Progress of laser surface treatment on magnesium alloy

Magnesium (Mg) metals have been widely used in various fields as one of the most promising lightweight structural materials. However, the low corrosion resistance and poor mechanical properties restrict its applications. Surface treatments are common approach to enhance the mechanical strength and corrosion resistance of Mg metals. Among them, laser surface treatment generates novel tissues and structures in situ on the sample surface, thereby improving properties of mechanical strength and corrosion resistance. We briefly describe the changes in surface organization that arise after laser treatment of Mg surfaces, as well as the creation of structures such as streaks, particles, holes, craters, etc., and provide an overview of the reasons for the alterations. The effect of laser processing on wettability, hardness, friction wear, degradation, biocompatibility and mechanical properties were reviewed. At last, the limitations and development trend of laser treatment on Mg metals research were further pointed out.

Automated summary

Magnesium (Mg) metals, as a promising lightweight structural material, have been widely used but are limited by their low corrosion resistance and poor mechanical properties. Laser surface treatment is a common approach to improve the mechanical strength and corrosion resistance of Mg metals. This article briefly describes the changes in surface organization and the creation of new structures through laser treatment on Mg surfaces, and reviews the effects on wettability, hardness, friction wear, degradation, biocompatibility, and mechanical properties. The limitations and development trends of laser treatment on Mg metals research are also discussed.