Preparation of SiC whiskers

摘要

Organic fibers are oxidized, ground and blended with a source of silica. Heat treatment of the blend in the range of 1400 DEG to 1700 DEG C. results in the formation of SiC whiskers. Various fibers including PAN, pitch and rayon which can be processed to form carbon and/or graphite fibers can be used as the carbon source. Ashed rice hulls as the source of silica are blended with the chopped fiber to form the SiC whiskers.