Article having durable ceramic coating with localized abradable portion
US6358002B1 · kind B1 · utility
55Cited by
18References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1999 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Aug 10, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air seal is illustrated as used in a gas turbine engine. The seal includes at least a seal substrate, a relatively dense, erosion resistant ceramic layer applied over the bond coat, and an abradable ceramic layer applied in a local area over the dense ceramic layer. The abradable ceramic interacts with a component moving relative to the seal, such as a turbine blade that moves relative to the seal, and cooperates with the moving component to provide sealing and thermal insulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.