Aluminium is called self protective metal?
or:Aluminium is called self protective metal?or:Aluminum oxide is very hard, so the surface protects the underlying aluminum from further erosion. Al
or:Aluminium is called self protective metal?
or:Aluminum oxide is very hard, so the surface protects the underlying aluminum from further erosion. Aluminum oxide is called sapphire. The layer can be formed by electric action, the reverse of plating, and the layer can be died any color. That is called anodize.
