Thin abradable ceramic air seal
US4936745A · kind A · utility
48Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Dec 16, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An abradable coating is described for interaction with a abrasive gas turbine engine component to provide sealing. The abradable coating comprises yttria stabilized zirconia with intentional porosity which is applied by plasma spraying to a MCrAlY bond coat which in turn rest on a superalloy substrate. The coating system is applied by plasma spraying. The coating system is adapted to interact with an abrasive coated abrasive treated gas turbine engine component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.