Turbine clearance control coatings and method
US11859499B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2016 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Oct 20, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention discloses a turbine engine with at least a high pressure and a low pressure turbine section comprising a casing and at least one turbine blade rotatably mounted within the casing wherein at least part of the inner surface of the casing is covered with shrouds as abradables to provide clearance control between the inner surface and the tip of the at least one blade and wherein the tip of the blade is coated with a hard PVD coating, characterized in that the shroud material of at least the high pressure and/or the low pressure section comprises a porous ceramic based material and the hard PVD coating on the tip of the blade essentially consists of a droplet free nitride coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.