Gerald J Wojcik

US Patent:

6692583, Feb 17, 2004

Filed:

Feb 14, 2002

Appl. No.:

10/076897

Inventors:

Jon Bengston - West Hartford CT 06107
Mark Wojtaszek - Burlington CT 06013
Gerald Wojcik - Thomaston CT 06787
Massimo Dimarco - Middlebury CT 06762

International Classification:

C23C 2207

US Classification:

148261, 148273, 148275, 106 1412

Abstract:

A conversion coating composition and a method of applying the conversion coating composition to magnesium and magnesium alloy articles prior to painting to prevent corrosion. The conversion coating composition comprises a source of vanadate ions, a material comprising phosphorus, and nitric acid or a source of nitrate ions. In addition, the composition may also contain boric acid or a source of borate ions and a source of fluoride ions or a source of fluoroborate ions.