Wear resistant piston seal
AssigneeRaytheon Technologies Corporation
InventorsDilip M. Shah, Pantcho Stoyanov, Chris Vargas
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Abstract
Aspects are directed to a tribological and creep resistant system configured to operate at temperature in excess of 750° C., comprising: a piston seal that includes a nickel base alloy, where the nickel base alloy includes a Ni3(Al,X) type precipitated phase in an amount greater than 40% by volume. Aspects are directed to a system comprising: a piston seal that includes a cobalt-based alloy. Aspects are directed to a method comprising: heat treating an ingot of a nickel base alloy that includes coarsening a precipitated phase to facilitate forging or wrought forming the ingot, machining the ingot to include a substantially flat surface, and processing the ingot to generate a piston seal.
Claims9
A tribological and creep resistant system configured to operate at temperature in excess of 750° C., comprising:
- a turbine frame vane;
- a piston seal that includes a nickel base alloy, the piston seal seated in a groove of the turbine frame vane;
- and
- a shim comprising a material that includes the nickel base alloy, the shim located in between the piston seal and the turbine frame vane,
- wherein the nickel base alloy includes a Ni3(Al,X) type precipitated phase in an amount greater than 40% by volume.
A system comprising:
- a turbine frame vane;
- a piston seal that includes a cobalt-based alloy, the piston seal seated in a groove of the turbine frame vane;
- and
- a shim located in between the piston seal and the turbine frame vane,
- wherein the alloy includes chromium at least in excess of 19% by weight, and
- wherein the shim is composed of a same material as the piston seal.
Dependencies are inferred from the claim text.