CMAS-RESISTANT THERMAL BARRIER COATING FOR AERO-ENGINE PARTS

    公开(公告)号:EP4242343A1

    公开(公告)日:2023-09-13

    申请号:EP23157128.2

    申请日:2023-02-16

    摘要: A method of preparing a coated article is disclosed. The method includes depositing a coating composition on a surface of a substrate to form a calcia-magnesia-alumina-silicate (CMAS)-resistant thermal barrier coating (TBC) thereon and give the coated article. The coating composition comprises from about 3 to about 50 wt.% of one or more rare-earth oxides, from about 45 to about 96.5 wt.% zirconia, and from about 0.5 to about 4 wt.% alumina, each based on the total weight of the coating composition. As deposited, the alumina is distributed substantially homogeneously throughout the CMAS-resistant TBC. A coated part prepared with the method is also disclosed.