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    • 72. 发明申请
    • Carbon-carbon reinforced melt infiltrated ceramic matrix composites
    • 碳碳增强熔体渗透陶瓷基复合材料
    • US20040207133A1
    • 2004-10-21
    • US10824746
    • 2004-04-15
    • Brian WilliamsRobert Benander
    • C04B035/83C04B035/565
    • C04B35/83C04B35/56C04B35/5622C04B35/62855C04B35/6286C04B35/65C04B35/806C04B2235/404C04B2235/428C04B2235/5248C04B2235/5264C04B2235/614C04B2235/80
    • A carbon fiber-carbon matrix reinforced ceramic composite comprises a carbon fiber-carbon matrix reinforcement embedded within a ceramic matrix. The ceramic matrix does not penetrate into the carbon fiber-carbon matrix reinforcement to any significant degree. The carbide matrix is a formed in situ solid carbide of at least one metal having a melting point above about 1850 degrees centigrade. At least when the composite is intended to operate between approximately 1500 and 2000 degrees centigrade for extended periods of time the solid carbide with the embedded reinforcement is formed first by reaction infiltration. Molten silicon is then diffused into the carbide. The molten silicon diffuses preferentially into the carbide matrix but not to any significant degree into the carbon-carbon reinforcement. Where the composite is intended to operate between approximately 2000 and 2700 degrees centigrade for extended periods of time such diffusion of molten silicon into the carbide is optional and generally preferred, but not essential.
    • 碳纤维 - 碳基强化陶瓷复合材料包括嵌入陶瓷基体内的碳纤维 - 碳基体增强材料。 陶瓷基体不会以任何显着的程度渗透到碳纤维 - 碳基体中。 碳化物基体是至少一种熔点高于约1850摄氏度的金属形成的原位固体碳化物。 至少当复合材料长时间在约1500至2000摄氏度之间运行时,首先通过反应渗透形成具有嵌入增强材料的整体碳化物。 熔融硅然后扩散到碳化物中。 熔融硅优先扩散到碳化物基体中,但不会在任何程度上扩散到碳 - 碳增强物中。 如果复合材料旨在在大约2000至2700摄氏度下长时间运行,则将熔融硅扩散到碳化物中是可选的,并且通常是优选的,但不是必需的。