侧面压入法评价涂层界面结合性能的影响因素

材料热处理学报, 2012, 33(3): 156-160.

侧面压入法评价涂层界面结合性能的影响因素

张凯亮 ^1, , 陈光南 ^2, , 张坤 ^3, , 吴臣武 ^4, , 罗耕星 ^5, , 王秀凤 ^6,

1.中国科学院力学研究所,北京100190／中国科学院研究生院,北京100190

2.中国科学院力学研究所,北京100190

3.中国科学院力学研究所,北京100190

4.中国科学院力学研究所,北京100190

5.中国科学院力学研究所,北京100190

6.北京航空航天大学机械工程及自动化学院,北京100191

基金项目: 国家自然科学基金重点项目(50531060)

关键词：压入 , 计算机模拟 , 涂层 , 结合性能

Factors influencing cross-sectional indentation to evaluate coating adhesion

Keywords： indentation , computer simulation , coating , adhesion

采用数值模拟与实验测量相结合的方法,以钢基镀铬层为对象,研究了侧面压入法评价涂层界面结合性能的影响因素,包括压头形状、压入点距离和涂层厚度等。结果表明：侧面压入导致涂层扇形脱落,脱落尺寸随压入点距离增大而增大,与有限元计算结果符合较好。经综合分析,推荐实验规范为：压头为90°圆锥,压入点距离为涂层厚度的2～3倍。

Factors influencing cross-sectional indentation to evaluate coating adhesion were investigated by numerical simulation and experiments.For the model of chromium-plated steel substrate,indenter geormetry,indentation location and coating thickness were considered.The results show that the coating detaches from the substrate with the shape of fan,its size increases with intereasing the indentation distance and agrees well with computation.Generally,the tip angle of a conical indenter and the ratio of indentation distance to coating thickness are recommended to be 90° and 2 to 3,respectively.

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