EVALUATION OF THE WEAR RESISTANCE BEHAVIOR OF ZN-NI AND ZN-NI/SIO2 COMPOSITE COATINGS

Tolumoye J Tuaweri, Olala M Olali, Emmanuel E Jumbo

Abstract: The sliding wear resistance behavior of Zn-Ni and Zn-Ni/SiO2 composite coatings were investigated using a sliding wear rig. Wear behavior was mainly evaluated based on weight loss measurements. Effect of applied load and no. of cycles on the weight loss of the coatings were given particular attention. Field Emission Gun Scanning Electron Microscopy (FEGSEM) was used to investigate the wear tracks to determine the prevalent wear mechanisms. It was found that weight loss of Zn-11%Ni/1%SiO2 was lower than those of Zn-11%Ni and Zn-11%Ni/11%SiO2 with a constant load of 10N and increasing number of cycles. Their weight loss took the following trend; Zn-11%Ni/1%SiO2

Keywords: Zn-Ni electrodeposition, composites, wear resistance, SiO2 nanoparticles

DOI: https://doi.org/10.15623/ijret.2014.0311080