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Revealing internal corrosion of GH4169 with stress coupled solid NaCl deposited in a humid environment of 600?

Wang, Wenquan1; Cui, Yu2; Liu, Rui1; Liu, Li1; Wang, Fuhui1
Corresponding AuthorLiu, Li(liuli@mail.neu.edu.cn)
2022-02-01
Source PublicationCORROSION SCIENCE
ISSN0010-938X
Volume195Pages:13
AbstractNaCl-deposited specimens of Ni-based superalloy GH4169 have been corroded in a humid environment of 600 ? with elastic stress applied by four-point bending testing. A stress-promoted "active oxidation " mechanism at the internal corrosion zone promotes deeper internal corrosion in an exponential form with external stress. Stress and Cl synergistically change the single corrosion product of Cr2O3 to mixed Cr2O3 and Fe2O3 at internal corrosion tips. Because of increased oxygen vacancy, more oxygen diffuses inward to the internal corrosion zone. Gathered Cl induced by stress participates in the reaction circularly and corrodes metals, leading to the propagation of internal corrosion.
KeywordHigh-temperature corrosion Internal corrosion Elastic stress
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.corsci.2021.110004
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[U20B2026] ; National Natural Science Foundation of China[51871049]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000781381000002
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/172798
Collection中国科学院金属研究所
Corresponding AuthorLiu, Li
Affiliation1.Northeastern Univ, Shenyang Natl Lab Mat Sci, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Wenhua Rd 72, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wang, Wenquan,Cui, Yu,Liu, Rui,et al.

Revealing internal corrosion of GH4169 with stress coupled solid NaCl deposited in a humid environment of 600?

[J]. CORROSION SCIENCE,2022,195:13.
APA Wang, Wenquan,Cui, Yu,Liu, Rui,Liu, Li,&Wang, Fuhui.(2022).

Revealing internal corrosion of GH4169 with stress coupled solid NaCl deposited in a humid environment of 600?

.CORROSION SCIENCE,195,13.
MLA Wang, Wenquan,et al."

Revealing internal corrosion of GH4169 with stress coupled solid NaCl deposited in a humid environment of 600?

".CORROSION SCIENCE 195(2022):13.
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