Volume 9, Number 4 (December 2012)                   IJMSE 2012, 9(4): 1-7 | Back to browse issues page


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Z. Shahri, S.R. Allahkaram. EFFECT OF PARTICLES CONCENTRATION AND CURRENT DENSITY ON THE COBALT/HEXAGONAL BORON NITRIDE NANO-COMPOSITE COATINGS PROPERTIES. IJMSE. 2012; 9 (4) :1-7
URL: http://ijmse.iust.ac.ir/article-1-501-en.html

Abstract:   (4979 Views)
Metal matrix composite coatings reinforced with nano-particles have attracted scientific and technological interest due to the enhanced properties exhibited by these coatings. Cobalt/hexagonal boron nitride nano-composite coatings were prepared by means of the pulse current electroplating from a chloride electrolyte on copper substrates and a comparison was made with the pure cobalt in terms of structure and tribological properties. Effects of particles concentration (5-20 gL-1) and current density (50-200 mA cm-2) on the characterization of electroplated coatings were investigated via X-ray diffraction analysis, energy dispersive spectroscopy and Vickers micro-hardness. Moreover, the tribological behavior was studied using pin-on-disc method. The results showed that cobalt/hexagonal boron nitride nano-composite coatings have higher hardness, wear resistance and lower friction coefficient than pure cobalt and the plating parameters strongly affect the coating’s properties
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