Process for producing silicon carbide whiskers

摘要

The present invention provides a process for producing silicon carbide whiskers by reacting a starting mixture comprising starting silicon source material mainly composed of silicon and oxygen and carbonaceous material at a high temperature, wherein one or more of Fe, Co and Ni ingredients are contained in the starting mixture such that the total amount of the Fe, Co, Ni ingredients is from 25 to 2000 ppm based on the silicon ingredient in the starting silicon source material. Silicon carbide whiskers at high purity can be produced at high yield with less content of powdery silicon carbide.