公开(公告)号：US20180112301A1

公开(公告)日：2018-04-26

申请号：US15786057

申请日：2017-10-17

Applicant: Rolls-Royce Corporation

Inventor： David C. Fairbourn ,  Sunny Chang ,  Johnny D. Grubbs

IPC: C23C4/02 ,  C23G1/10 ,  C23G1/08 ,  F01D5/00

CPC classification number: C23C4/02 ,  C04B41/009 ,  C04B41/5353 ,  C04B41/91 ,  C23G1/08 ,  C23G1/10 ,  F01D5/005 ,  F01D5/288 ,  F05D2300/6033 ,  C04B35/16

Abstract: A method for removing a coating including a rare earth silicate from a substrate including a ceramic or ceramic matrix composite may include contacting a coating comprising a rare earth silicate with a liquid comprising an active species. The active species may include at least one of a mineral acid or a base. The method also may include working the coating to cause removal of at least a portion of the coating.

公开(公告)号：US11976013B2

公开(公告)日：2024-05-07

申请号：US16138580

申请日：2018-09-21

Applicant: Rolls-Royce Corporation ,  Rolls-Royce plc

Inventor： Stephanie Gong ,  Ngunjoh Lawrence Ndamka ,  Matthew R. Gold ,  Li Li ,  Taylor K. Blair ,  Sunny Chang ,  Ann Bolcavage

IPC: C04B41/52 ,  B05B7/20 ,  C04B35/628 ,  C04B41/45 ,  C04B41/50 ,  C04B41/85 ,  C04B41/89 ,  F01D5/28

CPC classification number: C04B41/52 ,  B05B7/205 ,  C04B35/62807 ,  C04B35/6281 ,  C04B35/62813 ,  C04B35/62815 ,  C04B35/62828 ,  C04B35/62831 ,  C04B35/62884 ,  C04B41/4545 ,  C04B41/4582 ,  C04B41/5024 ,  C04B41/5031 ,  C04B41/5035 ,  C04B41/5042 ,  C04B41/5057 ,  C04B41/5068 ,  C04B41/507 ,  C04B41/85 ,  C04B41/89 ,  F01D5/288 ,  C04B2235/3208 ,  C04B2235/3224 ,  C04B2235/3248 ,  C04B2235/3813 ,  C04B2235/3886 ,  C04B41/5024 ,  C04B41/4527 ,  C04B41/5031 ,  C04B41/5045 ,  C04B2103/0021 ,  C04B41/52 ,  C04B41/5053 ,  C04B41/5057 ,  C04B41/5096 ,  C04B41/52 ,  C04B41/4527 ,  C04B41/5024 ,  C04B2103/0021

Abstract: An article may include a substrate including a ceramic matrix composite (CMC); a composite coating layer including a first coating material that includes a rare-earth disilicate and a second coating material that includes at least one of a rare-earth monosilicate, a CMAS-resistant material, or a high-temperature dislocating material, where the second coating material forms a substantially continuous phase in the composite coating layer.

公开(公告)号：US10851656B2

公开(公告)日：2020-12-01

申请号：US16141803

申请日：2018-09-25

Applicant: Rolls-Royce Corporation ,  Rolls-Royce PLC

Inventor： Stephanie Gong ,  Taylor K. Blair ,  Ngunjoh Lawrence Ndamka ,  Li Li ,  Sunny Chang ,  Ann Bolcavage

IPC: C04B41/52 ,  F01D5/28 ,  C23C28/04 ,  C23C28/00 ,  F01D25/00 ,  C04B41/89

Abstract: An article includes a substrate, a bond coat on the substrate, and a multilayer environmental barrier coating (EBC) on the bond coat. The multilayer EBC includes a first EBC layer defining a first thickness and a second EBC layer defining a second thickness. The first EBC layer includes a first rare earth disilicate and a first concentration of a sintering aid that includes alumina. The second EBC layer includes a second rare earth disilicate and a second concentration of the sintering aid that includes alumina, less than the first concentration of the sintering aid.

公开(公告)号：US10851026B2

公开(公告)日：2020-12-01

申请号：US16014660

申请日：2018-06-21

Applicant: Rolls-Royce Corporation ,  Rolls-Royce High Temperature Composites, Inc.

Inventor： Li Li ,  Sungbo Shim ,  Sunny Chang

IPC: C23C4/04 ,  C23C4/10 ,  C23C4/12 ,  C04B41/52 ,  C23C28/04 ,  B01J20/30

Abstract: A method of forming an impurity barrier layer on a CMC substrate may include introducing, to a heated plume of a thermal spray gun, a composite feedstock that includes a first coating material including a plurality of first particles; and a second coating material that may be different from the first coating material, where the second coating material at least partially encapsulates at least a portion of respective surfaces of the plurality of first particles; and directing, using the heated plume, at least the first coating material to a surface of a CMC substrate to deposit an impurity barrier layer including at least the first coating material.

