Outstanding molten calcium-magnesium-aluminosilicate (CMAS) corrosion resistance of directionally solidified Al2O3/Y3Al5O12 eutectic ceramic at 1500 °C

被引：18

作者：

Sun, Haofei ^{[1
,2
]}

Sun, Luchao ^{[1
]}

Ren, Xiaomin ^{[1
,3
]}

Zhou, Cui ^{[1
,3
]}

Li, Jie ^{[1
,3
]}

Du, Tiefeng ^{[1
]}

Liu, Jing ^{[2
]}

Wang, Jingyang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[2] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada

[3] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 220卷

基金：

中国国家自然科学基金;

关键词：

Directionally solidified eutectic; Calcium-magnesium-aluminosilicate (CMAS); Corrosion; MECHANICAL-PROPERTIES; PART I; STABILITY; COATINGS; AL2O3/ER3AL5O12; DEGRADATION; TEMPERATURE; COMPOSITE; BEHAVIOR; PROGRESS;

D O I：

10.1016/j.corsci.2023.111289

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper explored the calcium-magnesium-aluminosilicate (CMAS) corrosion resistance of Al2O3/ Y3Al5O12(YAG) directionally solidified eutectic (DSE) at 1500 & DEG;C for 4-100 h and disclosed the reaction process dominated by dissolution, precipitation, and in-situ growth and densification mechanisms. The recession depth of Al2O3/YAG DSE after corrosion at 1500 & DEG;C for 100 h is approximately 130 & mu;m, indicating its outstanding CMAS corrosion resistance among competing high temperature materials. The current result highlights the strategy to in-situ initiation of protective dense layer against CMAS corrosion and inspires the design of new high temperature structural components or environmental barrier coating in turbine engine.

引用

页数：10

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