| Finite Element Analysis of Ceramic Coatings under Spherical Indentation with Metallic Interlayer： Part Ⅰ Uncracked Coatings |
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| 作者姓名： | Minh-Quy LE Seock-Sam KIM |
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| 作者单位： | [1]Department of Mechanics of Materials and Structures, Faculty of Mechanical Engineering, Hanoi University of Technology, Dal Co Viet Road, Hanoi, Vietnam [2]School of Mechanical Engineering, Kyungpook National University, Daegu 701-702, Korea |
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| 基金项目： | Acknowledgements This work was partially supported by K0TEF （2003） and BK21 Program of Kyungpook National University. |
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| 摘 要： | Spherical indentation of ceramic coatings with metallic interlayer was performed by means of axisymmetric finite element analysis （FEA）. Two typical ceramic coatings with relatively high and low elastic modulus deposited on aluminum alloy and carbon steel were considered. Various combinations of indenter radius-coating thickness ratios and interlayer thickness-coating thickness ratios were used in the modeling. The effects of the interlayer, the coating and the substrate on the indentation behavior, such as the radial stress distribution along the coating surface as well as the coating interface, and the plastic deformation zone evolution in the substrate were investigated in connection with the above mentioned ratios. The coating cracking dominant modes were also discussed within the context of the peak tensile stresses on the coating surface and on the coating interface.
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| 关 键 词： | 有限元分析 陶瓷涂层 球形压痕 未裂缝涂层 |
| 收稿时间： | 2005-07-15 |
| 修稿时间： | 2005-12-26 |
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