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Characterization of the Corrosion Product Films Formed on the As-Cast and Friction-Stir Processed Ni-Al Bronze in a 3.5 wt% NaCl Solution
Song, Q. N.1; Zheng, Y. G.1; Ni, D. R.2; Ma, Z. Y.2
Corresponding AuthorZheng, Y. G.(ygzheng@imr.ac.cn)
2015-05-01
Source PublicationCORROSION
ISSN0010-9312
Volume71Issue:5Pages:606-614
AbstractAn as-cast Ni-Al bronze (NAB) was subjected to friction-stir processing (FSP). The friction-stir processed NAB (FSPed NAB) exhibited better corrosion resistance in a 3.5 wt% sodium chloride solution. The corrosion product films formed on the as-cast and FSPed NAB were characterized by scanning electron microscopy (SEM), x-ray diffraction (XRD), and electron probe micro-analysis (EPMA). Uncorroded phases were retained in the films. The interfaces between these phases and their surrounding corrosion products allowed the chloride ions in and reduced the film protectiveness. For the as-cast NAB, the un-corroded phases were large in size or continuous in structure, resulting in continuous interfaces. Therefore, the film on the as-cast NAB exhibited relatively inferior protectiveness. The films on the as-cast and FSPed NAB were similar in composition with mainly copper chloride hydroxide Cu-2(OH)(3)Cl in the outer layer, and Al2O3 and Cu2O with the incorporation of Fe and Ni in the inner layer. Stability of the films in the flowing condition was also studied and a film damage mechanism was raised. In the flowing condition, the film on the as-cast NAB was damaged by crack formation and expansion, while the film on the FSPed NAB was damaged by thinning.
Keywordcorrosion product film EPMA flowing condition friction-stir processing Ni-Al bronze SEM XRD
Funding OrganizationNational Natural Science Foundation of China
DOI10.5006/1391
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51131008]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000355329200005
PublisherNATL ASSOC CORROSION ENG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81084
Corresponding AuthorZheng, Y. G.
Affiliation1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Song, Q. N.,Zheng, Y. G.,Ni, D. R.,et al. Characterization of the Corrosion Product Films Formed on the As-Cast and Friction-Stir Processed Ni-Al Bronze in a 3.5 wt% NaCl Solution[J]. CORROSION,2015,71(5):606-614.
APA Song, Q. N.,Zheng, Y. G.,Ni, D. R.,&Ma, Z. Y..(2015).Characterization of the Corrosion Product Films Formed on the As-Cast and Friction-Stir Processed Ni-Al Bronze in a 3.5 wt% NaCl Solution.CORROSION,71(5),606-614.
MLA Song, Q. N.,et al."Characterization of the Corrosion Product Films Formed on the As-Cast and Friction-Stir Processed Ni-Al Bronze in a 3.5 wt% NaCl Solution".CORROSION 71.5(2015):606-614.
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