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Author Rameshbapu, G. N. K. ♦ Thiruchelvam, T.
Source CSIR-Central Electrochemical Research Institute
Content type Text
Publisher Central Electrochemical Research Institute
File Format PDF
Copyright Year ©2001
Language English
Subject Domain (in DDC) Technology ♦ Chemical engineering
Subject Keyword Industrial Metal Finishing
Abstract Electrodeposited composite coatings enhance one or more of the properties of the substrate or confer an entirely new property. The use of metals like copper, nickel, cobalt, etc., as matrix makes possible the use of composites at elevated temperatures. In this investigation cobalt-boron nitride (Co-BN) composites were produced by conventional electrodeposition methods using a cobalt sulfate bath containing boron nitride (BN) particles in suspension. The effects of BN particle concentration in the bath, current density, pH and temperature on volume percent (Vol. %) incorporation of BN particles in the composites were investigated and the optimum conditions were found. Corrosion behaviour of the Co-BN composite was studied in 5% NaCl and 1 M HCl solutions by galvanostatic polarization method and the results were compared with those of cobalt deposits. From the resulting polarization curves, the corrosion potential and the corrosion current were obtained. Surface topography of Co and Co-BN composite was also studied
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2001-01-01
Journal PeerReviewed