A Novel Synergistic Approach for Wear Performance Improvement of Yg8 Cemented Carbide Tools

Abstract

This study combines laser etching and PVD coating technology to enhance the hardness and wear resistance of the YG8 tungsten carbide surface. A comprehensive analysis of surface morphology and chemical composition changes before and after wear, as well as at the wear edges, was conducted using SEM-EDS. Microhardness test results showed that the hybrid-treated samples exhibited a significant increase in hardness, with an improvement of 173.94% compared to the original samples. The results of the ball-on-disk wear tests showed that the NiTiW multi-component alloy coating significantly improved the hardness and wear resistance of the YG8 cemented carbide, particularly under the condition of five laser etching passes at a scanning speed of 500 mm/s, where its wear resistance increased by 159.22%.

Keywords: YG8 Cemented Carbide, Laser Etching, Surface micro-texture, NiTiW multi-component alloy Coating