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US 12,042,855 B2Granted
Systems, formulations, and methods for removal of ceramic cores from turbine blades after casting
AssigneeRtx Corporation
InventorsLei Jin, Ryan C. Breneman, David Brayshaw
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Abstract
A solution is provided and includes a strong base, a corrosion inhibitor, wherein the strong base is an alkali metal hydroxide, wherein the corrosion inhibitor is at least one of an organic acid having a-COOH functional group or an alkali metal salt of one of an organic acid having a-COOH functional group.
Claims5
A solution comprising:
- a strong base comprising KOH, the KOH has a concentration between 22.5 wt. % and 45 wt. % relative to a total weight of the solution;
- a solubility enhancer comprising Ethylenediaminetetraacetic acid (EDTA);
- and
- a corrosion inhibitor comprising sodium tartrate.
1 more element
Dependencies are inferred from the claim text.