Abradable coatings for high-performance systems
AssigneesRolls-Royce North American Technologies Inc., Rolls-Royce Cornoration
InventorsJun Shi, Li Li, Ted J. Freeman
Life of this patent
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Abstract
An example high-performance system may include an example high-performance component. The high-performance component may include a substrate defining a channel. The channel defines a leading ramp and a trailing ramp. The example high-performance component includes an abradable track between the leading and the trailing ramps. The abradable track includes a porous abradable composition. The example high-performance system may include a rotating component configured to contact and abrade the abradable track. An example technique for forming the abradable track includes thermal spraying a precursor composition at the channel to form the abradable track.
Claims18
A high-performance component comprising:
- a substrate defining a channel, wherein the channel defines a leading ramp and a trailing ramp;
- and
- an abradable track between the respective leading and the trailing ramps, wherein the abradable track comprises a porous abradable composition, wherein the high-performance component defines a major surface adjacent the channel, wherein at least one of the leading ramp and the trailing ramp is inclined at an angle of at least 15° relative to a plane defined by the major surface, and wherein the at least one of the leading ramp and the trailing ramp is inclined at an angle of at most 60° relative to the plane defined by the major surface.
A method for forming an abradable track on a high-performance component, the method comprising:
- thermal spraying a precursor composition at a channel defined by a substrate of the high-performance component to form the abradable track between leading and trailing ramps defined by the channel, wherein the abradable track comprises a porous abradable composition, wherein the high-performance component defines a major surface adjacent the channel, wherein at least one of the leading ramp and the trailing ramp is inclined at an angle of at least 15° relative to a plane defined by the major surface, and wherein the at least one of the leading and the trailing ramps are inclined at an angle of at most 60° relative to the plane defined by the major surface.
Dependencies are inferred from the claim text.