Steel substrate electroplated with Al powder dispersed in Zn
US4036600A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1976 |
| Grant date | Jul 19, 1977 |
| Priority date | — |
| Expiry date | May 27, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12757
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite zinc-aluminum dispersion plated steel sheet and a method of producing same are disclosed. The plated steel sheet comprises an electrolytical zinc plated layer containing 1.5 to 70% by weight of aluminum dispersed therein. The method comprises adding aluminum powder to an electrolytical zinc plating bath composition, dispersing the aluminum powder into the plating bath to provide a composite zinc-aluminum dispersion plating bath, and electrolytical treating a steel sheet in the composite zinc-aluminum dispersion plating bath while agitating it. The plated steel sheet enhances corrosion resistances and does not show any spangles which impair the appearances after subsequent painting of the plated steel sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.