped preliminary body obtained in this way can be used as the basic element of a ballistic helmet for head protection, with the production using the 3D printing process described here allowing the production of an ergonomic, potentially individualized helmet geometry.
  • weight-optimized seat shells for use in various aircraft can be obtained in this way.
  • the seat shell produced in this way has a size of approx. 300 x 300mm, a wall thickness of 9mm and a height of 200mm and is ergonomically shaped.
  • the associated backrest has a length of 500mm, a width of 300mm and a height of 100mm and is also ergonomically shaped. Such large components can be produced without cracks. Processing using subtractive processes is no longer necessary.
  • the composite molding according to the invention is produced by means of a powder-bed-based 3D printing process, the mixing ratio in this case being 50% by weight SiC and 50% by weight B4C.
  • the material obtained in this way consists, for example, of coarse-grained B4C with a proportion of 26% by weight, fine-grained primary SiC with a proportion of 35% by weight, fine-grained secondary SiC with a proportion of 24% by weight, and free metallic silicon with a proportion of 15% by weight.
  • the side element produced in this way has dimensions of 1200 mm x 800 mm x 9 mm, for example.
  • protection means no penetration by the projectile with a back face deformation of 39mm in the test.
  • the general rule for the backing is that it can be formed from aramid fiber fabrics, polyethylene (PE), carbon fiber fabrics, glass fiber fabrics and/or a mixture thereof.
  • the backing can preferably be attached to the mixed ceramic on one or both sides to be appropriate. In general, it is therefore the case that with a surface weight of preferably ⁇ 32 kg/m 2 1 shot of M995 with a tungsten carbide core can preferably be stopped.
  • protection means no penetration by the projectile with a back face deformation of 29 mm in the 1st shot and 37 mm in the 2nd shot in the test.
  • the general rule for the backing is that it can be formed from aramid fiber fabrics, polyethylene (PE), carbon fiber fabrics, glass fiber fabrics and/or a mixture thereof.
  • the backing can preferably be attached to the mixed ceramic on one or both sides. In general, it is therefore the case that with a basis weight of preferably ⁇ 40 kg/m 2 , 2 shots of M995 with a tungsten carbide core can preferably be stopped at a distance of 100 mm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Products (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

La présente invention concerne un corps moulé composite fabriqué à partir d'une céramique mixte liée par réaction, infiltrée avec du silicium, dont la structure est déterminée par des grains primaires de grains cristallins de B4C (1) ayant une taille de grain moyenne d50 > 100 µm et < 50 µm et une proportion de > 10 % en poids et < 50 % en poids, également déterminée par des grains primaires d'un carbure de silicium plus fin ayant d50 < 70 µm et une proportion de > 10 % en poids et < 50 % en poids, et les grains primaires sont silicifiés (3) par du carbure de silicium formé secondairement ayant une proportion de > 5 % en poids et < 25 % en poids, dans une matrice de silicium ayant une teneur en silicium métallique libre (2) de > 1 % en poids et < 20 % en poids.
EP21721875.9A 2021-04-16 2021-04-16 Corps moulé composite constitué d?une céramique mixte liée par réaction infiltrée avec du silicium Pending EP4323326A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2021/059908 WO2022218540A1 (fr) 2021-04-16 2021-04-16 Corps moulé composite constitué d'une céramique mixte liée par réaction infiltrée avec du silicium

Publications (1)

Publication Number Publication Date
EP4323326A1 true EP4323326A1 (fr) 2024-02-21

Family

ID=75690260

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21721875.9A Pending EP4323326A1 (fr) 2021-04-16 2021-04-16 Corps moulé composite constitué d?une céramique mixte liée par réaction infiltrée avec du silicium
EP22168592.8A Pending EP4074676A1 (fr) 2021-04-16 2022-04-14 Corps moulé composite à partir d'une céramique mixte liée par réaction, infiltrée au silicium

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP22168592.8A Pending EP4074676A1 (fr) 2021-04-16 2022-04-14 Corps moulé composite à partir d'une céramique mixte liée par réaction, infiltrée au silicium

Country Status (9)

