摘要
采用纳米ＳｉＣ粉体制备了Ｓｉ３Ｎ４／纳米ＳｉＣｐ复相陶瓷。研究了制备工艺、纳米ＳｉＣ含量对材料性能及显微结构的影响，并对材料显微结构特点与强韧化机制进行了分析讨论。结果表明：添加２０ｖｏｌ％＜１００ｎｍ的ＳｉＣ粉体时，复相陶瓷的室温抗弯强度达８５６ＭＰａ，当添加１０ｖｏｌ％上述ＳｉＣ粉体时，复相陶瓷的增韧效果最佳，断裂韧性达８．２７ＭＰａｍ１／２，比基体材料提高了２３％。
Si 3N 4/nano SiC particles multiphase ceramics were prepared by using nano size SiC powders. The effects of manufacture process and SiC content on microstructure and mechanical properties were studied in detail. The microstructure characteristics and toughening mechanism were discussed. The results obtainted show that the maximum flexuel strength of this multiphase ceramics is 856 MPa by adding 20 vol% SiCp (<100nm), which is 22% higher than that of the matrix. The maximum fracture tougheness is 8.27MPam 1/2 by adding 10vol% SiCp (<100nm), which is 23% higher than that of the matrix.
出处
《硅酸盐通报》
CAS
CSCD
1998年第1期4-9,共6页
Bulletin of the Chinese Ceramic Society
关键词
氮化硅
碳化硅
陶瓷
复合陶瓷
纳米级
silicon nitride, silicon carbide, nano, multiphase ceramics
