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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
Corresponding AuthorWu, X. Q.(xqwu@imr.ac.cn)
2010-09-01
Source PublicationENGINEERING FAILURE ANALYSIS
ISSN1350-6307
Volume17Issue:6Pages:1404-1412
AbstractThis 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.
KeywordCorrosion failure analysis Crevice corrosion Pure Ni High temperature High pressure
Funding OrganizationScience and Technology Foundation of China ; Special Funds for the Major State Basic Research ; Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS)
DOI10.1016/j.engfailanal.2010.04.006
Indexed BySCI
Language英语
Funding ProjectScience 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 Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Mechanical ; Materials Science, Characterization & Testing
WOS IDWOS:000280885100014
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/102729
Collection中国科学院金属研究所
Corresponding AuthorWu, X. Q.
Affiliation1.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
Recommended Citation
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.
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