Country Link
US (1) US20240158311A1 (fr)
EP (2) EP4323326A1 (fr)
JP (1) JP2024516957A (fr)
KR (1) KR20230169966A (fr)
AU (1) AU2021440327A1 (fr)
CA (1) CA3214362A1 (fr)
DE (1) DE112021007519A5 (fr)
IL (1) IL307727A (fr)
WO (1) WO2022218540A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3765300A (en) * 1967-05-22 1973-10-16 Carborundum Co Dense carbide composite for armor and abrasives
US3857744A (en) 1970-01-19 1974-12-31 Coors Porcelain Co Method for manufacturing composite articles containing boron carbide
JPS5914026B2 (ja) 1976-02-27 1984-04-02 ヘキスト・アクチ−エンゲゼルシヤフト ２−カルボアルコキシアミノ−ベンズイミダゾリル−５（６）−スルホン酸−フェニルエステル化合物
EP0372708A1 (fr) * 1988-11-10 1990-06-13 United Kingdom Atomic Energy Authority Procédé de production d'un corps à base de carbure de silicium
US6609452B1 (en) 2000-01-11 2003-08-26 M Cubed Technologies, Inc. Silicon carbide armor bodies, and methods for making same
US8128861B1 (en) 2000-07-21 2012-03-06 M Cubed Technologies, Inc. Composite materials and methods for making same
WO2005079207A2 (fr) 2003-11-25 2005-09-01 M Cubed Technologies, Inc. Corps composites en carbure de bore et leurs procedes de fabrication
US20110009255A1 (en) 2005-12-22 2011-01-13 Coorstek, Inc. Boron-silicon-carbon ceramic materials and method of making
KR101190561B1 (ko) * 2008-04-04 2012-10-16 토토 가부시키가이샤 복합 재료 및 그의 제조 방법
DE102017217321A1 (de) * 2017-09-28 2019-03-28 Sgl Carbon Se Keramisches Bauteil
US11364654B2 (en) * 2018-12-17 2022-06-21 Ut-Battelle, Llc Indirect additive manufacturing process for producing SiC—B4C—Si composites

Also Published As

Publication number Publication date
WO2022218540A1 (fr) 2022-10-20
AU2021440327A1 (en) 2023-10-12
KR20230169966A (ko) 2023-12-18
EP4074676A1 (fr) 2022-10-19
IL307727A (en) 2023-12-01
JP2024516957A (ja) 2024-04-18
CA3214362A1 (fr) 2022-10-20
DE112021007519A5 (de) 2024-04-04
US20240158311A1 (en) 2024-05-16

Similar Documents

Publication Publication Date Title
DE10157487C1 (de) Faserverstärkter Verbundkörper für Schutzpanzerungen, seine Herstellung und Verwendungen
DE19736560C2 (de) Verfahren zur Herstellung eines porösen Körpers, Körper aus SiC, sowie Verwendung des porösen Körpers
DD283368A5 (de) Verfahren fuer die herstellung eines selbsttragenden koerpers
EP1380809A2 (fr) Corps composites céramiques
EP3984980A1 (fr) Corps moulé en carbure de silicium lié par réaction, infiltré au silicium
EP3366389A1 (fr) Matériaux composites à résistance à l&#39;usure très élevée
WO2018206250A1 (fr) Impression 3d de matériaux composite à matrice métallique
DE4320102A1 (de) Verfahren zur Herstellung von polykristallinen dichten Formkörpern auf der Basis von Borcarbid durch drucklose Sinterung
EP1493723A1 (fr) Procédé pour la fabrication des céramiques, les dispositifs céramiques et les préformes pour la fabrication des céramiques
EP2809628B1 (fr) Matériaux composites à base de carbure de silicium renforcés par des fibres
DE19652223C2 (de) Formkörper aus einem Werkstoffverbund, Verfahren zu seiner Herstellung und Verwendung
DE102004016874C5 (de) Verbundwerkstoff, Verfahren zu seiner Herstellung und seine Verwendung
DE10207860B4 (de) Poröse Siliciumcarbid-Keramik und Verfahren zu ihrer Herstellung
WO2014044433A1 (fr) Production d&#39;un élément en métal réfractaire
DE2651311A1 (de) Verbundkoerper aus keramik und verfahren zu seiner herstellung
DE19654182C2 (de) Verfahren zur Herstellung eines keramischen Formkörpers durch Reaktionszonensinterung und Verwendung des Formkörpers
DE102007025894B4 (de) Glaskeramik-Panzermaterial
DE69922714T2 (de) Verbundkörper, Vorform zur seiner Herstellung sowie Verfahren zu deren Herstellung
EP4323326A1 (fr) Corps moulé composite constitué d?une céramique mixte liée par réaction infiltrée avec du silicium
EP2053029B1 (fr) Procédé destiné à la fabrication d&#39;un composant en céramique de carbure
EP2157065B1 (fr) Procédé de fabrication d&#39;une céramique transparente poly-cristalline
DE69609330T2 (de) Verfahren zur herstellung eines verbundwerkstoffes
DE10303351B3 (de) Bauteil aus Metall/Keramik-Verbundwerkstoff mit intermetallischer Matrix, dessen Verwendung als Panzermaterial und Verfahren zu dessen Herstellung
EP0486421B1 (fr) Procédé pour fabriquer un materiau métallique et matériau obtenu par ce procédé
DE69412977T2 (de) Neutronenabsorbierendes Verbundmaterial und Verfahren zu dessen Herstellung

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20231113

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
RAV Requested validation state of the european patent: fee paid

Extension state: MA

Effective date: 20231113