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    Environmental barrier coating with porous bond coat layer
    25.
    发明授权
    Environmental barrier coating with porous bond coat layer 有权

    公开(公告)号：US11466589B2

    公开(公告)日：2022-10-11

    申请号：US16722050

    申请日：2019-12-20

    Applicant: United Technologies Corporation

    Inventor： Michael R. Kracum ,  Xia Tang ,  Richard Wesley Jackson ,  Zhongfen Ding ,  James T. Beals

    IPC: F01D25/08 ,  B05D3/00 ,  C04B41/52 ,  C04B41/89 ,  C04B41/50

    Abstract: A gas turbine engine article includes a substrate and an environmental barrier coating (EBC) system disposed on the substrate. The EBC system includes, from the substrate, a dense bond coat layer, a porous bond coat layer, and a topcoat layer in contact with the porous bond coat layer at an interface. The porous bond coat layer includes a matrix, oxygen-scavenging gas-evolution particles dispersed through the matrix, and engineered buffer pores. The oxygen-scavenging gas-evolution particles react with oxygen and generate a gaseous byproduct that diffuses through the interface to escape the EBC system. The engineered buffer pores buffer diffusion of gaseous byproduct to the interface by retaining at least a portion of the gaseous byproduct.

    ENVIRONMENTAL BARRIER COATING
    26.
    发明申请
    ENVIRONMENTAL BARRIER COATING 有权

    公开(公告)号：US20210246082A1

    公开(公告)日：2021-08-12

    申请号：US16785085

    申请日：2020-02-07

    Applicant: UNITED TECHNOLOGIES CORPORATION

    Inventor： Richard Wesley Jackson ,  Michael R. Kracum ,  Xia Tang ,  James T. Beals

    IPC: C04B41/50 ,  C04B41/45 ,  C04B41/52 ,  C04B41/86 ,  C04B41/89

    Abstract: An article includes a ceramic-based substrate and a barrier layer on the ceramic-based substrate. The barrier layer includes a matrix phase and gettering particles in the matrix phase. The gettering particles with an aspect ratio greater than one are aligned such that a maximum dimension of the gettering particles extends along an axis that is generally parallel to the substrate. The barrier layer includes a dispersion of diffusive particles in the matrix phase. A composite material and a method of applying a barrier layer to a substrate are also disclosed.

    ENVIRONMENTAL BARRIER COATING WITH POROUS BOND COAT LAYER
    27.
    发明申请
    ENVIRONMENTAL BARRIER COATING WITH POROUS BOND COAT LAYER 有权

    公开(公告)号：US20210189904A1

    公开(公告)日：2021-06-24

    申请号：US16722050

    申请日：2019-12-20

    Applicant: United Technologies Corporation

    Inventor： Michael R. Kracum ,  Xia Tang ,  Richard Wesley Jackson ,  Zhongfen Ding ,  James T. Beals

    IPC: F01D25/08 ,  B05D3/00

    Abstract: A gas turbine engine article includes a substrate and an environmental barrier coating (EBC) system disposed on the substrate. The EBC system includes, from the substrate, a dense bond coat layer, a porous bond coat layer, and a topcoat layer in contact with the porous bond coat layer at an interface. The porous bond coat layer includes a matrix, oxygen-scavenging gas-evolution particles dispersed through the matrix, and engineered buffer pores. The oxygen-scavenging gas-evolution particles react with oxygen and generate a gaseous byproduct that diffuses through the interface to escape the EBC system. The engineered buffer pores buffer diffusion of gaseous byproduct to the interface by retaining at least a portion of the gaseous byproduct.

    CERAMIC MATRIX COMPOSITE COMPONENT WITH MODIFIED THERMAL EXPANSION AND METHOD FOR PRODUCING THE SAME
    28.
    发明申请
    CERAMIC MATRIX COMPOSITE COMPONENT WITH MODIFIED THERMAL EXPANSION AND METHOD FOR PRODUCING THE SAME 审中-公开

    公开(公告)号：US20200216365A1

    公开(公告)日：2020-07-09

    申请号：US16240062

    申请日：2019-01-04

    Applicant: United Technologies Corporation

    Inventor： Richard Wesley Jackson

    IPC: C04B35/80

    Abstract: A ceramic matrix composite (CMC) material component is provided that includes a CMC material and an environmental barrier coating (EBC). The CMC material includes first fibers, a matrix, and at least one coefficient of thermal expansion (CTE) increasing additive. The first fibers include a first material having a first CTE value. The matrix includes a second material having a second CTE value. The at least one CTE increasing additive has a third CTE value. The EBC is disposed on at least one exposed surface of the CMC material and has a fourth CTE value. The third CTE value is greater than the first CTE value and the second CTE value, and the at least one CTE increasing additive is present within the CMC material in an amount that elevates a CTE value of the CMC material above the first CTE value or the second CTE value.

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