Methods of protecting aerospace components against corrosion and oxidation
US11732353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2020 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Aug 29, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64F5/40
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Embodiments of the present disclosure generally relate to protective coatings on an aerospace component and methods for depositing the protective coatings. In one or more embodiments, a method for depositing a coating on an aerospace component includes depositing one or more layers on a surface of the aerospace component using an atomic layer deposition or chemical vapor deposition process, and performing a partial oxidation and annealing process to convert the one or more layers to a coalesced layer having a preferred phase crystalline assembly. During oxidation cycles, an aluminum depleted region is formed at the surface of the aerospace component, and an aluminum oxide region is formed between the aluminum depleted region and the coalesced layer. The coalesced layer forms a protective coating, which decreases the rate of aluminum depletion from the aerospace component and the rate of new aluminum oxide scale formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.