Sintering Temperature Study of Hot-pressed Y-SiAION Ceramics

摘要：

　　In order to investigate the effect of sintering temperature on the microstructure and densification process of Y-SiAlON ceramics,by hot pressing at 1750°,1800°,1850° and 1900℃ for 1 h,respectively,Y-α-SiAlON (m=1.2,n=1.2 according to formula Mm/3Si12-(m+n)Alm+nOnN16-n) was fabricated from α-Si3N4,AlN,Al2O3 and Y2O3 starting powers.The results showed that α-SiAlON phase is formed in all sintered specimens,and during Y-SiAlON sintering,all the samples begin to quickly shrink at 1550℃,and the shrinkage is finished at 1750℃,which indicate that 1550 ~ 1750 ℃ is very important for the densification process of Y-α-SiAlON ceramics,and 1750 ℃ is necessary for the Y-SiAlON densification.Higher sintering temperature contributes to α-SiAlON grain development and the SiAlON ceramics densification.

关键词： SiAlON Sintering temperature Hot pressing

作者: Shan Yingchun Xu Jiujun Song Qinji Li Jiangtao

作者单位: Electromechanics and Materials Engineering College,Dalian Maritime University,Dalian 116026,China Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100080,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: 905-907

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）