Process for preparing fine grain silicon carbide powder

Title: Process for preparing fine grain silicon carbide powder

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Abstract

Method of producing fine-grain silicon carbide powder comprises combining methyltrimethoxysilane with a solution of phenolic resin, acetone and water or sugar and water, gelling the resulting mixture, and then drying and heating the obtained gel.

Inventors:: Wei, G.C.

OSTI Identifier:: 5305379

Application Number:: ON: DE84005973

Assignee:: EDB-84-030151

DOE Contract Number:: W-7405-ENG-26

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; SILICON CARBIDES; CHEMICAL PREPARATION; ACETONE; DRYING; GELS; HEATING; POWDERS; PRODUCTION; RESINS; CARBIDES; CARBON COMPOUNDS; COLLOIDS; DISPERSIONS; KETONES; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; POLYMERS; SILICON COMPOUNDS; SYNTHESIS; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication

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                    Wei, G.C. Process for preparing fine grain silicon carbide powder.  United States: N. p.,  
        Web.

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                    Wei, G.C. Process for preparing fine grain silicon carbide powder.  United States.

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                    Wei, G.C. .  
        "Process for preparing fine grain silicon carbide powder".  United States.

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@article{osti_5305379,

  title        = {Process for preparing fine grain silicon carbide powder},

  author       = {Wei, G.C.},

  abstractNote = {Method of producing fine-grain silicon carbide powder comprises combining methyltrimethoxysilane with a solution of phenolic resin, acetone and water or sugar and water, gelling the resulting mixture, and then drying and heating the obtained gel.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {},

  month        = {}

}

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Process for preparing fine grain silicon carbide powder

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Finely divided silicon carbide powder is obtained by mixing colloidal silica and unreacted phenolic resin in either acetone or methanol, evaporating solvent from the obtained solution to form a gel, drying and calcining the gel to polymerize the phenolic resin therein, pyrolyzing the dried and calcined gel at a temperature in the range of 500 to 1000/sup 0/C, and reacting silicon and carbon in the pyrolyzed gel at a temperature in the range of 1550 to 1700/sup 0/C to form the powder.
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