Patent · US Expired

Process for the galvanic deposition of nickel from a nickel bath

US4160709A · kind A · utility

1Cited by

2References

3Claims

0Family size

Assignee

Messerschmitt Bolkow Blohm GmbH · DE

Inventors

Otto Tuscher · Oberschleißheim, DE
Karl Butter · Ottobrunn, DE
Kuno Knauer · Dorfen, DE

Key dates

Filing date	May 10, 1978
Grant date	Jul 10, 1979
Priority date	—
Expiry date	May 10, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S204/13
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A method for galvanic deposition of nickel from an electrolyte containing nickel sulfamate and nickel chloride is disclosed wherein the formation of intermediate products resulting from the oxidation of nickel sulfamate and the escape of anode sludge into the electrolyte are controlled to such an extent so as to reduce the amount of sulfur incorporated in the deposition to less than about 15 ppm. This results in avoidance of brittleness in the nickel deposition at high temperatures and allows the coated article to be welded. These properties were difficult or impossible to obtain in the prior art processes.

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