热障涂层中孤岛氧化物对界面残余应力的影响

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热障涂层中孤岛氧化物对界面残余应力的影响

韩志勇，靖珍珠

（taptap下载安装安卓天津市民用航空器适航与维修重点实验室，天津300300）

收稿日期:2013-07-02 修回日期:2013-09-06 出版日期:2014-08-26 发布日期:2014-10-31
作者简介:韩志勇（1970—），男，河北石家庄人，副教授，博士，研究方向为表面改性.
基金资助:
国家自然科学基金项目渊U1333107冤

Effect of isolated oxide on interface residual stress in thermal barrier coatings

HAN Zhi-yong,JING Zhen-zhu

(Civil Aircraft Airworthiness and Maintenance Key Lab of Tianjin,CAUC,Tianjin 300300,China)

Received:2013-07-02 Revised:2013-09-06 Online:2014-08-26 Published:2014-10-31

摘要/Abstract

摘要：

使用ABAQUS有限元分析软件研究热障涂层热循环过程中孤岛氧化物对涂层界面残余应力的影响。选取正弦和平面形貌作为涂层的典型界面特征。结果表明，氧化物位于波峰处对涂层界面残余应力的影响大于位于波谷处对界面的影响。孤岛氧化物距离TGO/BC界面越近袁对界面残余应力影响越大。孤岛氧化物半径越小对TGO/BC界面残余应力影响越小。

关键词: 热障涂层, 孤岛氧化物, 残余应力, 有限元分析

Abstract:

The interface residual stresses in thermal barrier coatings during thermal cycling for different isolated oxides are modeled by using finite element analysis software ABAQUS. Sine and plane patterns are selected as typical interfaces feature of TBCs. It shows that the effect of oxide in the peak on the interface residual stresses is more significant compared with the oxide in the trough. With shorter distance between isolated oxide and TGO/BC interface,the influence of the isolated oxide on the interface residual stresses gets more serious. Besides,the shorer of the isolated oxide radius,the less effect of which on the interface residual stresses.

Key words: thermal barrier coatings, isolated oxide, residual stress, finite element analysis

中图分类号:

TG172.6

韩志勇，靖珍珠. 热障涂层中孤岛氧化物对界面残余应力的影响[J]. taptap下载安装安卓学报.

HAN Zhi-yong,JING Zhen-zhu. Effect of isolated oxide on interface residual stress in thermal barrier coatings[J]. .

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