Formation process and oxidation behavior of MCrAlY+AlSiY composite coatings on a Ni-based superalloy

S.M.Li ¹L.B.Fu ¹W.L.Zhang ¹W.Li ²J.Sun ³T.G.Wang ⁴S.M.Jiang ²J.Gong ²C.Sun²

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作者信息

1. School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China;Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
2. Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
3. Advanced Research Institute for Multidisciplinary Science,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China
4. Tianjin Key Laboratory of High Speed Cutting and Precision Machining,Tianjin University of Technology and Education,Tianjin 300222,China
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Abstract

An AlSiY coating and two MCrAlY+AlSiY composite coatings with different thickness of MCrAlY inter-layer were prepared by arc ion plating(AIP)and vacuum annealing.The isothermal oxidation behavior of coatings at 1100℃for 300 h was also investigated to characterize the microstructure evolution of coat-ings during annealing.The composite coatings exhibited a better high-temperature oxidation resistance at 1100℃.The reason is that the addition of MCrAlY layer can greatly contribute to prevent the diffusion of refractory elements to the outer layer.The inhibition of Al inward diffusion can be much stronger,as the Si content increases in the outer layer during annealing.

Key words

Composite coating/Annealing/Arc ion plating/SEM/Oxidation

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基金项目

Tianjin Major Science and Technology Project of Military-Civil Integration(18ZXJMTG00050)

国家科技重大专项(2017-VI-0002-0072)

国家自然科学基金(52001177)

出版年

2022

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量51

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