Effect of oxide layer on the electrochemical corrosion behavior of a Ni-based superalloy in 3.5 wt% NaCl

doi:10.1016/j.ijoes.2023.100310

IMR OpenIR

	Effect of oxide layer on the electrochemical corrosion behavior of a Ni-based superalloy in 3.5 wt% NaCl
	Wang, Yuemiao 1,2; Yang, Yanhong 2; Qu, Jinglong 3; Cui, Limin 4; Cui, Chuanyong 2
通讯作者	Yang, Yanhong(yhyang@imr.ac.cn) ; Cui, Chuanyong(chycui@imr.ac.cn)
	2023-10-01
发表期刊	INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
ISSN	1452-3981
卷号	18 期号:10 页码:11
摘要	The recycle technology of superalloy is a research hotspot and difficulty in the filed of superalloy. Recovery of superalloy bulk material is a major focus. Purification smelting after surface impurity removal is an application trend of superalloy regeneration technology. During the use and processing of superalloy, the surface will form a dense oxide layer. The oxide layer of superalloy scrap is difficult to remove by traditional mechanical method. However, the oxide layer on the superalloy surface can be efficiently removed by electrochemical dissolution. Based on the background above, we investigated the electrochemical corrosion behavior of GH4738 superalloy which oxidized for different time in 3.5 wt% NaCl. The effect of oxide layer on the electrochemical corrosion behavior of GH4738 was studied by potentiodynamic polarization and electrochemical impendence spectroscopy (EIS). The morphology and phase composition of the alloy were analyzed by scanning electron microscope (SEM), electron probe X-ray Micro-Analyzer (EPMA) and X-ray diffraction (XRD). The results indicated that the dense oxide film not only has a protective effect on the oxidation corrosion of the alloy, but also has a protective effect on the electrochemical corrosion of the alloy. The oxide layer impedes the electrochemical dissolution of the alloy.
关键词	Superalloy Oxidation Electrochemical corrosion Mixed -oxides scale
资助者	National Key R & D Pro- gram of China ; National Science and Technology Major Project
DOI	10.1016/j.ijoes.2023.100310
收录类别	SCI
语种	英语
资助项目	National Key R & D Pro- gram of China[2021YFB3700401] ; National Science and Technology Major Project[Y2019 -VII -0011-0151]
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
WOS记录号	WOS:001087292400001
出版者	ELSEVIER
引用统计	被引频次：2[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/321006/177960
专题	中国科学院金属研究所
通讯作者	Yang, Yanhong; Cui, Chuanyong
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.Beijing CISRI Gaona Mat & Technol Co Ltd, Beijing 10081, Peoples R China 4.Zhonghang Shangda Superalloys Co Ltd, Xingtai 054800, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yuemiao,Yang, Yanhong,Qu, Jinglong,et al. Effect of oxide layer on the electrochemical corrosion behavior of a Ni-based superalloy in 3.5 wt% NaCl[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2023,18(10):11.
APA	Wang, Yuemiao,Yang, Yanhong,Qu, Jinglong,Cui, Limin,&Cui, Chuanyong.(2023).Effect of oxide layer on the electrochemical corrosion behavior of a Ni-based superalloy in 3.5 wt% NaCl.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,18(10),11.
MLA	Wang, Yuemiao,et al."Effect of oxide layer on the electrochemical corrosion behavior of a Ni-based superalloy in 3.5 wt% NaCl".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 18.10(2023):11.