COATING METHOD FOR INORGANIC POLYSILAZANE ON THE SURFACE OF MAGNESIUM ALLOY AND MAGNESIUM ALLOY FORMED THEREBY

摘要

The present invention relates to a coating method and an alloy formed thereby, and more specifically, by plasma electrolytic oxidation treatment on the surface of a magnesium alloy, and then applying inorganic polysilizane to improve the hardness and prevent fingerprints while maintaining the natural texture of the magnesium alloy metal. It relates to a method of coating an inorganic polysilazane on a surface of a magnesium alloy, and a magnesium alloy formed thereby. To this end, the present invention provides a surface treatment step for plasma electrolytic oxidation treatment of a magnesium alloy surface by applying a + voltage and a-voltage to the magnesium alloy oppositely disposed in an electrolytic cell containing an electrolyte solution; A paint coating step of applying a paint containing inorganic polysilazane on the surface of the magnesium alloy subjected to plasma electrolytic oxidation through the surface treatment step; And a paint curing step of curing the paint applied on the magnesium alloy through the paint application step.