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    LOW POROSITY ABRADABLE COATING
    22.
    发明申请
    LOW POROSITY ABRADABLE COATING 审中-公开

    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).

    THERMAL BARRIER COATINGS FOR COMPONENTS IN HIGH-TEMPERATURE MECHANICAL SYSTEMS
    23.
    发明申请
    THERMAL BARRIER COATINGS FOR COMPONENTS IN HIGH-TEMPERATURE MECHANICAL SYSTEMS 审中-公开

    公开(公告)号：US20190017177A1

    公开(公告)日：2019-01-17

    申请号：US16034801

    申请日：2018-07-13

    Applicant: Rolls-Royce Corporation ,  Rolls-Royce North American Technologies, Inc.

    Inventor： Matthew R. Gold ,  Michael Cybulsky ,  Stephanie Gong ,  Li Li

    IPC: C23C28/04 ,  C23C4/11 ,  C23C4/134 ,  F01D5/28

    Abstract: An article that includes a substrate; a first layer including yttria and zirconia or hafnia, where the first layer has a columnar microstructure and includes predominately the zirconia or hafnia; a second layer on the first layer, the second layer including zirconia or hafnia, ytterbia, samaria, and at least one of lutetia, scandia, ceria, neodymia, europia, and gadolinia, where the second layer includes predominately zirconia or hafnia, and where the second layer has a columnar microstructure; and a third layer on the second layer, the third layer including zirconia or hafnia, ytterbia, samaria, and a rare earth oxide including at least one of lutetia, scandia, ceria, neodymia, europia, and gadolinia, where the third layer has a dense microstructure and has a lower porosity than the second layer.

    IMPURITY BARRIER LAYER FOR CERAMIC MATRIX COMPOSITE SUBSTRATE
    24.
    发明申请
    IMPURITY BARRIER LAYER FOR CERAMIC MATRIX COMPOSITE SUBSTRATE 审中-公开

    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.

    CMAS-resistant barrier coatings
    28.
    发明授权
    CMAS-resistant barrier coatings 有权

    公开(公告)号：US11952317B2

    公开(公告)日：2024-04-09

    申请号：US16657504

    申请日：2019-10-18

    Applicant: Rolls-Royce Corporation ,  Rolls-Royce plc

    Inventor： Ngunjoh Lawrence Ndamka ,  Li Li ,  Stephanie Gong ,  Ann Bolcavage ,  Taylor K. Blair ,  Robert Golden

    IPC: C04B41/50 ,  C04B41/45 ,  F01D5/28

    CPC classification number: C04B41/5024 ,  C04B41/4543 ,  F01D5/284 ,  F01D5/288

    Abstract: An example article includes a substrate and a barrier coating on the substrate. The barrier coating includes a matrix including a rare-earth disilicate extending from an inner interface facing the substrate to an outer surface opposite the inner interface. The barrier coating includes a graded volumetric distribution of rare-earth oxide rich (REO-rich) phase regions in the matrix along a direction from the inner interface to the outer surface. The graded volumetric distribution defines a first volumetric density of the REO-rich phase regions at a first region of the matrix adjacent the outer surface. The graded volumetric distribution defines a second volumetric density of the REO-rich phase regions at a second region of the matrix adjacent the inner surface. The second volumetric density is different from the first volumetric density. An example technique includes forming the barrier coating on the substrate of a component.

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