Friction Characteristic of Sliding Direction and Angle of Micro-Grooved Crosshatch Patterns under Lubricated Contact

Abstract

Surface texturing, a sort of surface engineering, has been studied as an effective method to improve the tribological performance under lubricated contact. Those mechanisms of friction reduction, however, are not fully understood. Therefore, the sliding direction and the angle of micro-grooved crosshatch patterns for coefficient of friction were examined. The micro-grooved crosshatch pattern was fabricated by mechanical indentation method on the upper specimen and the pin-on-disc friction test was performed with lubricant of paraffin oil. The influence of angel on the friction was confirmed as friction coefficient increased proportional to the angle increase. The micro-grooved crosshatch patterns have also the potential to change the friction characteristics by sifting the lubrication regimes.