Thermal barrier coating with alumina bond inhibitor
US6103386A · kind A · utility
28Cited by
33References
14Claims
0Family size
Inventors
Key dates
| Filing date | Oct 6, 1997 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Oct 6, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/5024
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A thermal barrier coating for superalloy turbine engine vanes and blades that are exposed to high temperature gas is disclosed. The coating includes an aluminide or MCrAlY layer, an alumina layer, and a ceramic top layer. The ceramic layer has a columnar grain microstructure. A bond inhibitor is disposed in the gaps between the columnar grains. This inhibitor is preferably alumina.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.