Corrosion resistance of magnesium alloy

magnesium alloys in the atmosphere
  • 2020-08-08 14:43:25

magnesium alloys in the atmosphere

Magnesium alloys can form oxide films on the surface of magnesium alloys in ordinary atmosphere, which will certainly protect the matrix of magnesium alloys. However, since the oxide film grows naturally, it is very loose and porous, and has poor corrosion resistance. In humid air, magnesium alloys are easily oxidized. When there are chloride ions in the air, the corrosion is more serious. Therefore, magnesium alloys In the atmospheric environment, whether it is ordinary or humid, it is unstable and deep. The corrosion process is mainly oxygen depolarization corrosion. The degree of stability depends on the degree of atmosphere and the degree of pollution. If humidity and pollution are large, the corrosion is serious. In a dry atmosphere, it is relatively