Flame spray powder for wear resistant alloy coating containing tungsten carbide
US4013453A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1975 |
| Grant date | Mar 22, 1977 |
| Priority date | — |
| Expiry date | Jul 11, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12063
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and coating material are provided for improving the wear and abrasion resistance of a composite nickel-base hard facing alloy applied to metal substrates comprising the system Ni-Cr-Si-B having dispersed therein particles comprising tungsten carbide, the improvement residing in controlling the average particle size of tungsten carbide to below 10 microns, e.g. 0.1 to 10 microns, preferably an average size ranging from about 2 to 8 microns (such as 2 to 6 microns), at an average interparticle spacing of less than 15 microns, and preferably less than 10 microns, e.g. up to 5 microns, the hard facing coating produced being further characterized in that the coating exhibits metallographically a substantially uniform structure at the surface thereof with respect to said tungsten carbide particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.