GB1533675A - Silicon carbide sintered bodies - Google Patents

Silicon carbide sintered bodies

Info

Publication number
GB1533675A
GB1533675A GB25420/76A GB2542076A GB1533675A GB 1533675 A GB1533675 A GB 1533675A GB 25420/76 A GB25420/76 A GB 25420/76A GB 2542076 A GB2542076 A GB 2542076A GB 1533675 A GB1533675 A GB 1533675A
Authority
GB
United Kingdom
Prior art keywords
silicon carbide
particles
sintered
alpha
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
GB25420/76A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1533675A publication Critical patent/GB1533675A/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
    • C04B35/515—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

Abstract

To produce a sintered silicon carbide object having temperature-resistant properties, the procedure is as follows: A substantially homogeneous mixture of solid particles is prepared, whose particles are smaller than 1 mu m and which essentially consists of silicon carbide. The latter is composed of ss-silicon carbide and 0.05 to 5% by weight of alpha -silicon carbide, relative to the ss-silicon carbide, the ss-silicon carbide particles having an average particle size of up to 0.45 mu m and the alpha -silicon carbide particles having a particle size at least twice that of the ss-silicon carbide particles. In addition, the mixture must contain a boron addition and a quantity of a carbonaceous material. The mixture is moulded to give an unsintered object and sintered at a temperature in the region from 1950 to 2300 DEG C in an inert atmosphere. The sintered object has a density of at least 80% of the theoretical density for silicon carbide and contains alpha -silicon carbide in a quantity of at least 70% by weight, relative to the total quantity of silicon carbide. The process can be used for the fabrication of shaped objects, for example of pipes or hollow gas turbine blades.
GB25420/76A 1975-06-30 1976-06-18 Silicon carbide sintered bodies Expired GB1533675A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59184075A 1975-06-30 1975-06-30

Publications (1)

Publication Number Publication Date
GB1533675A true GB1533675A (en) 1978-11-29

Family

ID=24368166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25420/76A Expired GB1533675A (en) 1975-06-30 1976-06-18 Silicon carbide sintered bodies

Country Status (9)

Country Link
JP (3) JPS526716A (en)
CA (1) CA1334677C (en)
CH (1) CH623018A5 (en)
DE (1) DE2627856A1 (en)
FR (1) FR2316028A1 (en)
GB (1) GB1533675A (en)
IT (1) IT1063441B (en)
NL (1) NL183645C (en)
NO (1) NO143400C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5182059A (en) * 1989-01-17 1993-01-26 Ngk Insulators, Ltd. Process for producing high density SiC sintered bodies
NO335994B1 (en) * 2011-10-13 2015-04-13 Saint Gobain Ceramic Mat As Process for producing grains useful for the preparation of a silicon carbide-based sintered product, composite grains prepared by the process, and use of the grains.

