Cleaning compositions and methods for removing oxides from superalloy substrates
US10377968B2 · kind B2 · utility
10Cited by
20References
20Claims
0Family size
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Key dates
| Filing date | Jun 12, 2017 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Jun 14, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/175
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods for cleaning a superalloy substrate having engine deposits on its surface are provided. The method may include applying a permanganate solution onto the surface of the superalloy substrate, and applying a ferric chloride based cleaning composition onto the surface of the superalloy substrate. The ferric chloride based cleaning composition includes ferric chloride and at least one of nitric acid and phosphoric acid, such as within a solvent system (e.g., an aqueous solution including water).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.