Gas turbine blade
    4.
    发明申请
    Gas turbine blade 失效
    燃气轮机叶片

    公开(公告)号:US20040057832A1

    公开(公告)日:2004-03-25

    申请号:US10670807

    申请日:2003-09-25

    IPC分类号: F03B003/12

    摘要: Disclosed is a gas turbine blade (1) having a ceramic heat-insulating layer (17). The ceramic heat-insulating layer (17) consists of 10-95% wt. % magnesium aluminate, 5-90 wt. % magnesium oxide and 0-20 wt. % aluminum oxide. Magnesium oxide particles are incorporated into a matrix made of spindle-shaped magnesium aluminate, enabling the thermal expansion coefficient of the ceramic heat-insulating layer (17) to be adapted in a particularly suitable manner to a metallic base body (15) of the gas turbine blade (1). The ceramic heat-insulating layer (17) also has a porosity which is greater that 3 vol. %, thereby guaranteeing sufficiently low heat conductivity.

    摘要翻译: 公开了一种具有陶瓷绝热层(17)的燃气轮机叶片(1)。 陶瓷绝热层(17)由10-95重量% 铝酸镁,5-90重量% %氧化镁和0-20重量% %氧化铝。 将氧化镁颗粒结合到由锭状铝酸镁制成的基体中,使得陶瓷绝热层(17)的热膨胀系数能够特别适合于气体的金属基体(15) 涡轮叶片(1)。 陶瓷绝热层(17)也具有大于3体积的孔隙率。 %,从而保证足够低的导热性。