Interface failure analysis of thermal barrier coatings under CMAS penetration

被引：0
|
作者：
Zhang Z. [1 ]
Han Y. [2 ]
Wang W. [1 ]
Cai Z. [1 ]
机构：
[1] School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai
[2] Shanghai Branch China Petroleum Pipeline Engineering Corporation, Shanghai
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2021年 / 36卷 / 08期
关键词：
Calcium; magnesium; aluminum; silicon and other oxides; Coating modification; Interface strength; Thermal barrier coating; Thermally growth oxide;
D O I：
10.13224/j.cnki.jasp.20200374
中图分类号：
学科分类号：
摘要：
Influences of different calcium, magnesium, aluminum, silicon and other oxides (CMAS) penetration depths under the influences of temperature gradients and the influences of the interface roughness on the interface temperature distribution under CMAS penetration were considered based on the influences of penetration on the properties of the ceramic layer of the thermal barrier coating (TC).The influences of thermally growth oxide (TGO) thickness and interfacial stress behavior were also studied.The results showed that the penetration of CMAS increased the thermal conductivity of the ceramic layer, which further increased the interface temperature, the thickness of TGO, and also made the stress state of the interface more serious.The increase of the interface roughness led to an increase in the temperature difference between the peaks and valleys of the interface, the uneven growth of the interface TGO, and finally caused the change of the stress distribution of the interface. © 2021, Editorial Department of Journal of Aerospace Power. All right reserved.
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页码：1702 / 1711
页数：9
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