PREPARATION OF SiC-AlN COMPOSITE POWDERS BY INORGANIC SOL-GEL PROCESSING
来源期刊：中国有色金属学报(英文版)1998年第2期
论文作者：Xiao Hanning Yin Jixiang Gao Jiming Yang Qiaoqin
文章页码：301 - 303
Key words：silicon carbide; aluminium nitride; sol-gel
Abstract: SiC-AlN composite powders were prepared with silica sol, alumina sol and carbon black by sol-gel processing. The particle size of the powders usually ranged in 50~100nm and showed a slight increase with the increase of AlN content. In the carbothermal carbide/nitride process of Si-Al-O-C-N system, an intermediate product Si3Al3O3N5(sialon) appeared at 1 300℃and gradually decomposed into SiC and AlN at higher temperatures. However, Si3N4 was not observed during the synthesizing process. SiC was obviously dissolved into AlN and resulted in the formation of SiC-AlN solid solution over 1 500℃.
