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    • 5. 发明授权
    • Method for making self-supporting composite bodies
    • 制造自支撑复合体的方法
    • US5855955A
    • 1999-01-05
    • US815499
    • 1997-03-11
    • Terry Dennis ClaarVilupanur Alwar RaviMichael Allan RichmondPhilip Joseph RoachBarry Robert Rossing
    • Terry Dennis ClaarVilupanur Alwar RaviMichael Allan RichmondPhilip Joseph RoachBarry Robert Rossing
    • C04B35/65C04B41/50C04B41/87C23C10/08C23C26/00C23C16/30
    • C04B41/009C04B35/652C04B41/5057C04B41/87C23C10/08C23C26/00
    • 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 and the solid oxidant-containing material. The inventive process can be utilized to form bodies having substantially homogeneous compositions, graded compositions, and macrocomposite bodies.In a preferred embodiment, a substance comprising a filler material and a solid oxidant, preferably an admixture of particulates, is coated onto at least a portion of the solid oxidant-containing material. Such a technique is particularly advantageous for forming relatively thick reaction product layers which might not otherwise develop to the desired thickness using the original "directed growth" embodiment. In a particularly preferred embodiment, the solid oxidant and the solid oxidant-containing material have the same chemical composition, and the filler material and the reaction product have the same chemical composition.
    • 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 母体金属和含固体氧化剂的材料之间的反应。 本发明的方法可以用于形成具有基本上均匀的组合物,分级组合物和大复合体的本体。 在优选的实施方案中,将包含填料和固体氧化剂,优选颗粒混合物的物质涂覆在至少一部分含固体氧化剂的材料上。 这种技术对于形成相对较厚的反应产物层是特别有利的,其可以使用原始的“定向生长”实施例不会另外发展成所需的厚度。 在特别优选的实施方案中,固体氧化剂和含固体氧化剂的材料具有相同的化学组成,并且填料和反应产物具有相同的化学组成。
    • 10. 发明授权
    • Ceramic composite and methods of making the same
    • 陶瓷复合材料及其制作方法
    • US5434113A
    • 1995-07-18
    • US68456
    • 1993-05-28
    • Jack A. KuszykChristopher R. KennedyRalph R. Ballario, Jr.Craig B. ShumakerEric J. Van Voorhees
    • Jack A. KuszykChristopher R. KennedyRalph R. Ballario, Jr.Craig B. ShumakerEric J. Van Voorhees
    • B22D41/32C04B35/65
    • B22D41/32C04B35/652Y10T29/49988
    • There is provided a method for producing a self-supporting ceramic composite comprising (1) a ceramic matrix obtained by oxidation of an aluminum zinc alloy to form a polycrystalline oxidation reaction product of the metal with an oxidant, and (2) one or more fillers embedded by the matrix. The metal alloy and permeable mass of filler having at least one defined surface boundary are oriented relative to each other so that formation of the oxidation reaction product will occur into said mass of filler and in a direction towards said defined surface boundary. On heating the metal to a first temperature above its melting point but below the melting point of said oxidation reaction product to form a body of molten parent metal, the molten metal reacts with said oxidant to form said oxidation reaction product which infiltrates said mass of filler to said defined surface boundary. The resulting infiltrated mass is heated to a second temperature in order to remove or oxidize at least a substantial portion of one or more residual non-oxidized metallic constituents from or in said infiltrated mass without substantial formation of said oxidation reaction product beyond said defined surface boundary, thereby producing a self-supporting ceramic composite.
    • 提供一种自支撑陶瓷复合体的制造方法,其特征在于,包括:(1)通过氧化铝锌合金得到的陶瓷基体,形成金属与氧化剂的多晶氧化反应产物,(2)一种或多种填料 由矩阵嵌入。 具有至少一个限定表面边界的金属合金和可渗透质量的填料相对于彼此定向,使得氧化反应产物的形成将发生在所述填料块中并朝向所述限定的表面边界的方向。 在将金属加热到高于其熔点但低于所述氧化反应产物的熔点的第一温度以形成熔融母体金属体时,熔融金属与所述氧化剂反应形成所述氧化反应产物,其渗透所述填料填料 到所述限定的表面边界。 将所得的渗透物质加热至第二温度,以从所述渗透物质中或所述渗透物质中除去或氧化至少大部分的一种或多种残留的非氧化金属成分,而不会在所述限定的表面边界之上基本形成所述氧化反应产物 ,从而制备自支撑陶瓷复合材料。