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Effect of Sodium Dodecyl Sulphate and Sodium Bromide Additives on Ni–W Nanocoatings

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Nickel-tungsten (Ni–W) coatings were fabricated by electrodeposition method with varying quantities of sodium dodecyl sulphate and sodium bromide to examine the effects of the aforesaid additives on the coatings. The obtained nanocoatings were studied by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, and hardness tester. The hardness, tungsten content and grain size attained a maximum value at current density of 0.15 A/cm2,0.1 A/cm2 and 0.1 A/cm2, respectively. There was a pronounced impact of both the additives on the microstructure and morphology of the coatings. According to results, there are considerable difference in terms of the impact caused by the additives to the tungsten content, hardness and grain size of the coatings. The obtained results suggest that hardness of coatings is mainly contributed by W content in the deposits.
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Keywords: Electrodeposition; Ni–W Nanocoatings; SDS; Sodium Bromide

Document Type: Research Article

Affiliations: 1: International Graduate Program of Nanoscience and Technology, Chulalongkorn University, Bangkok 10330, Thailand 2: Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok 10330, Thailand 3: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P.R. China

Publication date: February 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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