Effect of Picosecond Laser Texture Surface on Tribological Properties on High-Chromium Steel Under Non-lubricated Conditions

The objective of this paper is to analyse the significant effects of negative dot patterned laser texture on piston ring material under non-lubricated conditions. The aim is to carry out experiments to study the tribological behavioural dynamics of the working on the interface of the textured silver steel piston ring material and EN-31. The percentage of the area of the pin textured, of the total area of the pin surface available, was 41.50%. With the predefined working parameters for the experimental working, such as the load applied, sliding velocity and the track distance travelled over the course of wear for different diameters of specimens used, the values of wear, coefficient of friction and the variation in temperature throughout the experimental duration was measured. The pin and disc interface was not provided with lubrication, and the experiment was run under dry conditions. This experimental study is helpful in the better understanding of the potential of the negative texturing on the surface, leading to the reduction in friction and enhanced wear resistance for IC engines’ piston and cylinder interface.