Corrosion failure analysis of pure nickel thermocouple sheath used in BaTiO3 hydrothermal synthesis reactor

doi:10.1016/j.engfailanal.2010.04.006

IMR OpenIR

	Corrosion failure analysis of pure nickel thermocouple sheath used in BaTiO3 hydrothermal synthesis reactor
	Zhong, X. Y.1; Wu, X. Q.1; Han, E. H.1; Song, X. B.2
通讯作者	Wu, X. Q.(xqwu@imr.ac.cn)
	2010-09-01
发表期刊	ENGINEERING FAILURE ANALYSIS
ISSN	1350-6307
卷号	17 期号:6 页码:1404-1412
摘要	This paper presents corrosion failure analysis on a commercial pure nickel thermocouple sheath used in BaTiO3 hydrothermal synthesis reactor. Detailed investigations of the corrosion products have been performed using stereomicroscope, X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray spectroscopy. It was found that the corrosion failure of the sheath was mainly due to general corrosion and crevice corrosion of pure nickel, and the main corrosion products were Ni(OH)(2). Many cracks were observed inside the corrosion products and along the interfaces between the corrosion products and metal matrix. BaTiO3 particles were deposited as parallel white bands along the above cracks inside the corrosion products. Chloride ions also entered the cracks or crevices, resulting in the acidification inside the crevice and aggravated the attack of nickel matrix. Some recommendations to prevent/minimize future similar corrosion failures were proposed. (C) 2010 Elsevier Ltd. All rights reserved.
关键词	Corrosion failure analysis Crevice corrosion Pure Ni High temperature High pressure
资助者	Science and Technology Foundation of China ; Special Funds for the Major State Basic Research ; Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS)
DOI	10.1016/j.engfailanal.2010.04.006
收录类别	SCI
语种	英语
资助项目	Science and Technology Foundation of China[50871113] ; Special Funds for the Major State Basic Research[2006CB605001] ; Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS)
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Characterization & Testing
WOS记录号	WOS:000280885100014
出版者	PERGAMON-ELSEVIER SCIENCE LTD
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/321006/102727
专题	中国科学院金属研究所
通讯作者	Wu, X. Q.
作者单位	1.Chinese Acad Sci, State Key Lab Corros & Protect, Inst Met Res, Shenyang 110016, Peoples R China 2.Shandong Sinocera Funct Mat Co Ltd, Dongying 257091, Peoples R China
推荐引用方式 GB/T 7714	Zhong, X. Y.,Wu, X. Q.,Han, E. H.,et al. Corrosion failure analysis of pure nickel thermocouple sheath used in BaTiO3 hydrothermal synthesis reactor[J]. ENGINEERING FAILURE ANALYSIS,2010,17(6):1404-1412.
APA	Zhong, X. Y.,Wu, X. Q.,Han, E. H.,&Song, X. B..(2010).Corrosion failure analysis of pure nickel thermocouple sheath used in BaTiO3 hydrothermal synthesis reactor.ENGINEERING FAILURE ANALYSIS,17(6),1404-1412.
MLA	Zhong, X. Y.,et al."Corrosion failure analysis of pure nickel thermocouple sheath used in BaTiO3 hydrothermal synthesis reactor".ENGINEERING FAILURE ANALYSIS 17.6(2010):1404-1412.