Failure analysis of EB-PVD LaZrCeO/YSZ TBCs exposed to molten NaCl in thermal cycling

被引：2

作者：

Liu, Yang ^{[1
,2
]}

Xie, Min ^{[1
,2
]}

Li, Ruiyi ^{[1
,2
]}

Pei, Xun ^{[1
,2
]}

Zhang, Yonghe ^{[1
,2
]}

Mu, Rende ^{[3
]}

Bao, Jinxiao ^{[1
,2
]}

Song, Xiwen ^{[1
,2
]}

机构：

[1] Inner Mongolia Univ Sci & Technol, Sch Mat & Met, Baotou 014010, Inner Mongolia, Peoples R China

[2] Inner Mongolia Key Lab Adv Ceram & Devices, Baotou 014010, Inner Mongolia, Peoples R China

[3] Aero Engine Corp China, Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2022年 / 48卷 / 21期

基金：

中国国家自然科学基金;

关键词：

Thermal barrier coatings (TBCs); Electron beam-physical vapor deposition (EB-PVD); Marine atmospheric; Thermal corrosion cycling; Corrosion mechanisms; HOT CORROSION BEHAVIOR; BARRIER COATINGS; CONDUCTIVITY; STABILITY; OXIDATION; VAPOR; MICROSTRUCTURE; SIMULATION; DEPOSITION; EVOLUTION;

D O I：

10.1016/j.ceramint.2022.07.190

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study focuses on understanding the corrosion behavior of LaZrCeO/YSZ (LZC/YSZ) coatings exposed to molten NaCl at high temperatures and compares it with that of YSZ coating. There is significant damage in LZC/ YSZ coatings compared with YSZ coating, attributed to the synergistic effect of the thermal growth stress introduced by thermal growth oxide thickening, thermal stress caused by the thermal expansion mismatch be- tween the double ceramic layers (DCLs), and the degradation of the bond coating. The lifetime of LZC/YSZ coatings was reduced significantly in the molten NaCl. The thermal mismatch stress between the DCLs was considered to be the main reason why the damage to the LZC/YSZ coatings was more serious than that to the YSZ coating.

引用

页码：32444 / 32454

页数：11

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