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    THERMAL BARRIER COATINGS INCLUDING CMAS-RESISTANT THERMAL BARRIER COATING LAYERS
    21.
    发明申请
    THERMAL BARRIER COATINGS INCLUDING CMAS-RESISTANT THERMAL BARRIER COATING LAYERS 有权
    包含CMAS耐热热障涂层的热障涂层

    公开(公告)号：US20130224457A1

    公开(公告)日：2013-08-29

    申请号：US13811361

    申请日：2011-07-19

    Applicant: Kang N. Lee

    Inventor： Kang N. Lee

    IPC: F01D5/28

    CPC classification number: F01D5/284 ,  C09D1/02 ,  C23C28/042 ,  C23C28/048 ,  F01D5/288 ,  Y10T428/12549 ,  Y10T428/24967 ,  Y10T428/26

    Abstract: An article may include a superalloy substrate and a calcia-magnesia-alumina-silicate (CMAS)-resistant thermal barrier coating (TBC) layer overlying the superalloy substrate. In some embodiments, the CMAS-resistant TBC layer includes between about 50 wt. % and about 90 wt. % of a TBC composition and between about 10 wt. % and about 50 wt. % of a CMAS-resistant composition. In some examples, the TBC composition includes at least one of yttria-stabilized zirconia, yttria-stabilized hafnia, zirconia stabilized with at least three rare earth oxides, or hafnia stabilized with at least three rare earth oxides. In some examples, the CMAS-resistant composition includes alumina, silica, and an oxide of at least one of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Yb, Dy, Ho, Er, Tm, Tb, or Lu.

    Abstract translation: 制品可以包括超合金基底和覆盖在超合金基底上的氧化钙 - 氧化镁 - 氧化铝 - 硅酸盐（CMAS） - 抗性热障涂层（TBC）层。 在一些实施方案中，CMAS抗性TBC层包含约50wt。 ％和约90wt。 ％的TBC组合物和约10wt。 ％和约50wt。 ％的CMAS抗性组合物。 在一些实例中，TBC组合物包括氧化钇稳定的氧化锆，氧化钇稳定的铪，用至少三种稀土氧化物稳定的氧化锆或至少三种稀土氧化物稳定的铪中的至少一种。 在一些实例中，CMAS抗性组合物包括氧化铝，二氧化硅和Sc，Y，La，Ce，Pr，Nd，Pm，Sm，Eu，Gd，Yb，Dy，Ho，Er中的至少一种的氧化物， Tm，Tb或Lu。

    Multilayer article having stabilized zirconia outer layer and chemical barrier layer
    24.
    发明授权
    Multilayer article having stabilized zirconia outer layer and chemical barrier layer 失效
    具有稳定的氧化锆外层和化学屏障层的多层制品

    公开(公告)号：US06733908B1

    公开(公告)日：2004-05-11

    申请号：US10191050

    申请日：2002-07-08

    Applicant: Kang N. Lee ,  Narottam P. Bansal

    Inventor： Kang N. Lee ,  Narottam P. Bansal

    IPC: B32B900

    CPC classification number: C04B35/488 ,  C04B35/185 ,  C04B35/52 ,  C04B41/009 ,  C04B41/4527 ,  C04B41/5042 ,  C04B41/52 ,  C04B41/89 ,  C04B2111/00405 ,  C04B2235/3246 ,  C04B2235/3463 ,  C04B2235/80 ,  C23C28/04 ,  F01D5/288 ,  Y02T50/67 ,  Y10T428/12674 ,  Y10T428/265 ,  C04B41/5096 ,  C04B41/5037 ,  C04B41/5024 ,  C04B41/5044 ,  C04B41/522 ,  C04B35/565 ,  C04B35/584 ,  C04B35/806

    Abstract: A multilayer article includes a substrate that includes at least one of a ceramic compound and a Si-containing metal alloy. An outer layer includes stabilized zirconia. Intermediate layers are located between the outer layer and the substrate and include a mullite-containing layer and a chemical barrier layer. The mullite-containing layer includes 1) mullite or 2) mullite and an alkaline earth metal aluminosilicate. The chemical barrier layer is located between the mullite-containing layer and the outer layer. The chemical barrier layer includes at least one of mullite, hafnia, hafnium silicate and rare earth silicate (e.g., at least one of RE2SiO5 and RE2Si2O7 where RE is Sc or Yb). The multilayer article is characterized by the combination of the chemical barrier layer and by its lack of a layer consisting essentially of barium strontium aluminosilicate between the mullite-containing layer and the chemical barrier layer. Such a barium strontium aluminosilicate layer may undesirably lead to the formation of a low melting glass or unnecessarily increase the layer thickness with concomitant reduced durability of the multilayer article. In particular, the chemical barrier layer may include at least one of hafnia, hafnium silicate and rare earth silicate.

    Abstract translation: 多层制品包括包含陶瓷化合物和含Si金属合金中的至少一种的基材。 外层包括稳定的氧化锆。 中间层位于外层和基材之间，并且包括含莫来石的层和化学阻挡层。 含莫来石的层包括1）莫来石或2）莫来石和碱土金属硅铝酸盐。 化学阻挡层位于含莫来石层和外层之间。 化学阻隔层包括莫来石，铪，硅酸铪和稀土硅酸盐中的至少一种（例如，RE为Sc或Yb的RE 2 SiO 5和RE 2 Si 2 O 7中的至少一种）。 多层制品的特征在于化学屏障层的组合，以及在莫来石含有层和化学屏障层之间缺少基本上由钡硅酸锶硅酸盐组成的层。 这种钡锶铝硅酸盐层可能不期望地导致形成低熔点玻璃或不必要地增加层厚度，同时降低多层制品的耐久性。 特别地，化学屏障层可以包括铪，硅酸铪和稀土硅酸盐中的至少一种。

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