Sintering of nano crystalline �? silicon carbide doping with aluminium nitride

[摘要] Sinterable silicon carbide powders were prepared by attrition milling and chemical processing of an acheson type ð›�?-SiC. Pressureless sintering of these powders was achieved by addition of aluminium nitride together with carbon. Nearly 99% sintered density was obtained. The mechanism of sintering was studied by scanning electron microscopy and transmission electron microscopy. This study shows that the mechanism is a solid sintering process.

[学科分类] 材料工程

[关键词] Sintering mechanism;silicon carbide;aluminium nitride;polytype.