Study on surface roughness parameters of nano composite coatings prepared by electrodeposition process

The hard nano Al2O3 particles are successfully embedded in the Ni composite coating. The presence and distribution of nano particles is analyzed by EDS method. The roughness of the composite coating surface is greatly influenced on the specific wear rate and coefficient of friction. The Ni-Al2O3 composite coatings have shown better specific wear rate in comparison with bare Ni coating. The coefficient of friction of the Ni- Al2O3 composite coating was found to decrease with increase in the roughness value. The maximum COF and minimum specific wear rate were found to be 0.457 and 0.85 x 10(-4) mm(3) /NM is observed at a Ra value of 1.032 mu m respectively. (C) 2020 The Authors. Published by Elsevier Ltd.

Automated summary

In this study, hard nano Al2O3 particles are successfully embedded in the Ni composite coating, and their presence and distribution are analyzed. The roughness of the composite coating surface greatly influences the specific wear rate and coefficient of friction. The Ni-Al2O3 composite coatings exhibit better specific wear rate compared to bare Ni coating, with the coefficient of friction decreasing with increasing roughness value.