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    METHOD OF MAKING CERAMIC COMPOSITE ARTICLES WITH SHAPE REPLICATED SURFACES AND ARTICLES OBTAINED THEREBY
    43.
    发明专利
    METHOD OF MAKING CERAMIC COMPOSITE ARTICLES WITH SHAPE REPLICATED SURFACES AND ARTICLES OBTAINED THEREBY 未知

    公开(公告)号：ZA873961B

    公开(公告)日：1987-12-02

    申请号：ZA873961

    申请日：1987-06-03

    Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

    Inventor： MARC STEVENS NEWKIRK

    IPC: C04B35/622 ,  B28B7/34 ,  C04B35/10 ,  C04B35/65 ,  C04B ,  B28B

    Abstract: A method for producing a self-supporting ceramic composite body having a negative pattern which inversely replicates the positive pattern of a parent metal precursor (2) having thereon a positive pattern section (4,6,8,9) which is emplaced in conforming engagement with a bed of conformable filler (14). The parent metal precursor (2), which also has a non-replicating section, is melted and reacted with an oxidant to form a polycrystalline oxidation reaction product which grows primarily only from the positive pattern section of the parent metal precursor (2) and through the filler (14). The molten parent metal is drawn through the growing polycrystalline material and oxidized at the interface between the oxidant and previously formed oxidation reaction product. The reaction is continued for sufficient time to at least partially embed the filler (14) within the oxidation reaction product and form the ceramic composite body containing a negative pattern which inversely replicates the positive pattern of the parent metal precursor (2).

    45.
    发明专利
    未知

    公开(公告)号：ES2038201T3

    公开(公告)日：1993-07-16

    申请号：ES87630133

    申请日：1987-07-28

    Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

    Inventor： NEWKIRK, MARC S. ,  URQUHART, ANDREW W. ,  ZWICKER, HARRY R.

    IPC: C04B35/622 ,  C04B35/10 ,  C04B35/65 ,  C04B41/51 ,  C04B41/88 ,  C22C1/10 ,  C22C29/12 ,  C23C10/22

    Abstract: A method of producing self-supporting ceramic bodies (10) having a modified metal-containing component includes first providing a self-supporting ceramic body (10) comprising (i) a polycrystalline oxidation reaction product (12) formed upon oxidation of a molten parent metal precursor with an oxidant, and (ii) an interconnected metal-containing component (14) at least partially accessible from one or more surfaces (15) of said ceramic body (10). The surface or surfaces (15) of the ceramic body (10) is contacted with a quantity of foreign metal different from said interconnected metal-containing component (14) at a temperature and for a time sufficient to allow for interdiffusion, whereby at least a portion of said metal-containing component (14) is displaced by said foreign metal. The resulting ceramic body, having an altered metal-containing component, exhibits modified or improved properties.

    CERAMIC COMPOSITE AND METHODS OF MAKING THE SAME
    47.
    发明专利
    CERAMIC COMPOSITE AND METHODS OF MAKING THE SAME 未知

    公开(公告)号：ZA88142B

    公开(公告)日：1988-06-28

    申请号：ZA88142

    申请日：1988-01-11

    Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

    Inventor： JACK ANDREW KUSZYK ,  CHRISTOPHER ROBIN KENNEDY

    IPC: C04B35/622 ,  B22D41/08 ,  B22D41/32 ,  C04B35/10 ,  C04B35/65 ,  C22C29/12 ,  C01B ,  C04B

    Abstract: 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 (10) with an oxidant, and (2) one or more fillers (12) embedded by the matrix. The metal alloy (10) and permeable mass of filler (12) having at least one defined surface boundary (14) are oriented relative to each other so that formation of the oxidation reaction product will occur into said mass of filler (12) and in a direction towards said defined surface boundary (14). On heating the metal (10) 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 (12) to said defined surface boundary (14). The resulting infiltrated mass is heated to a second temperature in order to remove or oxidize at least a substantial portion of any residual non-oxidized metallic constituents from or in said infiltrated mass without substantial formation of said oxidation reaction product beyond said defined surface boundary (14), thereby producing a self-supporting ceramic composite.

    RESERVOIR FEED METHOD OF MAKING CERAMIC COMPOSITE STRUCTURES AND STRUCTURES MADE THEREBY
    49.
    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.

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