Article with a protective coating system including an improved anchoring layer and method of manufacturing the same
US6528189B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1998 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Dec 14, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12944
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In order to form a novel article of manufacture, a nickel or cobalt-based superalloy substrate is covered with a protective system resistant to thermal, corrosive and erosive attack. A bonding layer is disposed on the substrate and an anchoring layer on the bonding layer. The anchoring layer is formed as a nitride compound. The nitride compound is aluminum nitride in particular. A ceramic coating is disposed on the anchoring layer. The anchoring layer prevents transmission of diffusion active elements through the anchoring layer to the thermal barrier layer, reduces oxidation of layers therebelow and provides for good heat transmission therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.