Oxidation-resistant interfacial coating for fiber-reinforced ceramic
    2.
    发明授权
    Oxidation-resistant interfacial coating for fiber-reinforced ceramic 失效
    用于纤维增强陶瓷的抗氧化界面涂层

    公开(公告)号:US06322889B1

    公开(公告)日:2001-11-27

    申请号:US09296286

    申请日:1999-04-22

    IPC分类号: D02G300

    摘要: A ceramic-matrix composite having a multilayered interfacial coating adapted to protect the reinforcing fibers from long-term oxidation, while allowing these to bridge the wake of advancing cracks in the matrix, is provided by selectively mismatching materials within adjacent layers of the interfacial coating, the materials having different coefficients of thermal expansion so that a low toughness interface region is created to promote crack deflection either within an interior layer of the mismatched interfacial coating or between adjacent layers of the mismatched interfacial coating.

    摘要翻译: 一种具有多层界面涂层的陶瓷基质复合材料,其通过在界面涂层的相邻层内选择性地错配材料来提供适合于保护增强纤维免于长期氧化的陶瓷基质复合材料,同时允许这些桥接桥接基体中前进裂纹的尾迹, 该材料具有不同的热膨胀系数,使得产生低韧性界面区域以促进在错配的界面涂层的内层内或在错配的界面涂层的相邻层之间的裂纹偏转。