Title: Effect of laser surface texturing on tribological behaviour of grey cast iron

Authors: B. Anil Kumar; P. Dinesh Babu; P. Marimuthu; Muthukannan Duraiselvam

Addresses: School of Mechanical Engineering, SASTRA Deemed University, Thanjavur, Tamilnadu, India ' School of Mechanical Engineering, SASTRA Deemed University, Thanjavur, Tamilnadu, India ' School of Mechanical Engineering, SASTRA Deemed University, Thanjavur, Tamilnadu, India ' Department of Production Engineering, National Institute of Technology, Tiruchirappalli, Tamilnadu, India

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.

Keywords: laser surface texturing; surface roughness; scanning electron microscope; SEM; wear; lubrication.

DOI: 10.1504/IJSURFSE.2019.102381

International Journal of Surface Science and Engineering, 2019 Vol.13 No.2/3, pp.220 - 235

Received: 17 Jan 2019
Accepted: 19 Apr 2019
Published online: 23 Sep 2019 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article