硅酸盐学报2017，Vol.45Issue(6)：806-810,5.DOI:10.14062/j.issn.0454-5648.2017.06.08
烧结工艺对多孔氮化硅陶瓷显微结构和力学性能的影响
Effect of Sintering Process on Microstructure and Mechanical Properties of Silicon Nitride
张敬义 1范锦鹏 1刘晓明 1周军 1郄冬春 1张大海1
作者信息
- 1. 航天材料及工艺研究所,先进功能复合材料技术重点实验室,北京 100076
- 折叠
摘要
Abstract
Porous Si3N4 ceramics were produced through dry press shaping and gas pressure sintering. The effects of sintering temperature and holding time on the microstructure and mechanical properties of porous Si3N4 ceramics were investigated. The porosity, phase composition, flexural strength and elastic modulus of porous Si3N4 ceramics sintered at different sintering schedules were determined, and the microstructures of porous Si3N4 ceramics were analyzed. The results show that the density,α-Si3N4→β-Si3N4 transformation,β-Si3N4 grain growth and flexural strength of material increase when sintering temperature increases. The flexural strength and the porosity of porous Si3N4prepared at sintering temperature of 1900℃ and holding time of 15 min are 106MPa and 49%, respectively.关键词
多孔氮化硅/弯曲强度/密度/烧结温度Key words
porous silicon nitride/flexural strength/density/sintering temperature分类
化学化工引用本文复制引用
张敬义,范锦鹏,刘晓明,周军,郄冬春,张大海..烧结工艺对多孔氮化硅陶瓷显微结构和力学性能的影响[J].硅酸盐学报,2017,45(6):806-810,5.
