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    • 3. 发明申请
    • POROSITY CONTROL IN CERAMIC COMPOSITE BODIES
    • 陶瓷复合体中的孔隙控制
    • WO1992000931A2
    • 1992-01-23
    • PCT/US1991004948
    • 1991-07-12
    • LANXIDE TECHNOLOGY COMPANY, LPCLAAR, Terry, DennisJOHNSON, William, Bayard
    • LANXIDE TECHNOLOGY COMPANY, LP
    • C04B35/65
    • C04B35/58078B22F7/004C04B35/58071C04B35/652C04B38/06C04B2235/3821C04B2235/404C04B2235/5436C04B2235/77C04B2235/80C04B2235/96C04B2235/963C22C1/08C22C29/14C22C2001/081C22C2001/1089
    • 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.
    • 制备自支撑体和新产品的新工艺。 在这些更具体的方面中,本发明涉及生产具有可控孔隙率和分级性能的自支承体并且包含一种或多种含硼化合物,例如硼化物或硼化物和碳化物的方法。 在一个实施方案中,该方法包括使熔融形式的粉末状基体金属与包含硼给体材料和碳给体材料(例如碳化硼 和任选地一种或多种惰性填料以形成身体。 在另一个实施方案中,粉末状基体金属和熔融基体金属体或浴与包含硼给体材料和碳给体材料(例如, 例如,碳化硼)和任选的一种或多种惰性填料以在所得到的体内产生渐变效果。 另外,可燃添加剂(例如明胶,谷物淀粉,蜡等)可以与包含例如碳化硼的床或物质混合 协助生产和调节孔隙度。 当本发明的自支承体在与先前形成的陶瓷,金属或复合体接触时形成时,可以在两个体之间形成结合,从而形成大复合体。
    • 9. 发明申请
    • FILLER MATERIALS FOR METAL MATRIX COMPOSITES
    • 金属基复合材料填充材料
    • WO1991017276A2
    • 1991-11-14
    • PCT/US1991003161
    • 1991-05-07
    • LANXIDE TECHNOLOGY COMPANY, LPNEWKIRK, Marc, StevensMORTENSON, Mark, Gordon
    • LANXIDE TECHNOLOGY COMPANY, LP
    • C22C01/09
    • C22C1/1036B22F1/025C22C2001/1063
    • The present invention relates to a novel process for forming a filler material which can be used in various metal matrix composite formation processes for forming metal matrix composite bodies. Particularly, an infiltration enhancer and/or an infiltration enhancer precursor and/or an infiltrating atmosphere are in communication with a filler material or a preform, at least at some point during the process, which permits molten matrix metal to spontaneously infiltrate the filler material or preform. Such spontaneous infiltration occurs without the requirement for the application of any pressure or vacuum. The amount of matrix metal provided is sufficient only to coat, to a desired thickness, substantially all of the filler material. The coated filler material is thereafter comminuted for use in any desired metal matrix composite formation process.
    • 本发明涉及可用于形成金属基质复合体的各种金属基复合材料形成方法中的填充材料的形成方法。 特别地,渗透增强剂和/或渗透增强剂前体和/或渗透气氛至少在该过程中的某一点与填料或预型体连通,这允许熔融基质金属自发地渗透填料或 预制棒。 发生这种自发性渗透,而不需要施加任何压力或真空。 提供的基体金属的量足以仅涂覆到所需的厚度,基本上全部填充材料。 然后将涂覆的填充材料粉碎以用于任何所需的金属基质复合物形成工艺。