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    RESERVOIR FEED METHOD OF MAKING CERAMIC COMPOSITE STRUCTURES AND STRUCTURES MADE THEREBY
    1.
    发明专利
    RESERVOIR FEED METHOD OF MAKING CERAMIC COMPOSITE STRUCTURES AND STRUCTURES MADE THEREBY 未知

    公开(公告)号：ZA876909B

    公开(公告)日：1988-03-17

    申请号：ZA876909

    申请日：1987-09-15

    Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

    Inventor： MARC STEVENS NEWKIRK ,  HAROLD DANIEL LESHER ,  RATNESH KUMAR DWIVEDI ,  ROBERT CAMPBELL KANTNER

    IPC: B28B7/34 ,  C04B35/10 ,  C04B35/622 ,  C04B35/65 ,  C04B35/653 ,  B22D19/14 ,  C04B35/71 ,  C04B ,  C01F ,  B22D ,  C23C ,  B28D

    Abstract: A method for producing a self-supporting ceramic composite structure comprising a ceramic matrix embedding a filler (38) includes oxidizing a parent metal to form a polycrystalline material comprising the oxidation reaction product of the parent metal with an oxidant and, optionally, one or more metallic constituents, and the filler (38) embedded by the matrix. The method includes heating the parent metal to provide a first source (36) of molten parent metal and a reservoir (34) of molten parent metal and contacting the first source (36) of molten parent metal with a permeable bedding of filler (38). The first source (36) of molten parent metal is reacted with the oxidant to form the oxidation reaction product and is replenished from the reservoir (34) as the reacting continues for a time sufficient to grow the oxidation reaction product to a desired boundary and thereby embed at least a portion of the bedding of filler (38) within the oxidation reaction product to form the ceramic composite structure. The bedding of filler (38) may have any suitable shape, including that of a hollow body, the interior of which is contacted by the first source (36) of molten parent metal to grow the oxidation reaction product through the shaped, hollow body of filler.

    ASSEMBLY FOR MAKING CERAMIC COMPOSITE STRUCTURES AND METHOD OF USING THE SAME
    5.
    发明专利
    ASSEMBLY FOR MAKING CERAMIC COMPOSITE STRUCTURES AND METHOD OF USING THE SAME 未知

    公开(公告)号：ZA88202B

    公开(公告)日：1988-06-30

    申请号：ZA88202

    申请日：1988-01-13

    Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

    Inventor： MARC STEVENS NEWKIRK ,  HAROLD DANIEL LESHER

    IPC: C04B35/10 ,  B22F3/12 ,  B28B13/00 ,  C04B35/622 ,  C04B35/65 ,  C04B35/653 ,  C04B35/76 ,  C04B35/80 ,  C22C29/12 ,  C01B ,  C04B

    Abstract: An assembly for the preparation of ceramic composite structures includes a segmented container (12) within which a permeable filler is retained and a parent metal body (20) is contacted with the bed (18) of permeable filler. The segmented container (12) is comprised of one or more segments made of a material, such as an Inconel alloy, which has a coefficient of thermal expansion which is significantly greater than that of the filler. The segments are arranged to define between or among them one or more expansion joints which are effective to accommodate circumferential thermal expansion of the segments to thereby inhibit or prevent volumetric expansion of the container (12). A method of forming ceramic composite structures includes heating the resulting assembly to melt and oxidize the parent metal, (20), e.g., aluminum, to form a polycrystalline material comprising an oxidation reaction product which grows through the mass of filler to embed it and thus form the composite structure.

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