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Title: Process for preparing fine grain silicon carbide powder

Abstract

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.

Inventors:
OSTI Identifier:
5447475
Application Number:
ON: DE84005922
Assignee:
EDB-84-030153
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; CARBON; GELS; POWDERS; SILICA; SILICON; CARBIDES; CARBON COMPOUNDS; CHALCOGENIDES; COLLOIDS; DISPERSIONS; ELEMENTS; MINERALS; NONMETALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; SEMIMETALS; SILICON COMPOUNDS; SILICON OXIDES; SYNTHESIS; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication

Citation Formats

Wei, G C. Process for preparing fine grain silicon carbide powder. United States: N. p., Web.
Wei, G C. Process for preparing fine grain silicon carbide powder. United States.
Wei, G C. . "Process for preparing fine grain silicon carbide powder". United States.
@article{osti_5447475,
title = {Process for preparing fine grain silicon carbide powder},
author = {Wei, G C},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {},
month = {}
}