CMAS resistant thermal barrier coatings

    公开(公告)号:US10179945B2

    公开(公告)日:2019-01-15

    申请号:US14107225

    申请日:2013-12-16

    Abstract: The present application provides Calcia-Magnesia-Alumina-Silica (CMAS) (or molten silicate) resistant thermal barrier coatings (TBC). The coatings include elongate growth domains of non-equiaxed, randomly arranged overlapping grains or splats. The elongate growth domains include overlapping individual, randomly distributed splats of tough and soft phases. In some embodiments, the elongate growth domains are formed via air plasma spray. In some embodiments, the tough phases are at least partially stabilized zirconia and/or hafnia compositions, and the soft phases are CMAS (or molten silicate) reactive or resistant compositions. Within each elongate growth domain, the mixture of the tough and soft phases act together to limit penetration of CMAS and also provide sufficient domain toughness to minimize cracking forces produced during crystallization of infiltrated CMAS. The soft phases may react with the CMAS and increase its melting point, increase its viscosity, and reduce the destabilization of the tough phases.

    METHODS OF COATING A SURFACE AND ARTICLES WITH COATED SURFACE
    7.
    发明申请
    METHODS OF COATING A SURFACE AND ARTICLES WITH COATED SURFACE 审中-公开
    表面涂层方法和涂层表面的制品

    公开(公告)号:US20140178641A1

    公开(公告)日:2014-06-26

    申请号:US13723301

    申请日:2012-12-21

    CPC classification number: B32B5/16 C23C4/11 C23C4/134 C23C4/18 Y10T428/24372

    Abstract: A method of coating a surface is provided. The method comprises feeding a feedstock to a thermal spray torch, the feedstock comprising a liquid, disposing the feedstock on a substrate by thermal spray under conditions selected to produce a textured surface comprising a hierarchical structure, wherein the hierarchical structure comprises agglomerations of at least partially melted and solidified particles derived from the feedstock with individual at least partially melted and solidified particles derived from the feedstock disposed on a surface of the agglomerations; and applying a surface energy modification material over the textured surface. An article comprising a component having a coated surface is also provided.

    Abstract translation: 提供涂覆表面的方法。 该方法包括将原料进料到热喷枪,原料包括液体,通过热喷涂将原料设置在基底上,所述条件被选择以产生包含分级结构的纹理表面,其中分层结构包括至少部分 衍生自原料的熔融和固化的颗粒具有衍生自凝聚物表面上的原料的至少部分熔融和固化的颗粒; 以及在所述纹理化表面上施加表面能改性材料。 还提供了包含具有涂覆表面的部件的制品。

    CMAS RESISTANT THERMAL BARRIER COATINGS
    10.
    发明申请

    公开(公告)号:US20200024718A1

    公开(公告)日:2020-01-23

    申请号:US16218885

    申请日:2018-12-13

    Abstract: The present application provides Calcia-Magnesia-Alumina-Silica (CMAS) (or molten silicate) resistant thermal barrier coatings (IBC). The coatings include elongate growth domains of non-equiaxed, randomly arranged overlapping grains or splats. The elongate growth domains include overlapping individual, randomly distributed splats of tough and soft phases. In some embodiments, the elongate growth domains are formed via air plasma spray. In some embodiments, the tough phases are at least partially stabilized zirconia and/or hafnia compositions, and the soft phases are CMAS (or molten silicate) reactive or resistant compositions. Within each elongate growth domain, the mixture of the tough and soft phases act together to limit penetration of CMAS and also provide sufficient domain toughness to minimize cracking forces produced during crystallization of infiltrated CMAS. The soft phases may react with the CMAS and increase its melting point, increase its viscosity, and reduce the destabilization of the tough phases.

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