Steel wire having superposed coatings resisting corrosion
US4605598A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1984 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Jun 26, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2958
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A perfectly ductile hard steel wire having superposed coatings resisting corrosion. The wire is coated with a first inner layer A1 (Al-Fe-Zn) and a second outer layer A2 (Zn-Al-Fe) and the first inner coating layer has the following composition: ______________________________________ Al between 15% and 45% Fe between 5% and 25% Al Zn forming the balance with elements of addition in a small amount, such as Mg, Sn, Ni, Cu, Cr, Mischmetal, etc. . . the total amount of which does not exceed 0.5%. ______________________________________ This wire has a resistance to corrosion very much higher than that of conventional galvanized wires and that of similar Zn-Al coatings which had been deposited in a single stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.