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Surface Characterization and Corrosion Behavior of 90/10 Copper-Nickel Alloy in Marine Environment

School of Reliability and Systems Engineering, Beihang University, Beijing 100191, China
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Materials 2019, 12(11), 1869; https://doi.org/10.3390/ma12111869
Received: 16 May 2019 / Revised: 5 June 2019 / Accepted: 6 June 2019 / Published: 10 June 2019
(This article belongs to the Section Structure Analysis and Characterization)
Surface characterization and corrosion behavior of 90/10 copper-nickel alloy in seawater from Xiamen bay at 30 °C for 56 days were investigated in this study. The results indicated that the corrosion product layer was mainly a mixture of CuO, Cu2O, and Cu(OH)2, with a transition to CuCl, CuCl2, and Cu2(OH)3Cl during the corrosion process. However, as corrosion proceeds, the resistance of the product film was reduced due to its heterogeneous and fairly porous structures, which led to local corrosion of the alloy. The corrosion potentials (Ecorr) increase while corrosion current densities (Icorr) decrease with time because of the formation of protective oxide film. View Full-Text
Keywords: 90/10 Cu-Ni alloy; marine environment; passive films; surface characterization; corrosion behavior 90/10 Cu-Ni alloy; marine environment; passive films; surface characterization; corrosion behavior
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Jin, T.; Zhang, W.; Li, N.; Liu, X.; Han, L.; Dai, W. Surface Characterization and Corrosion Behavior of 90/10 Copper-Nickel Alloy in Marine Environment. Materials 2019, 12, 1869.

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