Preparation of Superfine SiC Powder by Attrition Milling
HUANG Zheng ren, JIANG Dong liang, TAN Shou hong (Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai\ 200050,China)
Attrition milling was used to grind coarse silicon carbide powders to submicron sizes. The influences of milling parameters including solid content, ratio of grinding media to ground powder and grinding time on particle size and size distribution and oxidation have been investigated. An excellent particle size distribution has been obtained. Finally, a superfine SiC powder of mean particle size of 0 47μm and oxygen content less than 1 5 wt% was prepared by attrition milling.