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Current research
Surface-mechanical properties of electrodeposited Cu-Al2O3 composite coating and effects of processing parameters, H. S. Maharana, Akarapu Ashok, S. Pal, A. Basu, Department of Metallurgical and Materials Engineering

I
n the present study Cu/Al2O3 composite coatings were synthesized from acidic copper sulfate bath containing ultrafine Al2O3 particles by direct current (DC) plating method to increase the surface mechanical property of Cu for its possible use as electrical contact. Effect of ultrafine Al2O3 particle concentration in
electrolyte and deposition current density on the surface mechanical properties of the coatings was investigated. Improved hardness and wear property of the resultant coatings were observed and was correlated with the wt.% of ultrafine particle in the Cu matrix, matrix structure and crystallographic orientation. Electrical conductivity of the coating was affected by grain size and second phase concentration and the values obtained were in the usable range required for electrical applications. More in: link.springer.com/article/10.1007/s11661-015-3238-0 (List of Research)

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