Patent · US Expired

Method for producing a decorative gold alloy coating

US5510012A · kind A · utility

9Cited by

6References

5Claims

0Family size

Assignee

Leybold GmBH · DE

Inventors

Siegfried Schulz · Rolling Meadows, US
Christoph Daube · Alzenau, DE
Alfred Belz · Niederrodenbach, DE
Andreas Rack · Hanau, DE

Key dates

Filing date	May 27, 1992
Grant date	Apr 23, 1996
Priority date	—
Expiry date	May 27, 2012

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C14/14
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

For the production of a coating formed by cathode sputtering, a target made from an alloy of gold and preferably vanadium is used. During the cathode sputtering, nitrogen gas is used as the reactive gas. The result is the formation of vanadium nitrides on the substrate to be coated. By varying the nitrogen content, the proportion of the vanadium nitrides can be changed thereby causing the appearance and the hardness of the coating to also change. This change in coating characteristics can accommodate a broad range of requirements avoiding the necessity of using different targets for different coating characteristics.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.