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Corrosion and Cavitation Erosion Behaviours of Cast Nickel Aluminium Bronze in 3.5% NaCl Solution with Different Sulphide Concentrations
Song, Qi-Ning1; Xu, Nan1; Tong, Yao1; Huang, Chen-Ming1; Sun, Shou-Yu1; Xu, Chen-Bo1; Bao, Ye-Feng1; Jiang, Yong-Feng1; Qiao, Yan-Xin2; Zhu, Zhi-Yuan2; Wang, Zheng-Bin3
Corresponding AuthorSong, Qi-Ning(qnsong@hhu.edu.cn)
2019-12-01
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume32Issue:12Pages:1470-1482
AbstractThe effect of sulphide (Na2S) concentration (SC) on the corrosion and cavitation erosion behaviours of a cast nickel aluminium bronze (NAB) in 3.5% NaCl solution is investigated in this study. The results show that when the SC exceeds 50 ppm, the hydrogen evolution reaction dominates the cathodic process, and a limiting current region appears in the anodic branch of the polarisation curve due to the formation of a copper sulphide film, which is a diffusion-controlled process. After long-term immersion, the increased mass loss rate of NAB with the sulphide additions of 20 and 50 ppm is attributed to the less protective films, which contains a mixture of copper oxides and sulphides. Moreover, NAB undergoes severe localised corrosion (selective phase corrosion, SPC) at the beta ' phases and eutectoid microstructure alpha + kappa(III). By comparison, NAB undergoes general corrosion and a copper sulphide film is formed in 100 and 200 ppm sulphide solutions. Cavitation erosion greatly increases the corrosion rate of NAB in all solutions and causes a negative potential shift in 3.5% NaCl solution due to the film destruction. However, a positive potential shift occurs in the solutions with SC higher than 50 ppm due to the accelerated mass transfer of the cathodic process. The cavitation erosion mass loss rate of NAB increases with the increase of SC. The occurrence of severe SPC decreases the phase boundary cohesion and causes brittle fracture under the cavitation impact. The corrosion-enhanced erosion is the most predominant factor for the cavitation erosion damage when the SC exceeds 50 ppm.
KeywordNickel aluminium bronze Sulphide Corrosion Cavitation erosion Synergy
Funding OrganizationNational Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities of P.R. China ; Natural Science Foundation of Jiangsu Province ; Changzhou Sci Tech Program ; first group of 2011 plan of China's Jiangsu province (Cooperative Innovational Center for Coastal Development Protection)
DOI10.1007/s40195-019-00963-7
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51601058] ; National Natural Science Foundation of China[51879089] ; Fundamental Research Funds for the Central Universities of P.R. China[2018B59614] ; Natural Science Foundation of Jiangsu Province[BK20191161] ; Changzhou Sci Tech Program[CJ20180045] ; first group of 2011 plan of China's Jiangsu province (Cooperative Innovational Center for Coastal Development Protection)[[2013] 56]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000493679100002
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/136961
Collection中国科学院金属研究所
Corresponding AuthorSong, Qi-Ning
Affiliation1.Hohai Univ, Coll Mech & Elect Engn, 200 Jinling North Rd, Changzhou 213022, Peoples R China
2.Jiangsu Univ Sci & Technol, Coll Mat Sci & Engn, 2 Mengxi Rd, Zhenjiang 212003, Jiangsu, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 62 Wencui Rd, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Song, Qi-Ning,Xu, Nan,Tong, Yao,et al. Corrosion and Cavitation Erosion Behaviours of Cast Nickel Aluminium Bronze in 3.5% NaCl Solution with Different Sulphide Concentrations[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2019,32(12):1470-1482.
APA Song, Qi-Ning.,Xu, Nan.,Tong, Yao.,Huang, Chen-Ming.,Sun, Shou-Yu.,...&Wang, Zheng-Bin.(2019).Corrosion and Cavitation Erosion Behaviours of Cast Nickel Aluminium Bronze in 3.5% NaCl Solution with Different Sulphide Concentrations.ACTA METALLURGICA SINICA-ENGLISH LETTERS,32(12),1470-1482.
MLA Song, Qi-Ning,et al."Corrosion and Cavitation Erosion Behaviours of Cast Nickel Aluminium Bronze in 3.5% NaCl Solution with Different Sulphide Concentrations".ACTA METALLURGICA SINICA-ENGLISH LETTERS 32.12(2019):1470-1482.
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