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Erosion-Corrosion Behavior of Electroless Ni-P Coating on Copper-Nickel Alloy in 3.5 wt.% Sodium Chloride Solution
B. Jiang; S. L. Jiang; A. L. Ma; Y. G. Zheng
2014
Source PublicationJournal of Materials Engineering and Performance
ISSN1059-9495
Volume23Issue:1Pages:230-237
AbstractThe present investigation concerns electroless Ni-P coatings prepared onto the copper-nickel alloy (CuNi 90/10) to enhance the erosion-corrosion resistance. X-ray diffraction technique (XRD), scanning electron microscopy, and electrochemical methods were utilized to study the heat treatment effects on the erosion-corrosion resistance and the physical properties of the coatings. The results indicated that both the as-plated and coating with post-heat treatment (PHT) showed much higher self-passivation ability and much lower current densities than that of the copper-nickel alloy (CuNi 90/10). XRD results showed that both the as-plated and coating with PHT had amorphous structure and the effect of PHT at 190 A degrees C on the structure of Ni-P coating was not significant. Compared with coating with PHT, the as-plated exhibited lower erosion-corrosion resistance due to some small pits and cracks. The coating with PHT demonstrated significant improvement of erosion-corrosion resistance in 3.5 wt.% NaCl solution, which was attributed to better protective film, lower porosity of coatings, and high micro-hardness compared with Ni-P coating without PHT.
description.department[jiang, b. ; jiang, s. l. ; ma, a. l. ; zheng, y. g.] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china. ; jiang, sl (reprint author), chinese acad sci, state key lab corros & protect, inst met res, 62 wencui rd, shenyang 110016, peoples r china. ; sljiang@imr.ac.cn ; ygzheng@imr.ac.cn
KeywordCopper-nickel Alloy Electroless Erosion-corrosion Resistance Heat Treatment Passivity Plating Electrochemical-behavior Composite Coatings Nacl Solutions Seawater Resistance Velocity Cu
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/72483
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
B. Jiang,S. L. Jiang,A. L. Ma,et al. Erosion-Corrosion Behavior of Electroless Ni-P Coating on Copper-Nickel Alloy in 3.5 wt.% Sodium Chloride Solution[J]. Journal of Materials Engineering and Performance,2014,23(1):230-237.
APA B. Jiang,S. L. Jiang,A. L. Ma,&Y. G. Zheng.(2014).Erosion-Corrosion Behavior of Electroless Ni-P Coating on Copper-Nickel Alloy in 3.5 wt.% Sodium Chloride Solution.Journal of Materials Engineering and Performance,23(1),230-237.
MLA B. Jiang,et al."Erosion-Corrosion Behavior of Electroless Ni-P Coating on Copper-Nickel Alloy in 3.5 wt.% Sodium Chloride Solution".Journal of Materials Engineering and Performance 23.1(2014):230-237.
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