纳米结构陶瓷涂层的磨削表面残余应力的X衍射测定法  

X ray measuring method for nanostructured ceramic coatings grinding surface residual stresses

作　　者：刘伟香[1] 周忠于 

机构地区：[1]湖南理工学院机电系,湖南岳阳414000 [2]岳阳市交通局,湖南岳阳414000

出　　处：《湖南理工学院学报（自然科学版）》2007年第3期70-72,共3页Journal of Hunan Institute of Science and Technology(Natural Sciences)

基　　金：湖南省2006年青年骨干教师培养对象资助项目(湘教通[2006]252号);湖南省教育厅2006年科研项目(06C374)

摘　　要：磨削后的纳米结构陶瓷涂层零件表面会出现使零件强度降低的裂纹,而产生这些裂纹的原因就是磨削表面残余应力。这些表面残余应力使不同晶粒的同族晶面面间距随晶面方位及应力的大小发生有规律的变化,从而使X射线衍射谱线发生位偏移,根据位偏移的大小利用σ=K·M就可以计算出残余应力的大小。The crack which reduced the components intensity appeard on the surface of nanostructured ceramic coatings after grinding, it was the grinding surface residual stresses that caused the crack. These surface residual stress caused surface distance changed orderly along with the crystal face position and the stress size for the consanguineous crystal face in different crystal grain, thus caused X beam diffraction spectral line to have a position displacement, the residual stress can be calculated out according to the position displacement and use σ=K·M.

关 键 词：纳米结构陶瓷涂层 磨削 表面残余应力 X射线衍射 

分 类 号：O348[理学—固体力学]