Turbine blade with ceramic foam blade tip seal, and its preparation
US6755619B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2000 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Jan 28, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249967
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbine blade has an airfoil section with a root end and a tip end, and an attachment at the root end of the airfoil section. A blade tip seal is joined to the tip end of the airfoil section. The blade tip seal is formed as an open-cell solid aluminum oxide foam made of aluminum oxide cell walls having intracellular volume therebetween. The blade tip seal has a blade interface region adjacent to the tip end of the airfoil section. The blade interface region is formed of the aluminum oxide foam and a nickel-base alloy within the intracellular volume. The blade tip seal also has a contact region remote from the blade interface region and comprising the aluminum foam wherein the intracellular volume is porosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.