Corrosion-resistant a1-based structural member and method for manufacture thereof

摘要

A corrosion-resistant Al-based structural member ( 1 ) is provided that has a base layer ( 2 ) adhered to the surface of an Al-based structural member ( 1 ₀), and a corrosion-inhibiting coating ( 3 ) adhered to the surface of the base layer ( 2 ). The base layer ( 2 ) is made of Zn, and the corrosion-inhibiting coating ( 3 ) is made of a trivalent Cr-containing chromate coating for Zn. It is thereby possible to provide a corrosion-resistant Al-based structural member equipped with a nonpolluting corrosion-inhibiting coating containing no hexavalent chromium.