Grain-boundary corrosion of nickel-based alloy by synchrotron radiation technology

doi:10.1680/jsuin.19.00019

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Grain-boundary corrosion of nickel-based alloy by synchrotron radiation technology
	Luo, M ; Liang, ZF ; Jia, YY ; Ye, XX ; Yan, S ; Xia, XH ; Wang, LH ; Li, ZJ ; Jiang, Z
刊名	SURFACE INNOVATIONS
	2019
卷号	7 期号:5 页码:278-283
关键词	TELLURIUM CORROSION
ISSN号	2050-6252
DOI	10.1680/jsuin.19.00019
文献子类	期刊论文
英文摘要	The spatial distribution and chemical speciation of tellurium (Te) at the grain boundary (GB) of nickel (Ni)-based alloys are crucial for investigating the tellurium corrosion mechanism. In this work, corrosion products along GBs were investigated by synchrotron-radiation-based microprobe techniques, including micro-X-ray fluorescence, micro-X-ray diffraction and micro-X-ray absorption near-edge structure (mu-XANES), for the first time. A gradually decreasing tendency in the concentration of tellurium from the GB area into the grains was identified, together with the presence of GB corrosion products in the form of nickel telluride (Ni3Te2), as well as nickel-tellurium solid solution. Moreover, both the mu-XANES results and density functional theory results confirmed that the impurity tellurium atoms in the nickel-tellurium solid solution tend to bond with their neighboring nickel atoms through weak covalent interactions, due to the hybrid state of tellurium 2p-nickel 4s. Such an unstable antibonding character from the nickel-tellurium combination is believed to play a key role in weakening the structural stability of nickel-based alloys. The efficient analysis of the tellurium corrosion mechanism based on these feasible synchrotron radiation characterizations will inspire more pertinent experimental investigations.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32073]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou, Zhejiang, Peoples R China 2.Chinese Acad Sci, Ctr Thorium Molten Salts Reactor Syst, Shanghai Inst Appl Phys, Shanghai, Peoples R China; 3.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai, Peoples R China; 4.Univ Chinese Acad Sci, Beijing, Peoples R China; 5.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai, Peoples R China; 6.Zhejiang Univ, State Key Lab Silicon Mat, Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, Hangzhou, Zhejiang, Peoples R China;
推荐引用方式 GB/T 7714	Luo, M,Liang, ZF,Jia, YY,et al. Grain-boundary corrosion of nickel-based alloy by synchrotron radiation technology[J]. SURFACE INNOVATIONS,2019,7(5):278-283.
APA	Luo, M.,Liang, ZF.,Jia, YY.,Ye, XX.,Yan, S.,...&Jiang, Z.(2019).Grain-boundary corrosion of nickel-based alloy by synchrotron radiation technology.SURFACE INNOVATIONS,7(5),278-283.
MLA	Luo, M,et al."Grain-boundary corrosion of nickel-based alloy by synchrotron radiation technology".SURFACE INNOVATIONS 7.5(2019):278-283.