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US 12,448,923 B2Granted
Protective treatment and method of applying the same
AssigneeRtx Corporation
InventorsHamidreza Mohseni, Lesley Dawag
Life of this patent
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Abstract
A sealing system includes a shaft, a rotor configured to rotate with respect to the shaft, and a carbon-carbon composite seal ring arranged around the shaft such that it seals against the rotor. The carbon-carbon composite seal ring includes a monoaluminum phosphate binder layer disposed on at least one surface of the carbon-carbon composite seal ring and a ceramic layer disposed over the monoaluminum phosphate binder layer on the least one surface of the carbon-carbon composite seal ring. A method of manufacturing a seal is also disclosed.
Claims20
A sealing system, comprising:
- a shaft;
- a rotor configured to rotate with respect to the shaft;
- and
- a carbon-carbon composite seal ring arranged around the shaft such that it seals against the rotor, the carbon-carbon composite seal ring including a monoaluminum phosphate binder layer disposed on at least one surface of the carbon-carbon composite seal ring and a ceramic layer disposed over the monoaluminum phosphate binder layer on the least one surface of the carbon-carbon composite seal ring.
1 more element
A method of manufacturing a seal, comprising:
- manufacturing a carbon-carbon composite into a carbon-carbon composite seal ring;
- impregnating the carbon-carbon composite seal ring with a solution-based binder to form a binder layer on at least one surface of the carbon-carbon composite seal ring;
- and
- applying a ceramic layer over the binder layer on at least one surface of the carbon-carbon composite seal ring by atomic layer deposition,
- wherein the carbon-carbon composite seal ring includes a monoaluminum phosphate binder disposed on at least one surface of the carbon-carbon composite seal ring and a ceramic layer disposed over the monoaluminum phosphate binder layer on the at least one surface of the carbon-carbon composite seal ring.
2 more elements
Dependencies are inferred from the claim text.