王建生

• 1:西北大学材料技术研究所!美国伊里诺依艾文斯顿IL60201

摘要(Abstract)：

机械损伤是否产生取决于损伤驱动力及损伤抗力 ,对于陶瓷涂层而言 ,区别于单质固体的是 ,其损伤驱动力及损伤抗力二者都与材料本身相关 ,二者都受涂层与基体材料间的热学及力学匹配、涂层与基体材料的弹塑性性能、涂层的厚度及显微组织、以及涂层与基体界面的粗糙度等因素的影响。因此 ,涂层的热—机械行为的完整表征必须借助于基于破坏机制的损伤图才能完成。这种损伤图将相关参数有机地结合在一起 ,从而定出损伤安全区。而建立这种损伤图 ,必须有可靠的实验技术以测定涂层及界面的断裂韧性。而这种测试技术仍处于发展阶段 ,迄今并无完善的方法。作者正在研究及发展的多应变开裂及失稳试验 ,可能是目前最为简便易行而可靠的方法。本文略述测试与损伤图相关的参数的试验方法。

关键词(KeyWords)： 机械损伤;陶瓷涂层;热—机械行为;损伤图

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王建生

DOI: 10.13289/j.issn.1009-6264.2000.02.005

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