摘要
研究了以粘土直接合成Sialon/SiC复相材料的氧化行为 ,以及Sialon相含量、氧化温度和氧化时间对氧化过程的影响· 结果表明 ,Sialon/SiC复相材料的氧化速度与温度成正比、与时间的平方根成正比·Sialon相的抗氧化性优于SiC相· 这种材料的氧化反应是一种钝化反应 ,具有较好的抗氧化性 ,Sialon相含量的增加能提高材料的抗氧化性·
The oxidation behaviour of Sialon/ SiC composites which were directly synthesized by using cheap clay has been studied. The effects of Sialon content, oxidation temperature and oxidation time on the oxidation behaviors of the composites were investigated. It is showed that the oxidiation speed of the Sialon/SiC composites is linearly increased increasing the temperature, and is increased as a function of the square root of the time. The oxidation resistance of Sialon phase is better than SiC. The oxidation dynamics of the multiphase materials obeys the typical parabolic rule. The oxidation resistance of the composites increases with increasing the Sialon content.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第4期417-419,共3页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目 ( 5 92 0 2 0 0 9)
