Electrochemical Behavior of Three 90Cu-10Ni Tubes from Different Manufacturers After Immersion in 3.5% NaCl Solution

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	Electrochemical Behavior of Three 90Cu-10Ni Tubes from Different Manufacturers After Immersion in 3.5% NaCl Solution
	Ekerenam, Okpo O.; Ma, Aili; Zheng, Yugui; Emori, Wilfred; Ma, AL (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 62 Wencui Rd, Shenyang 110016, Peoples R China.
	2017-04-01
发表期刊	JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN	1059-9495
卷号	26 期号:4 页码:1701-1716
摘要	Investigation on the electrochemical behavior and corrosion product films formed on three 90Cu-10Ni tubes designated as Tubes A, B and C from three different manufacturers with different service lives were carried out using electrochemical techniques, SEM, XRD and XPS after immersion in 3.5 wt.% NaCl solution. The results of polarization curve measurements showed noticeable decrease in the corrosion current densities (I (corr)) of the three tubes with immersion time, and the I (corr) of Tube C was comparatively lower than those of Tubes A and B at early immersion period. EIS measurements revealed duplex film layers on the surface of the samples with the inner film formation occurring at different times for different tubes as the film resistance R (f2) revealed the formation of the inner compact layer in Tube C after 15-day immersion and in Tubes A and B after 30 days. Tube C showed better corrosion resistance which is due to early formation of the inner compact oxide film. The XPS analysis revealed Ni enrichment on the surface film of the three samples but Ni depletion as the immersion time is increased.; Investigation on the electrochemical behavior and corrosion product films formed on three 90Cu-10Ni tubes designated as Tubes A, B and C from three different manufacturers with different service lives were carried out using electrochemical techniques, SEM, XRD and XPS after immersion in 3.5 wt.% NaCl solution. The results of polarization curve measurements showed noticeable decrease in the corrosion current densities (I (corr)) of the three tubes with immersion time, and the I (corr) of Tube C was comparatively lower than those of Tubes A and B at early immersion period. EIS measurements revealed duplex film layers on the surface of the samples with the inner film formation occurring at different times for different tubes as the film resistance R (f2) revealed the formation of the inner compact layer in Tube C after 15-day immersion and in Tubes A and B after 30 days. Tube C showed better corrosion resistance which is due to early formation of the inner compact oxide film. The XPS analysis revealed Ni enrichment on the surface film of the three samples but Ni depletion as the immersion time is increased.
部门归属	[ekerenam, okpo o. ; ma, aili ; zheng, yugui ; emori, wilfred] chinese acad sci, inst met res, key lab nucl mat & safety assessment, 62 wencui rd, shenyang 110016, peoples r china
关键词	Corrosion And Wear Corrosion Product Film Eis Nonferrous Metals Oxidation Polarization Curves Xps
学科领域	Materials Science, Multidisciplinary
资助者	National Natural Science Foundation of China [Y7F2131111]; National Environmental Corrosion Platform [2005DKA10400]
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78205
专题	中国科学院金属研究所
通讯作者	Ma, AL (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 62 Wencui Rd, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Ekerenam, Okpo O.,Ma, Aili,Zheng, Yugui,et al. Electrochemical Behavior of Three 90Cu-10Ni Tubes from Different Manufacturers After Immersion in 3.5% NaCl Solution[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2017,26(4):1701-1716.
APA	Ekerenam, Okpo O.,Ma, Aili,Zheng, Yugui,Emori, Wilfred,&Ma, AL .(2017).Electrochemical Behavior of Three 90Cu-10Ni Tubes from Different Manufacturers After Immersion in 3.5% NaCl Solution.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,26(4),1701-1716.
MLA	Ekerenam, Okpo O.,et al."Electrochemical Behavior of Three 90Cu-10Ni Tubes from Different Manufacturers After Immersion in 3.5% NaCl Solution".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 26.4(2017):1701-1716.