Method for producing a nickel aluminide coating on a metal substrate, and part having one such coating
US10549378B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2013 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Jul 3, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1275
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a method for producing a nickel aluminide coating on a metal substrate. The method includes the following steps: a) coating the substrate with a nickel deposit; b) applying an aluminum sheet onto the nickel deposit from step a) so as to form an assembly made up of the substrate coated with the nickel deposit and the aluminum sheet; and c) subjecting said assembly to heat treatment at a temperature that is lower than the melting point of aluminum, and at a low pressure so as to induce a reaction between the aluminum and the nickel and thus form a β-NiAl nickel aluminide layer mounted on a nickel layer. The invention is particularly of use for protecting the materials used in turbines of aircraft engines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.