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US 12,473,977 B2Granted
Methods for surface modification of mid-turbine frame piston seal rings and interfacing components to achieve low friction and high wear resistance
AssigneeRtx Corporation
InventorHamidreza Mohseni
Life of this patent
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Abstract
The present disclosure provides assemblies, systems and methods for surface modification of piston seal rings and interfacing components. More particularly, the present disclosure provides assemblies, systems and methods for surface modification of mid-turbine frame (MTF) piston seal rings and interfacing components in gas turbine engines to achieve low and/or reduced friction, and/or high and/or improved wear resistance.
Claims17
A piston seal ring assembly comprising:
- a piston seal ring configured to be in contact with a mid-turbine frame vane component and an interfacing component;
- wherein the piston seal ring includes a glaze layer of oxide particles fabricated from a surface treatment or surface modification, wherein the glaze layer is disposed on a cobalt-molybdenum-chromium-silicon based coating material, and
- wherein the mid-turbine frame vane component or the interfacing component includes a second glaze layer of oxide particles fabricated from a surface treatment or surface modification.
A piston seal ring assembly comprising:
- a piston seal ring configured to be in contact with a mid-turbine frame vane component and an interfacing component;
- wherein the mid-turbine frame component includes a first glaze layer of oxide particles fabricated from the surface treatment or surface modification, wherein the first glaze layer is disposed on a cobalt-molybdenum-chromium-silicon based coating material, and the interfacing component includes a second glaze layer of oxide particles fabricated from the surface treatment or surface modification.
A surface modification method comprising:
- fabricating, via a surface treatment or a surface modification a piston seal ring to include a first glaze layer of oxide particles, wherein the first glaze layer is disposed on a cobalt-molybdenum-chromium-silicon based coating material,
- fabricating via a surface treatment or a surface modification a mid-turbine frame vane component or an interfacing component to include a second glaze layer of oxide particles;
- and
- positioning the piston seal ring to be in contact with the mid-turbine frame vane component and the interfacing component.
1 more element
Dependencies are inferred from the claim text.