公开(公告)号：US10752978B2

公开(公告)日：2020-08-25

申请号：US15696516

申请日：2017-09-06

Applicant: ROLLS-ROYCE plc

Inventor： Mark C. Hardy ,  Grant J. Gibson ,  Gavin J. Baxter ,  Yogiraj Pardhi

IPC: C22C19/05 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  B23K26/342 ,  B23K15/00 ,  C22C1/02

Abstract: The novel nickel-base superalloy useful in an additive manufacturing process or a powder-based manufacturing process includes the following composition in wt %: Cr 8.0-8.5; Co 9.0-9.5; Mo 0.4-0.6; W 9.3-9.7; Ta 2.9-3.6; Al 4.9-5.6; Ti 0.2-1.0; Hf 0-0.05; C 0.005-0.03; B 0.005-0.02; Zr 0.005-0.1; Nb 0.2-1; Mn 0-0.6; and S 0-0.002 (≤20 ppm); the balance nickel and incidental elements and unavoidable impurities.

公开(公告)号：US11458591B2

公开(公告)日：2022-10-04

申请号：US16104502

申请日：2018-08-17

Applicant: ROLLS-ROYCE plc

Inventor： Charles R H Johnson ,  Grant J. Gibson

IPC: B24C11/00 ,  B24C1/10 ,  B24C1/08 ,  B33Y40/00 ,  B22F10/20 ,  B22C9/18 ,  B29C67/04 ,  B22F3/24 ,  B22F5/04 ,  B22F5/00 ,  B33Y10/00 ,  B24C1/00

Abstract: A method for the manufacture of a component comprises the following steps, in sequence using an additive layer manufacturing process to build a three-dimensional net shape of the component; performing a first abrasive blasting operation on a region of a surface of the component; and performing a second abrasive blasting operation on the region. The angle of incidence of the abrasive on the surface in the first abrasive blasting operation is less than the angle of incidence of the abrasive on the surface in the second abrasive blasting operation.

公开(公告)号：US11053859B2

公开(公告)日：2021-07-06

申请号：US16298611

申请日：2019-03-11

Applicant: ROLLS-ROYCE plc

Inventor： Grant J. Gibson

IPC: F02C7/30 ,  F02C3/04 ,  G01M15/02 ,  G01M15/14 ,  F01D21/00

Abstract: A method of determining the service life of a gas turbine engine component comprises providing, within a gas turbine engine, a component having an air washed surface, the component comprises a metal, wherein the air washed surface receives a supply of cooling air from a chamber within the gas turbine engine. The method also comprises mounting a metallic test sample within the chamber so as to be located in the supply of air which is delivered to the air washed surface. The metallic test sample is constructed of the same metal as the component. The method further comprises removing the metallic test sample and determining the degree of corrosion of the metallic test sample.

公开(公告)号：US10934860B2

公开(公告)日：2021-03-02

申请号：US15602436

申请日：2017-05-23

Applicant: ROLLS-ROYCE plc

Inventor： Grant J. Gibson ,  Matthew Hancock ,  Lloyd Pallett

IPC: F01D11/12 ,  F01D5/28 ,  F01D5/02 ,  F01D5/20 ,  C25D7/00 ,  C25D15/00 ,  C25D5/12

Abstract: A gas turbine engine component made of a nickel-based superalloy, the gas turbine engine component comprising a protective coating. The protective coating includes an inner diffusion barrier layer including any one or any combination of elements selected from the group consisting of platinum, palladium, tantalum, tungsten, hafnium and iridium, and an outer layer of hard material formed of hard particles embedded in a matrix.