GB1484164A - Production of silicon carbide - Google Patents

Production of silicon carbide

Info

Publication number
GB1484164A
GB1484164A GB48564/74A GB4856474A GB1484164A GB 1484164 A GB1484164 A GB 1484164A GB 48564/74 A GB48564/74 A GB 48564/74A GB 4856474 A GB4856474 A GB 4856474A GB 1484164 A GB1484164 A GB 1484164A
Authority
GB
United Kingdom
Prior art keywords
carbon
silicon
silicon carbide
silica
nov
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
GB48564/74A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1484164A publication Critical patent/GB1484164A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/28—Compounds of silicon
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C01B32/914—Carbides of single elements
    • C01B32/956—Silicon carbide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C01B32/914—Carbides of single elements
    • C01B32/956—Silicon carbide
    • C01B32/963—Preparation from compounds containing silicon
    • C01B32/97—Preparation from SiO or SiO2
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C01B32/914—Carbides of single elements
    • C01B32/956—Silicon carbide
    • C01B32/963—Preparation from compounds containing silicon
    • C01B32/984—Preparation from elemental silicon
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

1484164 Silicon carbide E I DU PONT DE NEMOURS & CO 8 Nov 1974 [8 Nov 1973] 48564/74 Heading C1A Silicon carbide is produced by heating a mixture of carbon and silica, both in particular form, in a mole ratio of carbon to silica of from 2 : 1 to 6 : 1 at a temperature of from 1350‹ to 1750‹ C. in the presence of particulate elemental silicon in an amount of from 3À5 to 22% by weight based on the weight of carbon, silica and silicon used. The preferred temperature range is from 1400‹ to 1600‹ C. If necessary the product is subsequently heated in air at at least 400‹ C. to oxidize any residual carbon; excess silicon, if any is removed by an acid leaching step using a mixture of hydrofluoric and nitric acids and residual acid together with any carbon liberated by the leaching step are removed by a further heating step at a temperature of at least 400‹ C.
GB48564/74A 1973-11-08 1974-11-08 Production of silicon carbide Expired GB1484164A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US41412873A 1973-11-08 1973-11-08

Publications (1)

Publication Number Publication Date
GB1484164A true GB1484164A (en) 1977-09-01

Family

ID=23640069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48564/74A Expired GB1484164A (en) 1973-11-08 1974-11-08 Production of silicon carbide

Country Status (3)

Country Link
JP (1) JPS5075600A (en)
DE (1) DE2452799A1 (en)
GB (1) GB1484164A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5850929B2 (en) 1978-03-10 1983-11-14 株式会社東芝 Method for manufacturing silicon carbide powder
DE2910059C2 (en) * 1978-03-15 1982-05-19 Suzuki, Hiroshige, Tokyo Process for the production of finely divided silicon carbide and its use for the production of high-density sintered bodies
US4217335A (en) * 1979-06-14 1980-08-12 Nippon Crucible Co., Ltd. Process for producing β-silicon carbide fine powder
JPS5684310A (en) * 1979-12-14 1981-07-09 Hiroshige Suzuki Manufacture of betaatype silicon carbide
JPS5891017A (en) * 1981-11-26 1983-05-30 Denki Kagaku Kogyo Kk Purifying method for alpha-type silicon nitride
JPS5923831A (en) * 1982-07-28 1984-02-07 Tokai Carbon Co Ltd Production of composite material reinforced with sic whisker
JPS60258918A (en) * 1985-03-20 1985-12-20 Toshiba Ceramics Co Ltd Manufacture of sic-si heat equalizing tube for manufacturing gas impermeable semiconductor
JPH0354111A (en) * 1989-07-19 1991-03-08 Kansai Coke & Chem Co Ltd Production of sic fine powder
JP6270414B2 (en) * 2013-10-30 2018-01-31 太平洋セメント株式会社 Method for producing silicon carbide
JP6297812B2 (en) * 2013-10-30 2018-03-20 太平洋セメント株式会社 Method for producing silicon carbide

Also Published As

Publication number Publication date
JPS5075600A (en) 1975-06-20
DE2452799A1 (en) 1975-05-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee