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Effect of YSZ-incorporated glass-based composite coating on oxidation behavior of K438G superalloy at 1000(circle)C
Wang, Xin; Zhu, Shenglong; Gu, Ziwei; Chen, Minghui; Wang, Fuhui; Wang, X (reprint author), Northwest Inst Nonferrous Met Res, Xian 710016, Peoples R China.
2017-03-01
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Volume37Issue:3Pages:1013-1022
AbstractA glass-based composite coating incorporating YSZ particles was prepared by sintering on K438G superalloy substrates. The YSZ additions increased the cyclic oxidation resistance at 1000(circle)C, while the formation of zircon resulting from interfacial reactions between YSZ and the glass matrix worked reversely. Besides, the YSZ inclusions changed the crystallization behavior of the glass matrix, and only anorthite precipitated during cyclic oxidation. Due to the synergy of sand-blasting and sealing effect of the glass-based coating, the oxidation behavior of K438G was changed and a layer of alumina instead of chromia formed at the substrate/coating interface. Furthermore, a gahnite layer formed at the alumina/gahnite interface because of interfacial reactions between alumina and the glass matrix, leading to the formation of a bilayered thermally grown oxide. Thus, the alumina layer was protected from the attack of the active glass matrix. Accordingly, the coated K438G superalloy exhibited satisfactory oxidation resistance at 1000(circle)C. (C) 2016 Elsevier Ltd. All rights reserved.; A glass-based composite coating incorporating YSZ particles was prepared by sintering on K438G superalloy substrates. The YSZ additions increased the cyclic oxidation resistance at 1000(circle)C, while the formation of zircon resulting from interfacial reactions between YSZ and the glass matrix worked reversely. Besides, the YSZ inclusions changed the crystallization behavior of the glass matrix, and only anorthite precipitated during cyclic oxidation. Due to the synergy of sand-blasting and sealing effect of the glass-based coating, the oxidation behavior of K438G was changed and a layer of alumina instead of chromia formed at the substrate/coating interface. Furthermore, a gahnite layer formed at the alumina/gahnite interface because of interfacial reactions between alumina and the glass matrix, leading to the formation of a bilayered thermally grown oxide. Thus, the alumina layer was protected from the attack of the active glass matrix. Accordingly, the coated K438G superalloy exhibited satisfactory oxidation resistance at 1000(circle)C. (C) 2016 Elsevier Ltd. All rights reserved.
description.department[wang, xin ; gu, ziwei] northwest inst nonferrous met res, xian 710016, peoples r china ; [zhu, shenglong ; chen, minghui ; wang, fuhui] chinese acad sci, inst met res, shenyang 110016, peoples r china
KeywordSuperalloy Glass-based Coating Ysz Oxidation Microstructural Evolution
Subject AreaMaterials Science, Ceramics
Funding OrganizationNational High Technology Research and Development Program of China (863 Program) [2012AA03A512]; National Key Basic Research Program of China (973Program) [2012CB625100]; National Natural Science Foundation of China [51501155]; Natural Science Foundation of Shaanxi Province, China [2016JM5045]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78279
Collection中国科学院金属研究所
Corresponding AuthorWang, X (reprint author), Northwest Inst Nonferrous Met Res, Xian 710016, Peoples R China.
Recommended Citation
GB/T 7714
Wang, Xin,Zhu, Shenglong,Gu, Ziwei,et al. Effect of YSZ-incorporated glass-based composite coating on oxidation behavior of K438G superalloy at 1000(circle)C[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2017,37(3):1013-1022.
APA Wang, Xin,Zhu, Shenglong,Gu, Ziwei,Chen, Minghui,Wang, Fuhui,&Wang, X .(2017).Effect of YSZ-incorporated glass-based composite coating on oxidation behavior of K438G superalloy at 1000(circle)C.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,37(3),1013-1022.
MLA Wang, Xin,et al."Effect of YSZ-incorporated glass-based composite coating on oxidation behavior of K438G superalloy at 1000(circle)C".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 37.3(2017):1013-1022.
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