Method of producing highly corrosion resistant tin-plated steel sheet
US4104135A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1975 |
| Grant date | Aug 1, 1978 |
| Priority date | — |
| Expiry date | Aug 4, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12715
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of producing a highly corrosion resistant tin-plated steel sheet is disclosed by which a metal or alloy coating having a thickness from 0.005.mu. to 0.5.mu. and selected from the class consisting of Ni, Cu and Ni-Sn alloy is plated upon a steel sheet. The thus plated steel sheet is heated in a non-oxidizing atmosphere to such an extent that said plated coating is penetrated and diffused into the steel sheet whereby a reformed steel sheet surface where said plating coating is disappeared is secured. A tin coating is then plated upon said reformed steel sheet surface. This reformed steel sheet surface is sandwiched between the plating tin coating and the steel sheet and contributes greatly to corrosion resistant property of the tin-plated steel sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.