High temperature performance and interface evolution of a NiCoCrAlY coating with Pt modification and Re-based diffusion barrier

doi:10.1016/j.surfcoat.2023.129510

IMR OpenIR

	High temperature performance and interface evolution of a NiCoCrAlY coating with Pt modification and Re-based diffusion barrier
	Xu, M. M.1; Li, S.2; Dong, Z. H.1,2; Liu, H.2,3; Wang, J. M.4; Bao, Z. B.1,2; Zhu, S. L.1,2; Wange, F. H.5
通讯作者	Bao, Z. B.(zbbao@imr.ac.cn)
	2023-06-25
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	463 页码:12
摘要	The cyclic and early isothermal oxidation behaviors at 1050 C of the NiCoCrAlY, Pt-modified NiCoCrAlY and Ptmodified NiCoCrAlY with Re-based diffusion barrier (DB) have been evaluated. The atomic immigration and electron location function (ELF) at the Ni-Re interface were simulated by density function theory (DFT) calculations. After isothermal oxidation for 1 h, island NiCoCrAlY particles with extremely poor Al were observed in the oxide scale of normal NiCoCrAlY coating, and then the oxide scale transformed into a double-layer structure after oxidation for 20 h. The initial "island-oxide" scale model was proposed to illustrate the oxidation mechanisms for normal NiCoCrAlY coating. The oxide scale of Pt-modified NiCoCrAlY coating was single-layer Al2O3 with rapid coverage at the surface, because the modification of Pt changed the initial oxidation mechanism by promoting the uphill diffusion of Al. The Re-based DB reduced the thickness of the secondary reaction zone (SRZ) by inhibiting the element interdiffusion between the NiCoCrAlY coating and the substrate, thus the Pt-modified NiCoCrAlY with Re-based DB exhibited the lowest interdiffusion extent. Interestingly, the thermal stability of Rebased DB in NiCoCrAlY coating system was poorer than that in NiCrAlY system. The DFT simulation shows that the incorporation of Co made the energy difference more negative, which confirmed that Co promoted the diffusion of Re in the NiCoCrAlY coating, thus accelerating the degradation of Re-based DB.
关键词	Superalloy NiCoCrAlY coating Diffusion barrier Pt -modification Oxidation
资助者	National Natural Science Foundation of China ; National Science and Technology Major Project ; Graduate Innovation Research Project of the Institute of Metal Research ; Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; Key Research Program of the Chinese Academy of Sciences
DOI	10.1016/j.surfcoat.2023.129510
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[52101090] ; National Science and Technology Major Project ; Graduate Innovation Research Project of the Institute of Metal Research ; Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; Key Research Program of the Chinese Academy of Sciences ; [J2019-IV-0006-0074] ; [1193002090] ; [2022M712200] ; [ZDRW-CN-2021-2-2]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:000988760800001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：5[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/321006/178001
专题	中国科学院金属研究所
通讯作者	Bao, Z. B.
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, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Wencui Rd 62, Shenyang 110016, Peoples R China 3.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Peoples R China 4.Chinese Acad Sci, Inst Met Res, High performance Ceram Div, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China 5.Northeastern Univ, Shenyang Natl Lab Mat Sci, Wenhua Rd 3, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Xu, M. M.,Li, S.,Dong, Z. H.,et al. High temperature performance and interface evolution of a NiCoCrAlY coating with Pt modification and Re-based diffusion barrier[J]. SURFACE & COATINGS TECHNOLOGY,2023,463:12.
APA	Xu, M. M..,Li, S..,Dong, Z. H..,Liu, H..,Wang, J. M..,...&Wange, F. H..(2023).High temperature performance and interface evolution of a NiCoCrAlY coating with Pt modification and Re-based diffusion barrier.SURFACE & COATINGS TECHNOLOGY,463,12.
MLA	Xu, M. M.,et al."High temperature performance and interface evolution of a NiCoCrAlY coating with Pt modification and Re-based diffusion barrier".SURFACE & COATINGS TECHNOLOGY 463(2023):12.