ARTICLE AND METHOD OF MAKING A CERAMIC ARTICLE AND COMPOSITES
    2.
    发明申请
    ARTICLE AND METHOD OF MAKING A CERAMIC ARTICLE AND COMPOSITES 审中-公开
    制造陶瓷制品和复合材料的文章和方法

    公开(公告)号:WO2011019725A3

    公开(公告)日:2011-04-28

    申请号:PCT/US2010045029

    申请日:2010-08-10

    Inventor: OLEVSKY EUGENE A

    Abstract: The present invention is a technological sequence which is composed of uniaxial freezing with control solution composition, followed by freeze-drying, followed by sintering, and followed by infiltration. The invention enables the manufacturing of functionally graded composites. These composites can include spatially distributed phases of ceramics, metals, polymers, glasses, and their combinations as long as the composite matrix material is originally in the form of powders. During uniaxial freezing, the diameter of crystals growing from the suspension (and, thus, the diameter of the voids formed after freeze-drying) is dependent on the controllable rate of cooling, pressure and the changeable chemical composition of the suspension liquid phase. Thereby a structure with conic voids can be created. After following sintering and infiltration, the produced composite (e.g., ceramic-metal composite) will have a specially distributed concentration of the second phase in the composite matrix, that is, it will have a functionally-graded structure.

    Abstract translation: 本发明是由单轴冷冻与对照溶液组成组成的技术顺序,然后冷冻干燥,然后烧结,然后渗透。 本发明能够制造功能梯度的复合材料。 这些复合材料可以包括陶瓷,金属,聚合物,玻璃及其组合的空间分布相,只要复合基质材料最初是粉末形式即可。 在单轴冷冻过程中,从悬浮液生长的晶体的直径(因此,冷冻干燥后形成的空隙的直径)取决于可控的冷却速度,压力和悬浮液相的化学组成。 从而可以创建具有锥形空隙的结构。 在烧结和渗透之后,所制备的复合材料(例如陶瓷 - 金属复合材料)将具有复合基质中第二相的特殊分布浓度,即具有功能梯度结构。

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