PLASMA SPRAY PHYSICAL VAPOR DEPOSITION DEPOSITED MULTILAYER, MULTI-MICROSTRUCTURE ENVIRONMENTAL BARRIER COATING
    6.
    发明公开
    PLASMA SPRAY PHYSICAL VAPOR DEPOSITION DEPOSITED MULTILAYER, MULTI-MICROSTRUCTURE ENVIRONMENTAL BARRIER COATING 审中-公开
    等离子喷涂物理气相沉积多层膜,多微结构环境阻挡涂层

    公开(公告)号:EP3199507A1

    公开(公告)日:2017-08-02

    申请号:EP17152007.5

    申请日:2017-01-18

    IPC分类号: C04B41/89 F01D5/28

    摘要: An article includes a substrate defining at least one at least partially obstructed surface. The substrate includes at least one of a ceramic or a ceramic matrix composite. The article also includes a multilayer, multi-microstructure environmental barrier coating on the at least partially obstructed substrate. The multilayer, multi-microstructure environmental barrier coating includes a first layer comprising a rare earth disilicate and a substantially dense microstructure; and a second layer on the first layer. The second layer includes a columnar microstructure and at least one of a rare earth monosilicate or a thermal barrier coating composition comprising a base oxide comprising zirconia or hafnia; a primary dopant comprising ytterbia; a first co-dopant comprising samaria; and a second co-dopant comprising at least one of lutetia, scandia, ceria, gadolinia, neodymia, or europia.

    摘要翻译: 制品包括限定至少一个至少部分阻塞的表面的基材。 衬底包括陶瓷或陶瓷基体复合物中的至少一种。 该制品还包括在至少部分阻塞的基底上的多层,多微结构环境屏障涂层。 该多层,多微结构环境阻挡涂层包括含有稀土二硅酸盐的第一层和基本致密的微观结构; 和第一层上的第二层。 第二层包括柱状微结构和稀土单硅酸盐或热障涂层组合物中的至少一种,所述组合物包含含氧化锆或二氧化铪的基础氧化物; 包含镱的主要掺杂剂; 包含撒马利亚的第一共掺杂剂; 以及第二共掺杂剂,其包含鲁特西亚,斯堪迪亚,二氧化铈,氧化钆,钕血红蛋白或欧洲红血球中的至少一种。