Turbine blade internal hot corrosion oxide cleaning
US11136674B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2018 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Dec 21, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/611
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A material removal method comprises receiving a component that includes a component body and a coating on the component body, the component body comprising metallic first material, and the coating comprising a second material that is different from the first material, wherein the component is a component of an item of rotational equipment. The method also includes receiving a solution comprising nitric acid and hydrogen peroxide and subjecting at least a portion of the coating to the solution in supercritical condition in order to remove at least some of the second material from the component, wherein a chemistry of the solution is selected such that the solution is substantially non-reactive with the first material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.