Method for applying wear-resistant dispersion coatings
US5141769A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1990 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Dec 17, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C4/134
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Surfaces of structural components of metal or the like are protected by depositing a wear-resistant dispersion coating of a matrix metal and hard-material particles embedded in the metal matrix. The depositing is accomplished by a sequential plasma spraying and particle blasting, whereby the hard-material particles are applied separately from the plasma stream to inject the particles into the plastically still deformable matrix metal. The coating steps are performed in an evacuated chamber or in an inert gas environment. These coatings are especially suitable on the blade tips of gas turbine engines, on the sealing fins of labyrinth seals or as "rub" coatings on circumferential rotor surfaces or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.