摘要
本文以含有稀土氧化物的反应烧结氮化硅（ＲＢＳＮ）为前驱体，通过高温气氛加压烧结（ＧＰＳ），研究成功了弯曲强度从室温到１４００℃保持基本不变的氨化硅陶瓷材料．通过对样品的显微结构分析研究，发现材料的力学性能与显微结构中含有一定量的长柱状β－Ｓｉ３Ｎ４晶粒和具有耐高温的晶界相有密切关系．
The gas pressure sintering (GPS) behaviour of reaction-bonded silicon nitride (RBSN) with Rare-Earth Oxides additives has been studied. It has been found that the mechanical properties of the materials processed are closely related with the existence of a certain amount of fine-textured elongated grain in the matrix and the high refractory crystalline phase at the grain boundaries. The results obtained show that no obvious degradation of strengths has been found with the rising of testing temperatures up to 1400℃.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1994年第3期303-308,共6页
Journal of Inorganic Materials
关键词
氮化硅
气压烧结
稀土氧化物
陶瓷
silicon nitride, gas pressure sintering, grain boundary phase, high temperature properties
