US Patent:
20030098091, May 29, 2003
Inventors:
Walter Opdycke - Livonia MI, US
William Wittke - Clarkston MI, US
Shawn Dolan - Sterling Heights MI, US
Eugene Sweet - Beverly Hills MI, US
International Classification:
C23C022/00
Abstract:
A process for importing corrosion resistance to the surface for an aluminum substrate by contacting the aluminum substrate with an aqueous solution containing at least one of terafluoroboric acid, hexafluorosilisic acid, hexafluorotitanic acid, hexafluorozirconic acid, hexafluorohafnic acid and soluble, partially or totally neutralized salts and vanadate anions.