文献类型： 外文期刊

作者： Xia, J. ¹ ; Zhang, L. ³ ; Matsushita, Y. ⁴ ; Wu, R. T. ⁵ ;

作者机构： 1.Hunan Inst Technol, Dept Mech Engn, Hengyang 421002, Hunan, Peoples R China

2.Hunan Acad Agr Sci, Hunan Agr Equipment Res Inst, Changsha 410128, Hunan, Peoples R China

3.Chongqing Univ, Coll Mat Sci & Engn, Int Joint Lab Light Alloys MOE, Chongqing 400044, Peoples R China

4.Natl Inst Mat Sci, Chem Anal & Xray Diffract Grp, 1-2-1 Sengen, Tsukuba, Ibaraki 3050044, Japan

5.Natl Inst Mat Sci, Superalloys & High Temp Mat Grp, 1-2-1 Sengen, Tsukuba, Ibaraki 3050044, Japan

关键词： Ceramic; Molten salts; SEM; TEM; X-ray diffraction; High temperature corrosion

期刊名称：CORROSION SCIENCE （ 影响因子：7.72； 五年影响因子：8.104 ）

ISSN： 0010-938X

年卷期： 2022 年 208 卷

页码：

收录情况： SCI

摘要： Volcanic ash (VA)/calcium-magnesium-alumina-silicate (CMAS) corrosion is a crucial issue causing the failure of thermal barrier coatings. This study focuses on the degradation process of electron-beam physical vapor deposition yttria-stabilized zirconia by natural VA at 1150 degrees C. The phase transformation and chemical reaction during VA attack were measured in real-time by in-situ high-temperature X-ray diffraction. The mechanical properties and the thermal conductivity of the as-deposited and VA corroded coatings were investigated. The correlation between these microstructural changes and the coatings' properties are discussed. The degradation mechanisms are expected to guide the development of potential VA/CMAS mitigation methods.