SURFACE TREATED AL OR AL-ALLOY MATERIAL EXCELLENT IN PRESS FORMABILITY AND CORROSION RESISTANCE AFTER COATING

摘要

PURPOSE: To provide a surface-treated Al or Al-alloy material excellent in press formability and corrosion resistance after coating by improving the press formability of the surface treated Al or Al alloy material excellent in phosphating treatability. ;CONSTITUTION: A surface-treated Al or Al-alloy material is subjected to Zn-base plating and/or Fe-base plating. The surface of the plating layer is coated with ceramic particles by 20-80% covering rate.;COPYRIGHT: (C)1993,JPO&Japio