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    DENSE ENVIRONMENTAL BARRIER COATING COMPOSITIONS
    4.
    发明专利
    DENSE ENVIRONMENTAL BARRIER COATING COMPOSITIONS 未知

    公开(公告)号：CA2995218A1

    公开(公告)日：2017-02-23

    申请号：CA2995218

    申请日：2016-08-17

    Applicant: GEN ELECTRIC

    Inventor： KIRBY GLEN HAROLD ,  WAN JULIN ,  RAMASAMY SIVAKUMAR

    IPC: C04B41/85 ,  C04B41/00 ,  C04B41/50 ,  C04B41/52 ,  C04B41/89 ,  C23C4/10 ,  C23C28/04 ,  F01D5/28

    Abstract: A coated substrate is provided that includes an environmental barrier coating on (e.g., directly on) a surface of a substrate (e.g., a ceramic matrix composite). The environmental barrier coating can include a barrier layer having a refractory material phase and a silicon-containing glass phase. The silicon-containing glass phase may be a continuous phase within the barrier layer (e.g., a breathable grain boundary of the barrier layer), or may be a plurality of discontinuous layers dispersed throughout the refractory material phase. The refractory material phase can include a rare earth silicate material having a rare earth component at a first atomic percent, while the silicon-containing glass phase comprises the rare earth component at a second atomic percent that is less than the first atomic percent. Methods are also provided for forming a barrier layer on a substrate.

    5.
    发明专利
    未知

    公开(公告)号：DE102005051489A1

    公开(公告)日：2006-04-27

    申请号：DE102005051489

    申请日：2005-10-19

    Applicant: GEN ELECTRIC

    Inventor： WAN JULIN ,  LOUREIRO SERGIO PAULO MARTINS ,  MANOHARAN MOHAN ,  SARRAFI-NOUR REZA ,  TAYLOR SETH THOMAS

    IPC: C04B35/515

    Abstract: Multiphase ceramic nanocomposites having at least three phases are disclosed. Each of the at least three phases has an average grain size less than about 100 nm. In one embodiment, the ceramic nanocomposite is substantially free of glassy grain boundary phases. In another embodiment, the multiphase ceramic nanocomposite is thermally stable up to a temperature of at least about 1500° C. Methods of making such multiphase ceramic nanocomposites are also disclosed.

    ARTICLE FOR HIGH TEMPERATURE SERVICE
    6.
    发明专利
    ARTICLE FOR HIGH TEMPERATURE SERVICE 未知

    公开(公告)号：CA2958298C

    公开(公告)日：2022-10-04

    申请号：CA2958298

    申请日：2015-08-18

    Applicant: GEN ELECTRIC

    Inventor： LUTHRA KRISHAN LAL ,  WAN JULIN ,  SARRAFI-NOUR REZA

    IPC: C04B41/85 ,  B32B18/00 ,  C04B35/80 ,  C04B41/89 ,  F01D5/28

    Abstract: An article for high temperature service is presented herein. One embodiment is an article including a substrate having a silicon-bearing ceramic matrix composite; and a layer disposed over the substrate, wherein the layer includes silicon and a dopant, the dopant including aluminum. In another embodiment, the article includes a ceramic matrix composite substrate, wherein the composite includes a silicon-bearing ceramic and a dopant, the dopant including aluminum; a bond coat disposed over the substrate, where the bond coat includes elemental silicon, a silicon alloy, a silicide, or combinations including any of the aforementioned; and a coating disposed over the bond coat, the coating including a silicate (such as an aluminosilicate or rare earth silicate), yttria-stabilized zirconia, or a combination including any of the aforementioned.

    ENVIRONMENTAL BARRIER COATINGS AND METHODS THEREFOR
    8.
    发明专利
    ENVIRONMENTAL BARRIER COATINGS AND METHODS THEREFOR 未知

    公开(公告)号：CA2893872C

    公开(公告)日：2018-11-06

    申请号：CA2893872

    申请日：2013-11-13

    Applicant: GEN ELECTRIC

    Inventor： MESCHTER PETER JOEL ,  JOHNSON CURTIS ALAN ,  SUNDARAM SAIRAM ,  WAN JULIN ,  LIPKIN DON MARK

    IPC: C23C28/04

    Abstract: An article includes a silicon-containing region including surface features on a surface thereof. The surface features include depressions, protuberances, or combinations thereof. At least one outer layer overlies the surface of the silicon- containing region. A constituent layer is provided on the surface of the silicon-containing region and between and contacting the silicon-containing region and the at least one outer layer. The constituent layer is formed by constituents of the silicon-containing region and is susceptible to creep within an operating environment of the article. The surface features physically interlock the at least one outer layer with the silicon- containing region through the constituent layer.

    SILICON-BASED MATERIALS CONTAINING BORON
    9.
    发明专利
    SILICON-BASED MATERIALS CONTAINING BORON 未知

    公开(公告)号：CA3036917A1

    公开(公告)日：2018-03-22

    申请号：CA3036917

    申请日：2017-09-14

    Applicant: GEN ELECTRIC

    Inventor： KIRBY GLEN HAROLD ,  WAN JULIN

    IPC: C04B41/00 ,  C04B41/80 ,  C04B41/89

    Abstract: A ceramic component is provided that includes a silicon-based layer comprising a silicon-containing material (e.g., a silicon metal and/or a silicide) and a boron-doped refractory compound, such as about 0.001%to about 85%by volume of the boron-doped refractory compound (e.g., about 1%to about 60%by volume of the boron-doped refractory compound). A coated component is also provided that includes a CMC component defining a surface; a bond coating directly on the surface of the CMC component, with the bond coating comprises a silicon-containing material and a boron-doped refractory compound (e.g., about 0.1%to about 25%of the boron-doped refractory compound); a thermally grown oxide layer on the bond coating; and an environmental barrier coating on the thermally grown oxide layer.

    METHOD FOR COATING REMOVAL
    10.
    发明专利
    METHOD FOR COATING REMOVAL 未知

    公开(公告)号：CA2943451A1

    公开(公告)日：2017-04-08

    申请号：CA2943451

    申请日：2016-09-29

    Applicant: GEN ELECTRIC

    Inventor： WAN JULIN ,  CAO HONGBO

    IPC: C04B41/91

    Abstract: A method for removing a coating from an article includes heating an article to a processing temperature. The article includes a first material in contact with a second material, the first material comprising silicon, and the second material comprising an oxide comprising silicon. The heating is performed in an environment having a partial pressure of oxygen that is less than an equilibrium partial pressure of oxygen for chemical equilibrium between the first material and the second material at the processing temperature.

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