Recent advances in laser surface texturing for improving tribological properties of materials (2020–2025)
摘要
Surface texturing technology is highly effective in enhancing the tribological properties of material surfaces, as it exhibits a variety of friction-reducing and anti-friction effects through the preparation of specific micro-geometric patterns on the surface of the material. Among many surface texture preparation techniques, laser texturing technology has the advantages of fast processing speed, high processing accuracy, high production efficiency, good controllability and low pollution to the environment, and has been applied in the fields of precision machining, aerospace, biomedicine and material surface modification. Previous reviews have summarized the impact of laser surface texturing on tribological properties before 2020. Due to the wide variety of laser texturing techniques, friction-reducing mechanisms are different, and the problems are complex and varied, it is particularly important to select a more compatible laser texturing technique to improve productivity in the actual production process. Based on the development of laser surface texture technology, the friction-reducing mechanism of laser surface texture is introduced, and the action mechanism of surface texture under different conditions is analyzed; The research achievements of optical nanosecond, femtosecond, picosecond and liquid-phase assisted laser texture technology in recent years are reviewed; The effects of process parameters and texture parameters, including laser power, laser overlap rate, scanning times, texture area density and texture spacing, on surface hardness, surface roughness and friction coefficient are discussed; The effects of laser bionic texture on the surface wear resistance and wettability of the material were summarized; The effects of lubrication conditions, including dry friction, boundary lubrication and fluid lubrication, on the surface lubricity, friction coefficient and wear amount of materials are described in detail; The effects of laser surface textured coatings, including non-metallic coatings and metallic coatings, on wear resistance, hydrophilicity and corrosion resistance were investigated; The existing problems of laser texture technology are pointed out, and the future development direction is prospected. Furthermore, this paper critically evaluates most of the cited literature, objectively pointing out existing issues within the literature. It also identifies current challenges in laser texturing technology and outlines future development directions.