真实TGO界面形貌对热障涂层界面应力的影响

doi:10.13251/j.issn.0254-6051.2021.11.041

金属热处理 ›› 2021, Vol. 46 ›› Issue (11): 232-235.DOI: 10.13251/j.issn.0254-6051.2021.11.041

真实TGO界面形貌对热障涂层界面应力的影响

郭蕙敏¹, 李博¹, 张立群¹, 陶敬镭¹, 黄委¹, 裴修远¹, 肖俊峰², 南晴²

1.华能苏州热电有限责任公司, 江苏苏州 215129;
2.西安热工研究院有限公司, 陕西西安 710054

收稿日期:2021-07-10 出版日期:2021-11-25 发布日期:2021-12-08
通讯作者: 肖俊峰,研究员,E-mail:xiaojunfeng@tpri.com.cn
作者简介:郭蕙敏(1967—),男,高级工程师,主要研究方向为燃气-蒸汽联合循环机组运行与维护技术研究与应用,E-mail:13913992355@163.com
基金资助:
华能苏州热电厂科技项目(HNKJ20-G00)

Effect of real TGO interface topography on interface stress of thermal barrier coatings

Guo Huimin¹, Li Bo¹, Zhang Liqun¹, Tao Jinglei¹, Huang Wei¹, Pei Xiuyuan¹, Xiao Junfeng², Nan Qing²

1. Huaneng Suzhou Cogeneration Co., Ltd., Suzhou Jiangsu 215129, China;
2. Xi'an Thermal Power Research Institute Co., Ltd., Xi'an Shaanxi 710054, China

Received:2021-07-10 Online:2021-11-25 Published:2021-12-08

摘要/Abstract

摘要： 采用MSC.MARC有限元分析软件,以真实服役的某重型燃气轮机透平第一级动叶片表面热障涂层为研究对象,研究真实TGO界面形貌对热障涂层界面应力的影响。结果表明:在TC/TGO界面的TC层中,法向应力σ₂₂分布中的拉应力位于波谷区域,压应力位于波峰区域,而在BC/TGO界面的BC层中,σ₂₂应力分布与TC层相反;TC层与BC层的剪切应力σ₁₂分布规律相同,均是波谷左侧的应力方向为负,波谷右侧的应力方向为正。TGO界面的波峰和波谷处的法向应力σ₂₂值随TGO厚度的增大而增加;当TGO厚度不变时,BC/TGO界面振幅增大,TGO内和BC内的法向应力σ₂₂值也随之增大。

关键词: 热障涂层, 界面应力, 热生长氧化物, 有限元分析

Abstract: Effect of real thermally growth oxide (TGO) interface topography on interface stress of thermal barrier coatings on the surface of first-stage blade of a heavy-duty gas turbine was studied by using finite element analysis software MSC.MARC. The results show that in the top coat (TC) layer at the TC/TGO interface, the tensile stress in normal stress σ₂₂ is located in the trough area, and the compressive stress is located in the peak area; while in the bond coat (BC) layer at the BC/TGO interface, the σ₂₂ stress distribution is opposite to that of the TC layer. The σ₁₂ stress distribution of the BC layer is the same as that of the TC layer, the distribution of shear stress σ₁₂ in the TC layer is that the stress direction on the left side of the trough is negative, and that on the right side is positive. The normal stress σ₂₂ at the peak and trough in the TGO increases with the thickness increase of the TGO; and when the thickness of TGO is constant, with the increase of the amplitude of the BC/TGO interface, the σ₂₂ stress in TGO and BC increases.

Key words: thermal barrier coatings, interface stress, thermally growth oxide (TGO), finite element analysis

中图分类号:

TG174.44

郭蕙敏, 李博, 张立群, 陶敬镭, 黄委, 裴修远, 肖俊峰, 南晴. 真实TGO界面形貌对热障涂层界面应力的影响[J]. 金属热处理, 2021, 46(11): 232-235.

Guo Huimin, Li Bo, Zhang Liqun, Tao Jinglei, Huang Wei, Pei Xiuyuan, Xiao Junfeng, Nan Qing. Effect of real TGO interface topography on interface stress of thermal barrier coatings[J]. Heat Treatment of Metals, 2021, 46(11): 232-235.

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真实TGO界面形貌对热障涂层界面应力的影响

Effect of real TGO interface topography on interface stress of thermal barrier coatings

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