Surface corrosion behavior of (3-(Ni,Pt)Al coating: α-Al2O3 decohesion-induced failure mechanism

doi:10.1016/j.apsusc.2024.160548

IMR OpenIR

	Surface corrosion behavior of (3-(Ni,Pt)Al coating: α-Al2O3 decohesion-induced failure mechanism
	Jiang, Yiming 1,2; Li, Shuai 2; Huang, Di 1,2; Bao, Zebin 1,2; Wang, Jiemin 1,3; Zhu, Shenglong 1,2; Wang, Fuhui 4
通讯作者	Bao, Zebin(zbbao@imr.ac.cn) ; Wang, Jiemin(jieminwang@imr.ac.cn)
	2024-10-01
发表期刊	APPLIED SURFACE SCIENCE
ISSN	0169-4332
卷号	669 页码:12
摘要	In marine and gas turbine environments, impurities like hydrogen (H), sulfur (S) and chlorine (Cl) ions frequently impact continuity and integrity of the oxide scale of Pt-modified aluminide coating. This study systematically investigated the segregation behavior of these impurities using first-principles calculations, to reveal their weakening potency on both alpha-Al2O3 bulk and grain boundary (GB). The energetic properties, including separation work, surface energy and GB energy, are strongly associated with existing form of impurities. The interstitial S and Cl atoms are particularly intensive in reducing cohesion of alpha-Al2O3 in comparison with solute state. The single-atom S- and Cl-doping with S and Cl have similar effects on the embrittlement of alpha-Al2O3 bulk/ GB, and the Cl-introduction exhibits extreme brittleness once the atomic concentration increases. Interestingly, single H-addition has no significant effect on the alpha-Al2O3 decohesion, while its weakening potency on alpha-Al2O3 is further enhanced upon contacting with S and Cl atoms. Therefore, we decomposed strengthening energy into mechanical contribution and chemical contribution, finding that the incorporation of H increases the chemical contribution to decohesion of alpha-Al2O3. This work, along with initial corrosion behavior of various (Ni,Pt)Al coatings, aims to deepen understanding of H, S and Cl on alpha-Al2O3 decohesion from multiple perspectives.
关键词	Pt-modified aluminide coating alpha-Al 2 O 3 decohesion Impurity segregation Embrittlement First-principles calculations
资助者	National Natural Science Foundation of China ; Fundamental Science Center for Aviation and Gas Turbine Engines ; National Science and Technology Major Project ; Key Research Program of the Chinese Academy of Sciences
DOI	10.1016/j.apsusc.2024.160548
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51671202] ; National Natural Science Foundation of China[52301116] ; Fundamental Science Center for Aviation and Gas Turbine Engines[P2021-A-IV-002-001] ; National Science and Technology Major Project[J2019-IV-0006-0074] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-2]
WOS研究方向	Chemistry ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001339195600001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191004
专题	中国科学院金属研究所
通讯作者	Bao, Zebin; Wang, Jiemin
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Wenhua Rd 72, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Wencui Rd 62, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China 4.Northeastern Univ, Shenyang Natl Lab Mat Sci, Wenhua Rd 3, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Yiming,Li, Shuai,Huang, Di,et al. Surface corrosion behavior of (3-(Ni,Pt)Al coating: α-Al2O3 decohesion-induced failure mechanism[J]. APPLIED SURFACE SCIENCE,2024,669:12.
APA	Jiang, Yiming.,Li, Shuai.,Huang, Di.,Bao, Zebin.,Wang, Jiemin.,...&Wang, Fuhui.(2024).Surface corrosion behavior of (3-(Ni,Pt)Al coating: α-Al2O3 decohesion-induced failure mechanism.APPLIED SURFACE SCIENCE,669,12.
MLA	Jiang, Yiming,et al."Surface corrosion behavior of (3-(Ni,Pt)Al coating: α-Al2O3 decohesion-induced failure mechanism".APPLIED SURFACE SCIENCE 669(2024):12.