Method for improving performance of carbide cutting tools through texture design using femtosecond laser pre- and post-TiAlN coating

Integrating coating deposition and surface texturing techniques is a promising approach to enhancing the surface properties of substrate materials, yet their combined effects and mutual interactions need further explorations. This study introduces a novel approach by investigating microtextured, coated cemented-carbide surfaces while highlighting the unique interaction between texturing and coating deposition. Through experimental analysis, we explore the influence of key process parameters on surface characteristics, and adhesion behavior of the treated surface. The findings reveal that applying texturing first, followed by coating, leads to significantly improved microhardness, structural integrity, and adhesion performance than the conventional process for coating pre-textured surfaces. Additionally, the first texturing approach results in a 12% increase in microhardness, a 2% decrease in Rockwell hardness, an 8% reduction in grain size, and a 9% decrease in friction force, demonstrating superior hardness and mechanical performances. The study further demonstrates that a controlled increase in aluminum content enhances hardness, reduces friction, and suppresses the growth of titanium phases, collectively improving the material’s tribological performance. These results highlight the synergetic benefits of surface texturing and coating while providing practical insight for designing more durable materials for cutting applications.