Method for applying diffusion coating masks
US4978558A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1988 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Jun 10, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C10/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Methods for selectively applying a diffusion aluminide coating to the surface of a metal article while keeping other article surfaces free of the coating are described. The method includes the steps of injection molding a mixture of materials onto the surfaces which are to be kept free of coating; the material comprises solid particles effective in preventing deposition of the coating onto the surfaces and a moldable amorphous thermoplastic resin; it contains no volatilizable solvents. The mixture is applied to the article surface to a thickness of about 5 millimeters. It is useful in pack diffusion as well as vapor phase diffusion aluminide coating operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.