Magnesium alloys are widely used in the area of aerospace industry,automobile and electronic industry.Due to its bad corrosion resistance,magnesium alloys haven't been widely used as aluminium alloy. In a harsh environment with Cl-,magnesium alloys have very poor corrosion resistance.The corrosion of magnesium will not happen in the alkaline solution with pH>11.5.It is important to solve the problem of the corrosion of magnesium,so that we can promote the comprehensive application and the industrial...