Behaviour and Mechanisms of Alkali Metal Sulphate-Induced Cyclic Hot Corrosion in Relation to Gradients and Preoxidised MCrAlY-Type Coatings

doi:10.3390/coatings12070912

IMR OpenIR

	Behaviour and Mechanisms of Alkali Metal Sulphate-Induced Cyclic Hot Corrosion in Relation to Gradients and Preoxidised MCrAlY-Type Coatings
	Yu, Daqian 1,2,3; Gong, Jun 2; Sun, Jianping 3; Qian, Yuanji 3
通讯作者	Yu, Daqian(yudq@yuantsing.com)
	2022-07-01
发表期刊	COATINGS
卷号	12 期号:7 页码:16
摘要	In this study, two modified MCrAlY-type coatings were prepared by the same arc ion plating process. 'Gradient annealing' and 'gradient annealing plus preoxidation' were adopted as post-treatments for the two coatings. A two-layer scale of a mixed oxide layer and a pure alumina layer with the alumina next to the substrate was formed on the latter coating. A cyclic hot corrosion test was carried out on them with a conventional MCrAlY-type coating as a reference. The kinetics and evolution of the microstructure showed them to have greater hot corrosion resistance at 900 degrees C. The preformed inner alumina scale by preoxidation retarded the occurrence of internal oxidation-sulphidation to some extent. Additionally, the internal sulphidation-oxidation model is elucidated and extended.
关键词	metal coatings molten salts EPMA hot corrosion initial oxidation
资助者	Jiangsu Industrial Prospect andKeyCore Technology-Competitive Projects
DOI	10.3390/coatings12070912
收录类别	SCI
语种	英语
资助项目	Jiangsu Industrial Prospect andKeyCore Technology-Competitive Projects[BE2019020]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:000832090200001
出版者	MDPI
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/174654
专题	中国科学院金属研究所
通讯作者	Yu, Daqian
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Tsinghua Univ, Wuxi Res Inst Appl Technol, Wuxi 214072, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Yu, Daqian,Gong, Jun,Sun, Jianping,et al. Behaviour and Mechanisms of Alkali Metal Sulphate-Induced Cyclic Hot Corrosion in Relation to Gradients and Preoxidised MCrAlY-Type Coatings[J]. COATINGS,2022,12(7):16.
APA	Yu, Daqian,Gong, Jun,Sun, Jianping,&Qian, Yuanji.(2022).Behaviour and Mechanisms of Alkali Metal Sulphate-Induced Cyclic Hot Corrosion in Relation to Gradients and Preoxidised MCrAlY-Type Coatings.COATINGS,12(7),16.
MLA	Yu, Daqian,et al."Behaviour and Mechanisms of Alkali Metal Sulphate-Induced Cyclic Hot Corrosion in Relation to Gradients and Preoxidised MCrAlY-Type Coatings".COATINGS 12.7(2022):16.