GB1232617A - - Google Patents

Info

Publication number
GB1232617A
GB1232617A GB4988868A GB1232617DA GB1232617A GB 1232617 A GB1232617 A GB 1232617A GB 4988868 A GB4988868 A GB 4988868A GB 1232617D A GB1232617D A GB 1232617DA GB 1232617 A GB1232617 A GB 1232617A
Authority
GB
United Kingdom
Prior art keywords
carbon
solid phase
gaseous
silicon
phase carbon
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
GB4988868A
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 filed Critical
Publication of GB1232617A publication Critical patent/GB1232617A/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
    • 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
    • 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
    • C01B32/977—Preparation from organic compounds containing silicon
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

1,232,617. Silicon carbide. LAPORTE INDUSTRIES Ltd. 17 Oct., 1969 [21 Oct., 1968; 29 Aug., 1969], Nos. 49888/68 and 43137/69. Heading C1A. Silicon carbide whiskers are prepared by contacting at elevated temperature in a reaction zone a gaseous halogen-containing silicon compound and a source of carbon selected from solid phase carbon and gaseous carbon-containing compounds, at least part of the source being solid phase carbon, with a refractory oxide material containing or consisting of one or both of aluminium oxide and beryllium oxide and effecting deposition of silicon carbide from the resulting gaseous products. The refractory oxide material may be combined with silica or it may be an alumino silicate. The refractory material and at least part of the solid phase carbon are preferably in particulate form. The refractory material calculated as aluminium or beryllium oxide preferably constitutes greater than 1% by weight of the total weight of solid phase carbon and refractory material in the reaction zone. The gaseous halogen containing silicon compound may be a silicon halide preferably silicon tetrachloride or silicon tetrafluoride or it may be an alkylhalosilane preferably containing fluorine and chlorine and up to three carbon atoms per molecule. The gaseous carbon containing compound may be carbon monoxide, a hydrocarbon, preferably a saturated aliphatic hydrocarbon, preferably methane. The hydrocarbon may be one that cracks at the elevated temperature and provides at least part of the solid phase carbon. A diluent gas, preferably hydrogen, may be introduced with the gaseous reactants. The elevated temperature lies in the range between 1350‹ and 1800‹ C., preferably 1450‹ to 1650‹ C.
GB4988868A 1968-10-21 1968-10-21 Expired GB1232617A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4988868 1968-10-21

Publications (1)

Publication Number Publication Date
GB1232617A true GB1232617A (en) 1971-05-19

Family

ID=10453900

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4988868A Expired GB1232617A (en) 1968-10-21 1968-10-21

Country Status (1)

Country Link
GB (1) GB1232617A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118464A (en) * 1977-02-07 1978-10-03 University Of Utah Process for separating silica from silicate-bearing materials
US5614162A (en) * 1994-02-17 1997-03-25 Societe Nationale Industrielle Et Aerospatiale Process for the production of long fibrous silicon carbide whiskers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118464A (en) * 1977-02-07 1978-10-03 University Of Utah Process for separating silica from silicate-bearing materials
US5614162A (en) * 1994-02-17 1997-03-25 Societe Nationale Industrielle Et Aerospatiale Process for the production of long fibrous silicon carbide whiskers

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees