Coating a copper sample by Ni-Sic composite coating and studying its corrosion behavior

Abstract

The electroplating of Ni-SiC composite coatings was conducted by submerging a brass substrate in a nickel sulfate solution with a SiC suspension. The composite coatings and brass substrate were evaluated for corrosion behaviour by generating Tafel curves in a 3.5% NaCl solution at room temperature. The composite electrolyte exhibited a greater cathodic polarization potential compared to the Cu substrate. The wear characteristics of the Ni coating, Cu substrate, and Ni-SiC composite coating made with an HT-8360 rotary disk were investigated in a study. Furthermore, the SiC nanoparticles co-deposited with Ni showed a homogeneous distribution within the Ni-SiC matrix. Consequently, there was a noticeable improvement in the Ni-SiC composite coating's microhardness and wear resistance.AT The salt spray experiments were performed in a salt spray fog chamber, following the specifications outlined in ASTM-B-117. Changes in adhesion and blister formation, as well as those associated with corrosion, were examined.Photographs of the specimens, which had been coated with a protective layer, were taken after the salt spray test. The percentage is a vital indication that precisely reflects the degree of corrosion resistance demonstrated by a coated specimen. There is no indication of corrosion