Cold-rolled steel strip with electrodeposited nickel coating exhibiting a great diffusion depth

US4910096A · kind A · utility

Assignee

• HILLE & MÜLLER GMBH · DE

Inventors

• Dieter Junkers · Haan, DE
• Ferdinand Schmidt · Wilster, DE
• Nikolaus Ferenczy

Key dates

• Filing date: May 12, 1988
• Grant date: Mar 20, 1990
• Expiry date: May 12, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12937
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A cold-rolled steel strip having an electrodeposited nickel coating exhibiting a great diffusion depth, and a process for producing this strip. In order to develop a cold-rolled strip that can be produced economically, and which has a reduced tendency to stick, good deformability, deep coating diffusion, advantageous corrosion dehavior, and improved electrochemical behavior, and in order to develop a process for producing this strip, the thickness of the nickel coating should carry a coating of cobalt which has been electrodeposited to a thickness of 0.01 to 1.0 [m, and after having been coated, the cold-rolled strip should be subjected to a final heat treatment at a temperature of between 580.degree. and 710.degree. C.