Effect of Reverse Pulse Current Duration on the Corrosion and Wear Performance of Ni-W Nanolaminate Coatings
The effects of varying the reverse pulse current duration (τ = 0 s, 1 s, 5 s, and 10 s) were evaluated on the composition, crystallinity, hardness, corrosion resistance, and tribological performance of nanolaminate Ni-W coatings deposited by pulsed reverse current electrodeposition. With the deposition conditions used in this study, it was found that a reverse current duration of τ = 1 s produced a coating that was both highly corrosion resistant and wear resistant.
We would like to thank The Timken Company for sponsoring this project. We also thank Dr. Hernandez (NCERCAMP, University of Akron) and Mr. Thomas White (Geology Department, University of Akron) for helping us with the SEM and EDS analysis. Mr. Cowen and Mr. Danqi at Case Western Reserve University (CWRU), and Mr. Robert Pendergrass are acknowledged for their help with the XRD, TEM, and FIB studies, respectively. The authors would also like to thank Mr. Fouts and Mr. Strahin for their valuable input on this article.
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