Densification of Aluminum Nitride Ceramics with CaF2 Additive

摘要：

　　Effect of adding up to 5wt% CaF2 on the densification and m icrostructural development of hot pressed aluminum nitride (AIN) was investigated.SEM investigation showed that the grain size of the sintered sample decreases with the increasing content of CaF2.Secondary-phase evolution paths converge from CA6 to CA phase above 1650℃.TEM micrographs showed that formed secondary phases could evaporate from sintered bodies at higher temperatures in the carbon-containing nitrogen atmosphere and the residuals were mainly distributed at triple grain junctions,keeping direct connections of AIN grains.Translucnet AIN ceramics were prepared using CaF2 additive sintered at 1850℃ for 5 h.

关键词： AIN ceramics CaF2 additive Densification

作者: Yan Xiong Zhengyi Fu Hao Wang

作者单位: State Key Lab of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,P.R.China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 970-972

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）