The light alloy was widely used for aerospace

automobiles

motorcycles

optical instrument

mechanical equipment

medical apparatus as well as electronic parts due to its characteristics of low weight

high specific intensity and thermal conductivity as well as anti-electromagnetic properties. However

the light alloy has some disadvantages

such as low hardness

worse wear resistance and corrosion resistance

so it is necessary to perform surface treatment to improve the corrosion resistance

wear resistance

anti-friction as well as oxidization resistance at a high temperature.