Surface treated steel material particularly electroplated steel sheet
US4853295A · kind A · utility
7Cited by
0References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 1987 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | May 13, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12972
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In the electroplated steel sheets for automobile use, the chipping resistance, water-resistant adhesion, unpainted corrosion resistance, post-painted corrosion resistance, and resistance to secular exposure are improved by superimposing a chemical conversion layer between electroplated layers of zinc and iron, nickel, cobalt, or alloys thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.