孔德军,张永康,朱伟,邹世坤

• 1:江苏工业学院机械工程系
• 2:江苏大学机械工程学院
• 3:江苏工业学院机械工程系
• 4:北京航空制造工程研究所 江苏常州213016

摘要(Abstract)：

用扫描电子显微镜(SEM)观察了等离子喷涂ZrO2涂层的显微结构,并用X射线衍射法(XRD)测试了ZrO2涂层相的组成和残余应力。同时测试了激光冲击处理和激光热处理后的ZrO2涂层残余应力分布,分析了热障涂层残余应力形成机理。结果表明,等离子喷涂ZrO2涂层表面残余应力均为拉应力,其均值为179.2MPa,经激光表面处理后的ZrO2涂层残余应力均表现为压应力;热应力对涂层残余应力贡献最大,当热应力超过涂层结合强度时,涂层脱落,通过控制涂层残余应力可以提高涂层界面结合强度。

关键词(KeyWords)： ZrO2涂层;X衍射法(XRD);残余应力;激光冲击处理;激光热处理

Abstract:

Keywords:

基金项目(Foundation): 江西省光子制造科学与技术重点实验室开放基金;; 江苏工业学院科研基金

作者(Author): 孔德军,张永康,朱伟,邹世坤

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