Process for preparing fine grain silicon carbide powder

Patent ·

OSTI ID:5447475

Wei, G C

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.

• DOE Contract Number: W-7405-ENG-26
• Assignee: EDB-84-030153
• Application Number: ON: DE84005922
• OSTI ID: 5447475
• Country of Publication: United States
• Language: English

Related Subjects

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