Allen Trafton Reed

US Patent:

45474303, Oct 15, 1985

Filed:

Nov 10, 1981

Appl. No.:

6/319976

Inventors:

William M. Goldberger - Chicago IL
Allen K. Reed - Chicago IL

Assignee:

Superior Graphite Company - Chicago IL

International Classification:

B32B 900

US Classification:

428404

Abstract:

The present invention is directed to a reaction product of silica sand and of particulate carbonaceous material to form, silicon carbide on the surface of the carbonaceous particles and within the pores thereof, with the silicon carbide ultra-microcrystallites having a diameter of approximately 500 Angstroms and the composition comprising approximately 60% silicon carbide. The present invention is further directed to the process by which the ultra-microcrystallite silicon carbide product is made. In other preferred embodiments the ultra-microcrystallites of silicon carbide may be separated from the carbonaceous material by heat or physical methods to form a substantially pure ultra-microcrystallite silicon carbide product.