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中文摘要: 厚热障涂层因具有优异的隔热效果， 在航空发动机热端部件防护上获得应用。 在高温燃气冲蚀环境中服役
后， 致密厚热障涂层呈局部块状剥落而失效。 本文对涂层失效后的截面形貌、 元素分布、 相结构等进行分析。 结
果表明， 涂层失效的主要原因是表面附着物的渗入和焰流冲蚀下致密厚热障涂层内部应力的增加。 采用高能等离
子喷涂制备具有弥散分布裂纹的厚热障涂层有望提高涂层寿命。
Abstract:Thick thermal barrier coatings are used in the protection of hot-end components of aero-engines because
of their excellent thermal insulation effect. After serving in a high-temperature gas erosion environment, the dense
and thick thermal barrier coating flakes off locally and fails. In this paper, the cross-sectional morphology, element
distribution, phase structure of the coatings after failure has been investigated. The results show that the main
reason for the failure of the coating is the infiltration of surface attachments and the increase in internal stress of
the dense and thick thermal barrier coating under flame erosion. The service life of thick thermal barrier coating
with dispersed cracks prepared by high-energy plasma spraying is expected to be improved.
文章编号： 中图分类号：TG174.4 文献标志码：
基金项目:
引用文本：
郑南松,姬小兰,张志远,张远应,郭建云.厚热障涂层的失效分析研究[J].热喷涂技术,2020,12(4):69-73.
Nansong Zheng, ,,,,Xiaolan Ji,Zhiyuan Zhang,Yuanying Zhang,Jianyun Guo.Study on Failure Analysis of Thick Thermal Barrier Coating[J].Thermal Spray Technology,2020,12(4):69-73.
郑南松,姬小兰,张志远,张远应,郭建云.厚热障涂层的失效分析研究[J].热喷涂技术,2020,12(4):69-73.
Nansong Zheng, ,,,,Xiaolan Ji,Zhiyuan Zhang,Yuanying Zhang,Jianyun Guo.Study on Failure Analysis of Thick Thermal Barrier Coating[J].Thermal Spray Technology,2020,12(4):69-73.