Method of removing a thermal barrier coating
US6210488A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1998 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Dec 30, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/202
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of removing a thermal barrier coating from cooling holes in the surface of a component designed for use in a hostile thermal environment, such as the turbine, combustor and augmentor sections of a gas turbine engine. The method is particularly suited for completely removing a thermal insulating ceramic layer of a thermal barrier coating system that includes a metallic bond coat, such as a diffusion aluminide or MCrAlY coating, that bonds the ceramic layer to the component surface. Processing steps generally include removing the ceramic layer from the component surface surrounding the cooling hole, followed by removing that portion of the ceramic layer within the cooling hole by immersing the component in a liquid and then directing ultrasonic energy into the cooling hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.