Fabrication and residual stresses of aluminum nitride ceramics sintered at high-pressure

摘要：

High-density AlN ceramics were fabricated without sintering additives at high pressure (5.0 GPa)and temperature (1300 ～ 1800 ℃). The sintered bodies were characterized by XRD, SEM and miero-Raman spectroscopy (MRS). Controlling fracture mode was intragranular when the sintering temperature was as low as 1400 ℃ under 5.0 GPa. The values of residual stresses due to the distortion of the AlN lattice were assessed using the Micro-Raman Spectroscopy (MRS). The residual compression stress of the AIN ceramics sintered at 5.0 GPaand 1700 ℃ for 125 min is 2.0 GPa. The residual compression stress is increased according to the extension of the sintering time.

关键词： aluminium nitride high pressure sintering mierostructure residual stress

作者: Li Xiaolei Ma Hongan Zang Chuanyi Zheng Youjin Liu Yu Zuo Guihong Li Jigang Li Shangsheng Jia Xiaopeng

作者单位: Henan Polytechnic University, Jiaozuo 454000, China;National Lab of Superhard Materials, Jilin Unive National Lab of Superhard Materials, Jilin University, Changchun 130012, China Henan Polytechnic University, Jiaozuo 454000, China National Lab of Superhard Materials, Jilin University, Changchun 130012, China;Mudanjiartg Teachers Mudanjiartg Teachers College, Mudanjiang 157012, China

会议类型: 国际会议

会议名称: 第五届郑州国际超硬材料及制品研讨会

会议地点: 郑州

会议语种:英文

页码: 181-185

在线出版日期: 2008-09-05（万方平台首次上网日期，不代表论文的发表时间）