首页|Development of Wear Resistant Nano Dispersed Composite Coating by Electrodeposition

Development of Wear Resistant Nano Dispersed Composite Coating by Electrodeposition

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This study concerns the development of wear resistant coatings of Ni-Al_2O_3 composite on steel substrates by electrodeposition. Each of the coating experiments was performed in an electrolytic bath, containing a nano-sized dispersion of Al_2O_3 particles in nickel sulfate and boric acid solution. Composition of the coating mixture was systematically varied with respect to the contents of the dispersed particles, while the amount of the dissolved nickel sulfate, and boric acid and the applied current were kept constant during the experimental measurements. The coated substrates were characterized for their morphology, Vickers hardness, and scratch resistance properties. It was observed that hardness and scratch resistance of the coated substrates increased with an increase in the Al_2O_3 content in the coating. It was noted that hardness of the composite coating decreased after heat treatment at 400℃ in air atmosphere.

composite coatingselectrodepositionnickelAl_2O_3 particles

R.K. Saha、I.U. Haq、T.I. Khan、L.B. Glenesk

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Hyperion Technologies, Calgary, Alberta, Canada, T2E 7H7

National Centre of Excellence in Physical Chemistry University of Peshawar, Peshawar-25120, NWFP, Pakistan

Department of Mechanical and Manufacturing Engineering University of Calgary, Alberta, Canada, T2N 1N4

2010

Key engineering materials

Key engineering materials

ISSN:1013-9826
年,卷(期):2010.442
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