GB717463A - Improvements in or relating to an oxidic material bonded with silicon nitride - Google Patents

Improvements in or relating to an oxidic material bonded with silicon nitride

Info

Publication number
GB717463A
GB717463A GB2724352A GB2724352A GB717463A GB 717463 A GB717463 A GB 717463A GB 2724352 A GB2724352 A GB 2724352A GB 2724352 A GB2724352 A GB 2724352A GB 717463 A GB717463 A GB 717463A
Authority
GB
United Kingdom
Prior art keywords
silicon nitride
oxidic material
firing
silicon
mixture
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.)
Expired
Application number
GB2724352A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2724352A priority Critical patent/GB717463A/en
Publication of GB717463A publication Critical patent/GB717463A/en
Expired 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
    • 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
    • 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
    • C04B35/58—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/584—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
    • C04B35/591—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride obtained by reaction 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
    • 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

Abstract

Compositions suitable for refractories and abrasives are made by firing in a non-oxidizing atmosphere containing nitrogen a mixture of a refractory oxidic material and finely divided silicon. A bond of silicon nitride is formed. The mixture may be shaped before firing or briquettes made and, after firing, ground to give loose granules of silicon nitride bonded oxidic material which may be subsequently bonded by sintered metals, vitreous or ceramic bonds. A temporary binder, e.g. dextrin, is used in shaping. Refractory oxidic material is defined and specified materials are the oxides of aluminium, beryllium, thorium, chromium, zirconium, magnesium, silicon and silicates aluminates, spinels and porcelains. Preferably at least 25 per cent. silicon nitride is present. The compositions can be made more porous by the addition of pore formers, e.g. naphthalene is added and subsequently burned out, or a gas generating agent is included.
GB2724352A 1952-10-29 1952-10-29 Improvements in or relating to an oxidic material bonded with silicon nitride Expired GB717463A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2724352A GB717463A (en) 1952-10-29 1952-10-29 Improvements in or relating to an oxidic material bonded with silicon nitride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2724352A GB717463A (en) 1952-10-29 1952-10-29 Improvements in or relating to an oxidic material bonded with silicon nitride

Publications (1)

Publication Number Publication Date
GB717463A true GB717463A (en) 1954-10-27

Family

ID=10256426

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2724352A Expired GB717463A (en) 1952-10-29 1952-10-29 Improvements in or relating to an oxidic material bonded with silicon nitride

Country Status (1)

Country Link
GB (1) GB717463A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1646785B1 (en) * 1965-04-01 1971-09-16 Norton Co FIRE-RESISTANT CONSTRUCTION MATERIAL MADE OF SILICON OXYNITRIDE AND THE PROCESS FOR THE PRODUCTION
WO1987006928A1 (en) * 1986-05-12 1987-11-19 The Secretary Of State For Defence In Her Britanni Zirconia ceramic materials
EP0317980A2 (en) * 1987-11-23 1989-05-31 Norton Company Refractory ceramic material and preparation thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1646785B1 (en) * 1965-04-01 1971-09-16 Norton Co FIRE-RESISTANT CONSTRUCTION MATERIAL MADE OF SILICON OXYNITRIDE AND THE PROCESS FOR THE PRODUCTION
WO1987006928A1 (en) * 1986-05-12 1987-11-19 The Secretary Of State For Defence In Her Britanni Zirconia ceramic materials
EP0317980A2 (en) * 1987-11-23 1989-05-31 Norton Company Refractory ceramic material and preparation thereof
EP0317980A3 (en) * 1987-11-23 1990-06-20 Norton Company Refractory ceramic material and preparation thereof

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