GB1396916A - Method for the production of mouldings of great hardness which contains silicon nitride and or silicon oxynitride - Google Patents

Method for the production of mouldings of great hardness which contains silicon nitride and or silicon oxynitride

Info

Publication number
GB1396916A
GB1396916A GB4573172A GB4573172A GB1396916A GB 1396916 A GB1396916 A GB 1396916A GB 4573172 A GB4573172 A GB 4573172A GB 4573172 A GB4573172 A GB 4573172A GB 1396916 A GB1396916 A GB 1396916A
Authority
GB
United Kingdom
Prior art keywords
mouldings
silicon nitride
silicon oxynitride
production
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.)
Expired
Application number
GB4573172A
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.)
Saint Gobain IndustrieKeramik Roedental GmbH
Original Assignee
Annawerk Keramische Betriebe 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 Annawerk Keramische Betriebe GmbH filed Critical Annawerk Keramische Betriebe GmbH
Publication of GB1396916A publication Critical patent/GB1396916A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
    • C01B21/068—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with 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
    • C04B35/58—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
    • C04B35/593—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 pressure sintering

Abstract

1396916 Silicon nitride and silicon oxynitride compositions ANNAWERK GmbH 4 Oct 1972 [5 Oct 1971] 45731/72 Heading C1A Mouldings which contain silicon nitride and/or silicon oxynitride are prepared by reacting a silicon halide, e.g. SiCl 4 or SiBr 4 with an excess of NH 3 , removing the ammonium halide produced, e.g. by heating the powder produced in an inert atmosphere at up to 1100‹ C., mixing the remaining powder with up to 20% by weight of an alkaline earth oxide, e.g. MgO and pressing the mixture at temperatures between 1300‹ and 1800‹ C. at pressures greater than 200 hp./sq. inch. Preferably 5 to 8% by weight MgO is used.
GB4573172A 1971-10-05 1972-10-04 Method for the production of mouldings of great hardness which contains silicon nitride and or silicon oxynitride Expired GB1396916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712149735 DE2149735C3 (en) 1971-10-05 1971-10-05 Process for the production of shaped bodies of great hardness from silicon nitride and / or silicon oxynitride

Publications (1)

Publication Number Publication Date
GB1396916A true GB1396916A (en) 1975-06-11

Family

ID=5821555

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4573172A Expired GB1396916A (en) 1971-10-05 1972-10-04 Method for the production of mouldings of great hardness which contains silicon nitride and or silicon oxynitride

Country Status (5)

Country Link
JP (1) JPS4845511A (en)
DE (1) DE2149735C3 (en)
FR (1) FR2156633B1 (en)
GB (1) GB1396916A (en)
IT (1) IT975085B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173493A (en) * 1985-04-11 1986-10-15 Toshiba Ceramics Co Producing b-si3n4
CN114634364A (en) * 2022-03-08 2022-06-17 中国科学院过程工程研究所 Pure phase Si2N2Method for synthesizing O powder
CN115432674A (en) * 2021-06-04 2022-12-06 中国科学院过程工程研究所 Method for preparing high-quality silicon nitride powder by using multistage fluidized bed

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2256651B (en) * 1986-07-15 1993-06-30 Norton Co Improved rolling contact bearing,material for bearing surfaces,and processes therefor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB970639A (en) * 1960-03-24 1964-09-23 Plessey Co Ltd Method of producing high density silicon nitride

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173493A (en) * 1985-04-11 1986-10-15 Toshiba Ceramics Co Producing b-si3n4
US4888142A (en) * 1985-04-11 1989-12-19 Toshiba Ceramics Co., Ltd. Process for producing β-form Si3 N4
CN115432674A (en) * 2021-06-04 2022-12-06 中国科学院过程工程研究所 Method for preparing high-quality silicon nitride powder by using multistage fluidized bed
CN114634364A (en) * 2022-03-08 2022-06-17 中国科学院过程工程研究所 Pure phase Si2N2Method for synthesizing O powder
CN114634364B (en) * 2022-03-08 2023-08-11 中国科学院过程工程研究所 Pure phase Si 2 N 2 Synthesis method of O powder

Also Published As

Publication number Publication date
DE2149735B2 (en) 1978-02-09
JPS4845511A (en) 1973-06-29
FR2156633A1 (en) 1973-06-01
DE2149735C3 (en) 1978-10-19
DE2149735A1 (en) 1973-04-12
IT975085B (en) 1974-07-20
FR2156633B1 (en) 1977-08-05

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee