Anti-CMAS corrosion mechanism of Al2O3 pore sealing and laser remelting on thermal barrier coatings

被引：7
作者：
Chen, Zehao [1 ]
Hu, Peng [2 ]
Pei, Yanling [2 ]
Teng, Junpeng [3 ]
Dong, Tao [4 ]
Wang, Jinlong [1 ]
Chen, Minghui [1 ]
Li, Shusuo [5 ]
Wang, Fuhui [1 ]
机构：
[1] Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China
[2] Beihang Univ, Sch Mat Sci & Engn, 37 Xueyuan Rd, Beijing 100191, Peoples R China
[3] Southwest Technol & Engn Res Inst, 115 Fenglin Rd, Chongqing 401329, Peoples R China
[4] Harbin Engn Univ, Yantai Res Inst, Yantai Econ & Technol Dev Area, 1 Qingdao St, Yantai, Shandong, Peoples R China
[5] Beihang Univ, Inst Aero Engine Res, 37 Xueyuan Rd, Beijing 100191, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2023年 / 43卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Yttria oxide stabilized zirconia (YSZ); CMAS; Surface protection; Interface reliability calculation; Failure process; TOP COAT; MICROSTRUCTURE; RESISTANT; DEGRADATION; TEMPERATURE; BEHAVIOR;
D O I：
10.1016/j.jeurceramsoc.2022.11.031
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：
The sol-dip-coating method and surface laser remelting technology are applied to form an Al2O3 layer on a YSZ coating surface to effectively block the environmental sediment CMAS. The behaviour and mechanism for CMAS corrosion of the coating are investigated, and the interfacial reliability of the coating and matrix is calculated by using the Monte Carlo method. The bonding force between the Al2O3 sol and YSZ coating can be effectively improved by laser surface treatment. Samples subjected to a laser pretreatment and posttreatment (YL-AL) of the YSZ coating are found to show the best interfacial bonding strength between Al2O3 and YSZ. Furthermore, the YL-AL sample shows a higher CMAS resistance than the laser posttreatment (Y-AL) samples, which effectively combines the chemical resistance of Al2O3 to CMAS and the physical resistance of the laser re-melted densifi-cation layer against CMAS penetration.
引用
收藏
页码：1567 / 1578
页数：12
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