Improvement in Tribological Behaviour of Brake Pad Material with CNT-Ni-P Composite Coating and Compare with Al2O3-Ni-P Composite Coating

Abstract

In mechanical machine components, the wear and friction are the major issues which are responsible for the fault and their failure. In this analysis, the tribological and mechanical properties of semi-metallic brake pad material were investigated. For improvement in the mechanical and triblogical properties of brake pad materials, Ni-P based multi-walled carbon nanotubes (MWCNT) and Ni-P-based nano Al2O3 composite coating was used. The electroless coating technique was used for the coating as it results in excellent tribological properties such as good wear and corrosion resistance, uniform coating thickness, good hardness, etc. Energy dispersive x-ray spectroscopy (EDX) test was used to find the composition of the brake pad sample. Tribological parameters like frictional force and wear rate were determined by pin-on-disc tribometer. The result shows that the tribological properties of brake pad were enhanced after the coating and wear rate and frictional forces were less as compared to without coated sample. Field emission scanning electron microscopy (FESEM) was used to validate the result of the test.