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

Yoonis A.M.   Esham; Ali F .Ali FADIEL; Moktar A. Hashem  Mohamad; Hafiez M.B.  Khalid

Authors

Yoonis A.M. Esham Department of Mechanical Engineering, Higher Institute for Sciences and Technology, Tobruk, Libya
Ali F .Ali FADIEL Department of Mechanical Engineering, Higher Institute for Sciences and Technology, Tobruk, Libya https://orcid.org/0009-0004-4066-1011
Moktar A. Hashem Mohamad Department of Mechanical Engineering, Higher Institute for Sciences and Technology, Tobruk, Libya
Hafiez M.B. Khalid Department of Mechanical Engineering, Higher Institute for Sciences and Technology, Tobruk, Libya

Keywords:

Copper sample , Composite coating , Corrosion behaviour , Substrate Materials , Nickel sulfate

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.

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