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    • 5. 发明授权
    • Method for producing composite materials and examples of such composite materials
    • 生产复合材料的方法和这种复合材料的实例
    • US06737015B1
    • 2004-05-18
    • US09555777
    • 2000-11-01
    • Guenter KnollGert LindemannFriederike LindnerMatthias Wiedmaier
    • Guenter KnollGert LindemannFriederike LindnerMatthias Wiedmaier
    • B22F312
    • C04B35/58092C04B35/5935C04B35/645
    • A method for manufacturing composite materials from a parent substance containing silicon nitride and metal silicide, having fixed electrical properties. The molded articles are made, virtually with their final contours, prior to a sintering operation. The parent substance containing Si3N4 and a metal silicide is subjected to a gas pressure sintering in a nitrogenous atmosphere. The metal silicide is of the form Me5Si3, where Me is a metal. As a function of a sintering temperature, a lower limit of partial nitrogen pressures is selected so that Si3N4 is stable at the lower limit and an upper limit of the partial nitrogen pressures is selected so that Me5Si3 is stable at the upper limit. The resulting composite material is a silicon-containing composite material made of Si3N4 and the metal silicide. The metal silicide is selected from the group of Nb5Si3, V5Si3, Ta5Si3 and W5Si3.
    • 从含有氮化硅和金属硅化物的母体制造复合材料的方法,具有固定的电性能。 在烧结操作之前,模制品实际上具有其最终轮廓。 含有Si 3 N 4和金属硅化物的母体在含氮气氛中进行气压烧结。 金属硅化物是Me5Si3的形式,其中Me是金属。 作为烧结温度的函数,选择部分氮压力的下限,使得Si 3 N 4在下限下稳定,并且选择部分氮压力的上限使得Me 5 Si 3在上限稳定。 所得到的复合材料是由Si 3 N 4和金属硅化物制成的含硅复合材料。 金属硅化物选自Nb5Si3,V5Si3,Ta5Si3和W5Si3。