POROSITY CONTROL IN CERAMIC COMPOSITE BODIES
    3.
    发明申请
    POROSITY CONTROL IN CERAMIC COMPOSITE BODIES 审中-公开
    陶瓷复合材料中的孔隙度控制

    公开(公告)号:WO9200931A3

    公开(公告)日:1992-09-03

    申请号:PCT/US9104948

    申请日:1991-07-12

    Abstract: This invention relates generally to novel methods of preparing self-supporting bodies and to the novel products made thereby. In its more specific aspects, this invention relates to methods of producing self-supporting bodies having controlled porosity and graded properties and comprising one or more boron-containing compounds, e.g., a boride or a boride and a carbide. The method comprises, in one embodiment, reacting a powdered parent metal, in molten form, with a bed or mass comprising a boron donor material and a carbon donor material (e.g., boron carbide) and, optionally, one or more inert fillers, to form the body. In another embodiment, both of a powdered parent metal and a body or pool of molten parent metal are induced to react with a bed or mass comprising a boron donor material and a carbon donor material (e.g., boron carbide) and, optionally, one or more inert fillers to produce a grading effect in the resultant body. In addition, combustible additives (e.g., gelatin, corn starch, wax, etc.) can be mixed with the bed or mass comprising, for example, a boron carbide material to aid in porosity production and control. When the self-supporting body of the instant invention is formed while in contact with a previously formed ceramic, metal or composite body, a bond can be formed between the two bodies, thus creating a macrocomposite body.

    COMPOSITE BODIES AND METHODS FOR MAKING SAME
    5.
    发明申请
    COMPOSITE BODIES AND METHODS FOR MAKING SAME 审中-公开
    复合体及其制造方法

    公开(公告)号:WO9200256A2

    公开(公告)日:1992-01-09

    申请号:PCT/US9104762

    申请日:1991-06-25

    Abstract: This invention relates generally to a novel directed metal oxidation process which is utilized to produce self-supporting bodies. In some of the more specific aspects of the invention, a parent metal (e.g., a parent metal vapor) is induced to react with at least one solid oxidant-containing material to result in the directed growth of a reaction product which is formed from a reaction between the parent metal (46) and the solid oxidant-containing material (47). The inventive process can be utilized to form bodies having substantially homogeneous compositons, graded compositions, and macrocomposite bodies.

    Abstract translation: 本发明一般涉及用于生产自支撑体的新颖的定向金属氧化方法。 在本发明的一些更具体的方面中,诱导母体金属(例如母体金属蒸汽)与至少一种含固体氧化剂的材料反应,导致反应产物的直接生长,所述反应产物由 母体金属(46)和含固体氧化剂的材料(47)之间的反应。 本发明的方法可以用于形成具有基本均匀的组合物,分级组合物和大复合体的本体。

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