ZrO_2的t→m相变对Al_2O_3－ZrO_2陶瓷表面残余应力的影响

Effect Factors of t→m Phase Transmision of ZrO_2 on the Surface Residual Stress of Al_2O_3-ZrO_2 Ceremics

本文利用ＸＲＤ分析了Ａｌ２Ｏ３－ＺｒＯ２及Ａｌ２Ｏ３陶瓷的表面残余应力．并对其产生的原因和有关的影响因素进行了深入的讨论，结果表明机械研磨后陶瓷表面均存在残余压应力，而且ＺｒＯ２的ｔ→ｍ相变比机械研磨对残余应力的贡献大。

This article analyze the surface residual stress of Al2O3-ZrO2 and Al2O3 ceremics by means of XRD,it also go on deeply discuss for the reason and relative effect factors. the result Shows that the ceremics surface all exist residual stress after mechanical grind.and the contribution of t→m phase transmision of ZrO2 to residual stressis bigger than machanical grind's.