Invention Grant
- Patent Title: Multilayer abradable coatings for high-performance systems
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Application No.: US17113235Application Date: 2020-12-07
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Publication No.: US11506073B2Publication Date: 2022-11-22
- Inventor: Jun Shi , Li Li , Ted J. Freeman
- Applicant: Rolls-Royce North American Technologies, Inc. , Rolls-Royce Corporation
- Applicant Address: US IN Indianapolis; US IN Indianapolis
- Assignee: Rolls-Royce North American Technologies, Inc.,Rolls-Royce Corporation
- Current Assignee: Rolls-Royce North American Technologies, Inc.,Rolls-Royce Corporation
- Current Assignee Address: US IN Indianapolis; US IN Indianapolis
- Agency: Shumaker & Sieffert, P.A.
- Main IPC: F01D11/12
- IPC: F01D11/12 ; F01D5/28 ; F01D11/14

Abstract:
An example high-performance system includes an example high-performance component including a substrate and a multilayer abradable track adjacent to the substrate. The abradable track includes a plurality of alternating layers along a thickness of the abradable track. The plurality of alternating layers includes at least one relatively porous abradable layer and at least one relatively dense layer. A porosity of the relatively dense layer is lower than that of the at least one relatively porous abradable layer. The example high-performance system may include a rotating component configured to contact and abrade the multilayer abradable track. An example technique for forming the multilayer abradable track includes thermal spraying a first precursor composition toward the substrate to form a relatively porous abradable layer of a layer pair of a plurality of layer pairs of the multilayer abradable track, and a second precursor composition to form a relatively dense layer of the pair.
Public/Granted literature
- US20210108533A1 MULTILAYER ABRADABLE COATINGS FOR HIGH-PERFORMANCE SYSTEMS Public/Granted day:2021-04-15
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