Effect of h-BN Nanosheets Codeposition on Electrochemical Corrosion Behavior of Electrodeposited Nickel Composite Coatings

Abstract

Nickel matrix composite coatings were successfully fabricated by the incorporation of h-BN (hexagonal boron nitride) nanosheets using the pulse electrodeposition technique. Electrodeposition was carried out by dispersing 5-20 g/L of h-BN nanosheets into the sulfamate electrolytic bath. Composite coatings have shown smooth surface over pure nickel coating. XRD patterns of the composites have shown mixed orientations of crystallites unlike pure nickel which showed preferred (100) orientation. The results demonstrated that the incorporation of h-BN nanosheets into the nickel matrix significantly improves corrosion resistance in 3.5 wt% NaCl solution. (c) 2012 The Electrochemical Society. All rights reserved.