Finite element analysis of the effect of interfacial roughness and adhesion strength on the local delamination of hard coating under sliding contact |
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Authors: | Dongfeng Diao Akira Kandori |
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Affiliation: | aKey Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi’an Jiaotong University, Xi’an 710047, China;bDepartment of Mechanical Engineering, Shizuoka University, Hamamatsu 432, Japan |
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Abstract: | The interfacial roughness and the adhesion strength are very important for making a high-quality coating for friction and wear applications. In order to obtain a quantitative understanding concerning the effect of the two factors on the local delamination of hard coatings, finite element analyses concerning the maximum shear stress in a hard coating with various kinds of interfacial roughness and adhesion strength were made under low and high frictional conditions. As a result, local delamination maps for the identification of the local delamination of hard coatings were obtained as a function of the shear strength ratio of coating to substrate and the ratio of coating thickness to half-contact width. Also, the critical contact pressure required to produce local delamination of hard coatings is given. |
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Keywords: | Local delamination Shear strength Hard coating Sliding contact Finite element method |
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