Process for applying an aluminum-containing coating using an inorganic slurry mix
US6497920B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2000 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Sep 6, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An internal passage of an article such as a gas turbine airfoil is coated with an aluminum-containing coating. To accomplish this coating process, a coating slurry of a mixture of a carrier component of water and a hectorite clay or a bentonite clay, together with a solids component of a source of aluminum, a halide activator, and an oxide dispersant, is prepared. The coating slurry is applied to the internal passage of the gas turbine airfoil and dried. The gas turbine airfoil and the applied coating slurry are heated to form an aluminum-containing coating bonded to the internal passage of the gas turbine airfoil. Excess coating material is removed from the article internal passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.