Aluminizing Treatment of Mild Steel Using Aluminum Foil

To obtain the ductile and corrosive coating treatment for steel, the aluminizing treatments using aluminum foil on mild steel surface were performed at diffusion temperature from 700 to 1000°C. The foil aluminized steels had less voids in diffusion layers, than the hot-dip aluminized steels. The foil aluminized steels at diffusion temperature not higher than 800°C had a thinner brittle layer of aluminum rich intermetallic Fe2Al5, and that at diffusion temperature not lower than 900°C had thicker layers of iron rich intermetallics such as FeAl and Fe3Al. It was found that the three body abrasive wear rates of aluminized steels with FeAl and Fe2Al that diffused at not lower than 900°C against free SiC grains were smaller wear rate than those of the steels diffused at higher than 800°C.