公开(公告)号：US11053578B2

公开(公告)日：2021-07-06

申请号：US15786057

申请日：2017-10-17

Applicant: Rolls-Royce Corporation

Inventor： David C. Fairbourn ,  Sunny Chang ,  Johnny D. Grubbs

IPC: C23G1/08 ,  C23G1/10 ,  C23C4/02 ,  F01D5/28 ,  C04B41/00 ,  C04B41/53 ,  C04B41/91 ,  F01D5/00

Abstract: A method for removing a coating including a rare earth silicate from a substrate including a ceramic or ceramic matrix composite may include contacting a coating comprising a rare earth silicate with a liquid comprising an active species. The active species may include at least one of a mineral acid or a base. The method also may include working the coating to cause removal of at least a portion of the coating.

公开(公告)号：US20190092701A1

公开(公告)日：2019-03-28

申请号：US16138580

申请日：2018-09-21

Applicant: Rolls-Royce Corporation ,  Rolls-Royce plc

Inventor： Stephanie Gong ,  Ngunjoh Lawrence Ndamka ,  Matthew R. Gold ,  Li Li ,  Taylor K. Blair ,  Sunny Chang ,  Ann Bolcavage

IPC: C04B41/52 ,  C04B41/50 ,  C04B41/45 ,  B05B7/20

Abstract: An article may include a substrate including a ceramic matrix composite (CMC); a composite coating layer including a first coating material that includes a rare-earth disilicate and a second coating material that includes at least one of a rare-earth monosilicate, a CMAS-resistant material, or a high-temperature dislocating material, where the second coating material forms a substantially continuous phase in the composite coating layer.

公开(公告)号：US20190093498A1

公开(公告)日：2019-03-28

申请号：US16141803

申请日：2018-09-25

Applicant: Rolls-Royce Corporation ,  Rolls-Royce PLC

Inventor： Stephanie Gong ,  Taylor K. Blair ,  Ngunjoh Lawrence Ndamka ,  Li Li ,  Sunny Chang ,  Ann Bolcavage

IPC: F01D11/12 ,  C23C28/04

Abstract: An article includes a substrate, a bond coat on the substrate, and a multilayer environmental barrier coating (EBC) on the bond coat. The multilayer EBC includes a first EBC layer defining a first thickness and a second EBC layer defining a second thickness. The first EBC layer includes a first rare earth disilicate and a first concentration of a sintering aid that includes alumina. The second EBC layer includes a second rare earth disilicate and a second concentration of the sintering aid that includes alumina, less than the first concentration of the sintering aid.

公开(公告)号：US20190093497A1

公开(公告)日：2019-03-28

申请号：US16135036

申请日：2018-09-19

Applicant: Rolls-Royce Corporation ,  Rolls-Royce plc

Inventor： Ngunjoh Lawrence Ndamka ,  Li Li ,  Stephanie Gong ,  Sunny Chang ,  Ann Bolcavage ,  Taylor K. Blair

IPC: F01D11/12

Abstract: An article for use in a high-temperature environment that includes a substrate including a superalloy material, a ceramic, or a ceramic matrix composite, and an abradable coating on the substrate, the abradable coating including a rare earth silicate and a dislocator phase, the dislocator phase forms one or more distinct phase regions in the abradable coating and comprises at least one of hafnium diboride (HfB2), zirconium diboride (ZrB2), tantalum nitride (TaN or Ta2N), tantalum carbide (Ta2C) titanium diboride (TiB2), zirconium carbide (ZrC), hafnium carbide (HfC), tantalum diboride (TaB2), hafnium nitride (HfN), or niobium carbide (NbC).

公开(公告)号：US20180370863A1

公开(公告)日：2018-12-27

申请号：US16014660

申请日：2018-06-21

Applicant: Rolls-Royce Corporation ,  Rolls-Royce High Temperature Composites, Inc.

Inventor： Li Li ,  Sungbo Shim ,  Sunny Chang

IPC: C04B41/52 ,  C23C4/12 ,  C23C4/04 ,  B01J20/30

Abstract: A method of forming an impurity barrier layer on a CMC substrate may include introducing, to a heated plume of a thermal spray gun, a composite feedstock that includes a first coating material including a plurality of first particles; and a second coating material that may be different from the first coating material, where the second coating material at least partially encapsulates at least a portion of respective surfaces of the plurality of first particles; and directing, using the heated plume, at least the first coating material to a surface of a CMC substrate to deposit an impurity barrier layer including at least the first coating material.