Coated metal product and precursor for forming same
US5035957A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1990 |
| Grant date | Jul 30, 1991 |
| Priority date | — |
| Expiry date | Feb 23, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12611
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed are coated metal articles having protective coatings which are applied to substrate metals by coating the metal surface, e.g. by dipping the substrate metal in a molten alloy of the coating metals, and then exposing the coating at an elevated temperature to an atmosphere containing a reactive gaseous species which forms an oxide, a nitride, a carbide, a boride or a silicide. The coating material is a mixture of the metals M.sub.1 and M.sub.2, M.sub.1 being zirconium and/or titanium, which forms a stable oxide, nitride, carbide, boride or silicide under the prevailing conditions. The metal M.sub.2 does not form a stable oxide, nitride, carbide, boride or silicide. M.sub.2 serves to bond the oxide, etc. of M.sub.1 to the substrate metal. Mixtures of M.sub.1 and/or M.sub.2 metals may be employed. Eutectic alloys of M.sub.1 and M.sub.2 which melt substantially lower than the melting point of the substrate metal are preferred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.