涂层基体体系中压头半径对体系的影响  

Influence of Spherical Indenter's Radius on Coating Substrate Composite

作　　者：覃森[1] 潘亦苏[1] 

机构地区：[1]西南交通大学工程科学研究院,成都610031

出　　处：《重庆工学院学报》2007年第23期33-35,106,共4页Journal of Chongqing Institute of Technology

基　　金：国家自然科学基金资助项目(10472097)

摘　　要：对于典型的在钢基体上的类金刚石涂层,涂层基体体系中由于基体在界面上或界面下发生塑性变形而导致体系破坏.考虑不同涂层厚度及在球形压头上纯张力载荷作用,通过参数化弹塑性有限元分析,研究了基体涂层的失效机制,并讨论了涂层厚度与压头半径的比率对涂层的失效模式的影响.In the case of typical DLC layers on tool steel, the first damage of the layer substrate composite is found to occur by substrate plasticity at or below the interface. In this paper Failure mechanisms of the substrate coating composite are studied through a parametric elastic-plastic finite element analysis, and the influence of the ratio of layer thickness and indenter radius on a failure mechanism is discussed.

关 键 词：金刚石涂层 有限元分析 失效模式 

分 类 号：TG174[金属学及工艺—金属表面处理]