Patent ID: 7604726
Filing Date: 2009-10-20
Classification: C23C,C25D,F05B,F05C,Y02T

Abstract:
1. A method for electroplating platinum, comprising: a) providing a substrate; b) electrolytically depositing a metal layer on a surface of said substrate, wherein said metal layer comprises platinum and a supplementary constituent, said supplementary constituent comprising particles selected from the group consisting of Cr, Si, Zr, and alloys thereof, wherein said metal layer is deposited from a single electrolyte composition during a single electrolytic step, wherein said electrolyte composition comprises a platinum salt and particles of said supplementary constituent having a mean particle diameter ranging between 1 micron and 10 microns and said particles do not include aluminum, and wherein said particles of said supplementary constituent are deposited in said metal layer from said electrolyte composition, and c) after said step b), aluminizing said metal layer of said substrate.