Surface-hardened objects of alloys of platinum and palladium and method for their production

US5518556A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Wolfgang Weber · Hemau, DE
• Klaus Zimmermann · Alzenau, DE
• Hans-Hermann Beyer · Munich, DE

Key dates

• Filing date: Mar 15, 1994
• Grant date: May 21, 1996
• Expiry date: Mar 15, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C8/68
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Hard and scratch-proof objects of platinum and palladium or their alloys comprise a boron-containing surface layer which is 20 to 500 .mu.m thick and contains 0.3 to 1.5% by weight boron embedded in the metal lattice.