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The Scientific World JournalVolume 2013 2013, Article ID 631936, 6 pages

Research ArticleFaculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Malaysia

Received 8 May 2013; Accepted 11 July 2013

Academic Editors: L. Nobile and S. Torii

Copyright © 2013 Hassan A. Wahab et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Electroplated nickel coating on cemented carbide is a potential pretreatment technique for providing an interlayer prior to diamond deposition on the hard metal substrate. The electroplated nickel coating is expected to be of high quality, for example, indicated by having adequate thickness and uniformity. Electroplating parameters should be set accordingly for this purpose. In this study, the gap distances between the electrodes and duration of electroplating process are the investigated variables. Their effect on the coating thickness and uniformity was analyzed and quantified using design of experiment. The nickel deposition was carried out by electroplating in a standard Watt’s solution keeping other plating parameters current: 0.1 Amp, electric potential: 1.0 V, and pH: 3.5 constant. The gap distance between anode and cathode varied at 5, 10, and 15 mm, while the plating time was 10, 20, and 30 minutes. Coating thickness was found to be proportional to the plating time and inversely proportional to the electrode gap distance, while the uniformity tends to improve at a large electrode gap. Empirical models of both coating thickness and uniformity were developed within the ranges of the gap distance and plating time settings, and an optimized solution was determined using these models.





Autor: Hassan A. Wahab, M. Y. Noordin, S. Izman, and Denni Kurniawan

Fuente: https://www.hindawi.com/



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