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

作     者：Li Xiaolei~(1,2),Ma Hongan~2,Zang Chuanyi~1,Zheng Youjin~(2,3),Liu Yu~1,Zuo Guihong~3, Li Jigang~1,Li Shangsheng~2,Jia Xiaopeng~(1,2) (1.Henan Polytechnic University,Jiaozuo 454000,China 2.National Lab of Superhard Materials,Jilin University,Changchun 130012,China 3.Mudanjiang Teachers College,Mudanjiang 157012,China) 

出 版 物：《金刚石与磨料磨具工程》 (Diamond & Abrasives Engineering)

年 卷 期：2008年第28卷第S1期

页      面：181-185页

学科分类：080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：Supported by the National Natural Science Foundation of China(50572032) 

主　　题：aluminium nitride high pressure sintering microstructure residual stress 

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 micro-Raman spectroscopy(MRS).Controlling fracture mode was intragranular when the sintering temperature was as low as 1400℃under 5.0 *** 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 AlN ceramics sintered at 5.0 GPaand 1700℃for 125 min is 2.0 *** residual compression stress is increased according to the extension of the sintering time.