The invention relates to a method for improving
corrosion resistance of the
magnesium alloy surface through a short-pulse
laser. The method comprises the steps that (1), a
magnesium alloy material is subjected to sand papering to remove an oxidation layer and then subjected to
acetone cleaning to remove oil; (2), the cleaned
magnesium material is placed on a worktable of a
nanosecond laser machining system,
laser parameters are set, the laser
machining system is started, the laser is made to scan on the surface of the
magnesium alloy material in a certain speed through
galvanometer scanning, and a remelting layer is obtained on the surface of the
magnesium alloy material; and (3), the machined
metal material is cleaned simply. According to the method for improving
corrosion resistance of the
magnesium alloy surface through the short-pulse laser, a
laser direct writing system is utilized, and by changing the laser parameters such as the frequency, the scanning speed and the power, the fused depth, the area and the like of the
metal surface can be controlled precisely; a chemical
reagent does not need to be added additionally, so that environment protecting is achieved; arbitrary set of a
machining area can be achieved; the machining speed is higher, and the production efficiency is improved; and the short-pulse laser with the low power is used, so that the situation that
metal matrix performance remains unchanged is facilitated.