THERMAL/ENVIRONMENTAL BARRIER COATING SYSTEM FOR SILICON-CONTAINING MATERIALS
    7.
    发明申请
    THERMAL/ENVIRONMENTAL BARRIER COATING SYSTEM FOR SILICON-CONTAINING MATERIALS 有权
    含硅材料的热/环境阻隔涂层系统

    公开(公告)号:US20060280962A1

    公开(公告)日:2006-12-14

    申请号:US11160185

    申请日:2005-06-13

    IPC分类号: B32B17/06 B32B19/00 B32B9/00

    摘要: A coating system for Si-containing materials, particularly Si-based composites used to produce articles exposed to high temperatures. The coating system is a compositionally-graded thermal/environmental barrier coating (T/EBC) system that includes an intermediate layer containing yttria-stabilized hafnia (YSHf) and mullite, alumina and/or an aluminosilicate, which is used in combination with an inner layer between a Si-containing substrate and the intermediate layer and a thermal-insulating top coat overlying the intermediate layer. The intermediate layer provides environmental protection to the silicon-containing substrate, and has a coefficient of thermal expansion between that of the top coat and that of the inner layer so as to serve as a transition layer therebetween. The intermediate layer is particular well suited for use in combination with an inner layer of an alkaline earth metal aluminosilicate (such as BSAS) and a top coat formed of YSZ or YSHf.

    摘要翻译: 用于含Si材料的涂层系统,特别是用于生产暴露于高温的制品的Si基复合材料。 涂层系统是一种组成分级的热/环境屏障涂层(T / EBC)系统,其包括含有氧化钇稳定的铪(YSHf)和莫来石,氧化铝和/或铝硅酸盐的中间层,其与内部 在含Si衬底和中间层之间的层和覆盖中间层的绝热顶涂层。 中间层为含硅基材提供环境保护,并且具有顶涂层与内层层之间的热膨胀系数,以便在其间作为过渡层。 中间层特别适用于与碱土金属硅铝酸盐(如BSAS)的内层和由YSZ或YSHf形成的顶层组合使用。