Material and a method for forming a protective coating on a substrate of a copper-based alloy
US5496391A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Aug 2, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C4/073
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A powdered metallic coating material is disclosed, having the following composition (in weight percent): ______________________________________ Cu: 5-30 P: 0.1-4.0 B: 0.5-4.0 Si: 0.5-4.0 Cr: 0-5.0 Fe: 0-3.0 C: 0-0.3 Ni: balance ______________________________________ This material is used for forming, by thermal spraying, plasma arc welding or brazing, a protective coating against high temperature corrosion and erosion, on a substrate made of a copper based alloy. A flux composition or a mixture of such a composition with an alloy containing phosphorus is applied first on the surface of the substrate, and said powdered metallic material is then applied thereupon. Improved adherence of the coating to the substrate, as well as better compactness and machinability properties of this coating are achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.