It is flammable and explosive,and brings high temperature and glaring light when burning.Therefore,Mg powder is wisely used in such scientific area as war industry and aviation industry. The chemical performance of Mg is very active,which is mostly used in metallurgical industry.Mg powder can sever as desulfurizer or cleaning agent for steel-making industry and casting of non-ferrous metals,and reducer for production of rare metal. In chemical industry,Mg powder can be used as dehydrant for organic compound or to directly make organic compound of Mg.In recent years,Mg powder has been mostly used in spaying,coatingantti-corrosion,monocrystalline silicon,polycrystalline silicon ,and cating of metallurgical powder as well.