Aluminum: silver white luster, used to paint other substances mixed brush iron, iron surfaces to prevent corrosion. And aluminum oxygen combustion emits bright white light, emits a lot of heat, and is often used to make an explosive mixture such as aluminum explosive. The metallurgical industry, commonly used thermite molten Refractory metals. After the start of aluminium and iron oxide powder mixed with the violent reactions in this welded rail; aluminum of the steel industry is often used as reducing agent; smooth aluminium has good light reflection characteristics can be used to produce high quality mirrors, Central Bowl. Aluminum oxide, also called alumina, 102 of them, are often referred to as "alumina siloxane" is a white amorphous powder, insoluble in water, commonly referred to as alumina.