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS526716A (en) * 1975-06-30 1977-01-19 Gen Electric Silicon carbide sintered articles
DE2744636A1 (en) * 1977-10-04 1979-05-17 Wolfgang Dipl Ing Boecker METHOD AND DEVICE FOR MANUFACTURING HIGHLY PURE SILICON CARBIDE POWDER AND ITS USE
US4238434A (en) * 1978-02-16 1980-12-09 Ibigawa Electric Industry Co., Ltd. Method of producing a silicon carbide sintered body
DE2953430C2 (en) * 1978-12-21 1985-07-04 Evgenij Aleksandrovič Antonov Process for the production of hollow products by deep drawing and pressing to carry out this process
DE3005587A1 (en) * 1980-02-15 1981-08-20 Kernforschungsanlage Jülich GmbH, 5170 Jülich METHOD FOR PRODUCING MOLDED BODIES
JPS57196769A (en) * 1981-05-26 1982-12-02 Ibigawa Electric Ind Co Ltd Manufacture of silicon carbide sintered body
JPS57196768A (en) * 1981-05-26 1982-12-02 Ibigawa Electric Ind Co Ltd Manufacture of high strength silicon carbide sintered body
JPS5974609U (en) * 1982-11-11 1984-05-21 東芝機器株式会社 lighting equipment
JPS6046974A (en) * 1983-08-26 1985-03-14 信越化学工業株式会社 Silicon carbide sintered body
JPS6064686U (en) * 1983-10-07 1985-05-08 富士通株式会社 Signal interface circuit with optical switch
JPS60155572A (en) * 1984-01-24 1985-08-15 科学技術庁無機材質研究所長 Manufacture of high heat conductivity silicon carbide sintered body
JPH0625038B2 (en) * 1985-05-22 1994-04-06 住友化学工業株式会社 Method for manufacturing wear-resistant silicon carbide sintered body
JPS6256368A (en) * 1985-09-06 1987-03-12 株式会社東芝 Manufacture of silicon carbide sintered body
JPH0777987B2 (en) * 1986-04-14 1995-08-23 東芝セラミツクス株式会社 Silicon carbide rod for suspended firing
JPS6360158A (en) * 1986-09-01 1988-03-16 イビデン株式会社 Manufacture of silicon carbide sintered body
US5192719A (en) * 1986-09-01 1993-03-09 Ibiden Co., Ltd. Method of producing high-strength β-type silicon carbide sintered bodies
DE3718095A1 (en) * 1987-05-29 1988-12-08 Hutschenreuther POLYCRYSTALLINE MOLDED BODY FROM SILICON CARBIDE AND METHOD FOR THE PRODUCTION THEREOF
DE3736660A1 (en) * 1987-10-29 1989-05-11 Mtu Muenchen Gmbh METHOD FOR PRODUCING A POROUS FORM BODY
KR910002578B1 (en) * 1988-01-19 1991-04-27 닙폰 가이시 카부시키카이샤 Method for producing a high density sintered body of silicon carbide
DE3902528A1 (en) * 1989-01-28 1990-10-31 Sintec Keramik Gmbh Production of polycrystalline shaped bodies comprising alpha - and/or ss-silicon carbide by pressureless sintering
DE4041514C2 (en) * 1990-12-22 1995-05-24 Forschungszentrum Juelich Gmbh Process for producing dense sintered workpieces
JP2005298280A (en) * 2004-04-13 2005-10-27 Toto Ltd Silicon carbide sintered compact and method for producing the same
CN108558405B (en) * 2017-03-10 2021-08-24 成都超纯应用材料有限责任公司 Preparation method of high-density high-purity silicon carbide substrate material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB632247A (en) * 1947-07-04 1949-11-18 Carborundum Co Improvements in or relating to silicon carbide articles and methods of forming them
FR1235791A (en) * 1958-09-17 1960-07-08 Kempten Elektroschmelz Gmbh Process for manufacturing articles of specific shape from carbides
GB1478898A (en) * 1973-10-24 1977-07-06 Gen Electric Silicon carbide ceramic
US4312954A (en) * 1975-06-05 1982-01-26 Kennecott Corporation Sintered silicon carbide ceramic body
JPS526716A (en) * 1975-06-30 1977-01-19 Gen Electric Silicon carbide sintered articles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5182059A (en) * 1989-01-17 1993-01-26 Ngk Insulators, Ltd. Process for producing high density SiC sintered bodies
NO335994B1 (en) * 2011-10-13 2015-04-13 Saint Gobain Ceramic Mat As Process for producing grains useful for the preparation of a silicon carbide-based sintered product, composite grains prepared by the process, and use of the grains.
US9376348B2 (en) 2011-10-13 2016-06-28 Saint-Gobain Ceramic Materials As Method for making a dense sic based ceramic product

Also Published As

Publication number Publication date
JPS6363513B2 (en) 1988-12-07
NO762247L (en) 1977-01-03
NO143400B (en) 1980-10-27
JPS57170876A (en) 1982-10-21
CA1334677C (en) 1995-03-07
DE2627856C2 (en) 1987-06-11
NO143400C (en) 1981-02-04
NL7607252A (en) 1977-01-03
IT1063441B (en) 1985-02-11
CH623018A5 (en) 1981-05-15
DE2627856A1 (en) 1977-01-20
JPS57170877A (en) 1982-10-21
JPS6363514B2 (en) 1988-12-07
FR2316028A1 (en) 1977-01-28
NL183645C (en) 1988-12-16
FR2316028B1 (en) 1981-02-13
JPS526716A (en) 1977-01-19
NL183645B (en) 1988-07-18
JPS5740109B2 (en) 1982-08-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19960617