Procédé et produit de protection contre la corrosion et application à des alliages d'aluminium.

摘要

A corrosion protection material and method for non-metal alloys, particularly light aluminium alloys. The method comprises the steps of coating a material to be protected with a layer containing a chromium-free inhibitor, consisting of at least one dihydroxyazoic salt having structural unit (a), wherein Y is a salt producing anion and M is a metal. For the same number of moles, protection with an effectiveness comparable to that of chromate inhibitors may thus be achieved.