Mischmetal oxide TBC
    8.
    发明申请
    Mischmetal oxide TBC 失效
    混合氧化物TBC

    公开(公告)号:US20050196635A1

    公开(公告)日:2005-09-08

    申请号:US10792161

    申请日:2004-03-03

    Abstract: The present invention is a turbine engine component comprising a superalloy substrate, a bond coat overlying the substrate having a thickness in the range of about 0.0005 inch to about 0.005 inch, a thin alumina scale overlying the bond coat, and a thermal barrier coating (TBC) overlying the thin alumina scale, the TBC having a thickness in the range of about 0.0025 inch to about 0.010 inch, and comprising at least mischmetal oxide. The present invention is also a method for the application of a thermal barrier coating to a superalloy turbine engine component comprising the steps of: providing an electron beam physical vapor deposition apparatus, providing a turbine engine component comprising a surface to be coated, providing an oxide ingot comprising mischmetal oxide and another oxide material selected from the group consisting of yttria-stablized zirconia, zirconia, yttria, hafnia, at least one other rare earth oxide, and combinations thereof, placing the component and the ingot into the apparatus, drawing a vacuum within the apparatus, forming a melt pool on the ingot, dispersing mischmetal oxide vapors and yttria-stabilized zirconia vapors, depositing the mischmetal oxide vapors and the yttria-stabilized zirconia vapors onto the surface to be coated, said deposition forming a thermal barrier coating having a thickness in the range of about 0.0025 inch to about 0.010 inch.

    Abstract translation: 本发明是一种涡轮发动机部件,其包括超合金基板,覆盖在基板上的粘合涂层,其厚度在约0.0005英寸至约0.005英寸的范围内,覆盖在粘合涂层上的薄氧化铝标尺和热障涂层(TBC ),所述TBC的厚度在约0.0025英寸至约0.010英寸的范围内,并且至少包含混合稀土氧化物。 本发明也是一种将热障涂层应用于超级合金涡轮发动机部件的方法,包括以下步骤:提供电子束物理气相沉积装置,提供包括待涂覆表面的涡轮发动机部件,提供氧化物 铸锭包括混合氧化物和选自氧化钇稳定氧化锆,氧化锆,氧化钇,铪,至少一种其他稀土氧化物的其它氧化物材料及其组合,将组分和锭放入设备中,抽真空 在所述装置内,在所述锭上形成熔池,分散混合氧化物蒸气和氧化钇稳定的氧化锆蒸汽,将所述混合氧化物蒸气和所述氧化钇稳定的氧化锆蒸气沉积在待涂覆的表面上,所述沉积形成具有 厚度在约0.0025英寸至约0.010英寸的范围内。

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