Chemically passivated object made of magnesium or alloys thereof

US6794046B1 · kind B1 · utility

Assignee

• AHC OBERFLACHENTECHNIK GMBH & CO. OHG · DE

Inventors

• Peter Kurze · Pulsnitz, DE
• Ulrike Kruger · Kerpen, DE
• Marco Köhler · Bornheim, DE
• Dora B{overscore (a)}nerjee · Kerpen, DE

Key dates

• Filing date: Sep 21, 2001
• Grant date: Sep 21, 2004
• Expiry date: Sep 21, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C2222/20
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An article made of magnesium or its alloys, some or all of whose surface has a conversion coating, the conversion coating comprising MgO, Mn2O3 and MnO2 plus at least one oxide from the group consisting of vanadium, molybdenum and tungsten; and also a process for producing such an article, and its use.