Abstract
This work aims to study the effect of laser surface microtexture on the sliding behaviour of grey cast iron, which is used as a liner material in internal combustion engines. The sliding wear analysis was conducted at different sliding speeds (200 rpm, 400 rpm, and 600 rpm) and a normal load of 10 N. Laser machining system was used to create micro-dimples with texture densities of 13.45% and 6.37%. The dimple sizes were observed using a scanning electron microscope, and the surface roughness was measured using the white light interferometer. The sliding wear results show that the textured samples with 13.45% densities in higher viscosity 146 mPas oil show better wear resistance with 0.1828 mm3'm wear rate and reduced friction coefficient of 0.1973. The wear morphology of the textured samples confirms the abrasive wear mechanism with minimum material removal compared with the non-textured specimen for the given applied load and sliding speed.
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