Protecting a surface of a nickel-based article with a corrosion-resistant aluminum-alloy layer
US6533875B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2000 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Nov 25, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A surface of a nickel-base article such as an internal surface of a gas turbine airfoil is protected with a donor layer of aluminum and at least one other element. To form the protective layer, a donor alloy is contacted to the protected surface of the article, and simultaneously the article and the donor alloy are heated to a coating temperature that is greater than about 0.7 of the absolute solidus temperature of the donor alloy but is such that the donor alloy remains in the form of a condensed phase contacting the protected surface of the article. The donor alloy is thereafter interdiffused into the protected surface of the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.