| 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 Author | Wu, X. Q.(xqwu@imr.ac.cn) |
| 2010-09-01 | |
| Source Publication | ENGINEERING FAILURE ANALYSIS
 |
| ISSN | 1350-6307 |
| Volume | 17Issue:6Pages:1404-1412 |
| Abstract | 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. |
| Keyword | Corrosion failure analysis Crevice corrosion Pure Ni High temperature High pressure |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Mechanical ; Materials Science, Characterization & Testing |
| WOS ID | WOS:000280885100014 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/102729 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wu, X. Q. |
| Affiliation | 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 |
| 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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