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US 9,546,338 B2Granted
Redox couple-based mitigation of fluid-flow-driven electrochemical surface degradation
AssigneeThe Boeing Company
InventorHarold E Hager
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Abstract
The present disclosure relates to methods, systems, hydraulic fluids and additives for reducing the rate of surface current degradation for components in a hydraulic system, wherein the hydraulic system is exposed to phosphate-ester-based hydraulic fluid.
Claims12
A hydraulic fluid for use in a hydraulic fluid system, said hydraulic fluid comprising:
- a phosphate-ester-based compound;
- and
- an additive;
- wherein said additive comprises a redox couple, said redox couple comprising a metallocene couple.
1 more element
A method for reducing rate of surface current induced degradation for components in a hydraulic system, the method comprising the step of:
- adding a hydraulic fluid to the hydraulic system, said hydraulic fluid comprising an additive, said additive comprising:
- a redox couple.
Dependencies are inferred from the claim text.