Method of producing cavity containing ceramic material
    1.
    发明公开
    Method of producing cavity containing ceramic material 失效
    一种制备含空腔的陶瓷材料的方法。

    公开(公告)号:EP0234704A2

    公开(公告)日:1987-09-02

    申请号:EP87300409.7

    申请日:1987-01-19

    IPC分类号: C04B35/65

    摘要: A method of producing a self-supporting ceramic composite body having therein at least one cavity which inversely replicates the geometry of a positive mold of parent metal, includes embedding the mold of parent metal within a conformable bed of filler to provide therein a cavity shaped and filled by the mold. The assembly is heated to melt the parent metal mold, e.g., an aluminum parent metal mold, and contacted with an oxidant to oxidize the molten parent metal to form a polycrystalline material which grows through the surroundings of filler, the molten metal being drawn through the growing polycrystalline material to be oxidized at the interface between the oxidant and previously formed oxidation reaction product whereby the cavity formerly filled by the mold of parent metal is eventually evacuated by the metal. There remains behind a cavity whose shape inversely replicates the original shape of the mold. The method provides ceramic composite articles having therein at least one cavity inversely replicating the shape of the mold which supplied the parent metal for oxidation.

    Method of producing cavity containing ceramic material
    5.
    发明公开
    Method of producing cavity containing ceramic material 失效
    生产包含陶瓷材料的孔的方法

    公开(公告)号:EP0234704A3

    公开(公告)日:1988-04-06

    申请号:EP87300409

    申请日:1987-01-19

    IPC分类号: C04B35/65

    摘要: A method of producing a self-supporting ceramic composite body having therein at least one cavity which inversely replicates the geometry of a positive mold of parent metal, includes embedding the mold of parent metal within a conformable bed of filler to provide therein a cavity shaped and filled by the mold. The assembly is heated to melt the parent metal mold, e.g., an aluminum parent metal mold, and contacted with an oxidant to oxidize the molten parent metal to form a polycrystalline material which grows through the surroundings of filler, the molten metal being drawn through the growing polycrystalline material to be oxidized at the interface between the oxidant and previously formed oxidation reaction product whereby the cavity formerly filled by the mold of parent metal is eventually evacuated by the metal. There remains behind a cavity whose shape inversely replicates the original shape of the mold. The method provides ceramic composite articles having therein at least one cavity inversely replicating the shape of the mold which supplied the parent metal for oxidation.

    A method of making ceramic composites
    8.
    发明公开
    A method of making ceramic composites 失效
    Verfahren zur Herstellung keramischer Verbundwerkstoffe。

    公开(公告)号:EP0261068A1

    公开(公告)日:1988-03-23

    申请号:EP87630188.8

    申请日:1987-09-10

    IPC分类号: C04B35/65 C04B35/71

    摘要: The invention relates to a method for producing ceramic composites obtained by oxidation of an aluminum parent metal to form a polycrystalline ceramic material by providing a filler having a coating of a silicon source on at least a portion of said filler different in composition from the primary composition of said filler, said silicon source possessing intrinsic doping properties. A body of molten parent metal, adjacent a mass of the filler material, reacts with an oxidant to form an oxidation reaction product which infiltrates the adjacent mass of filler thereby forming the ceramic composite.

    摘要翻译: 本发明涉及一种生产陶瓷复合材料的方法,所述陶瓷复合材料通过氧化铝母体金属形成多晶陶瓷材料,该方法是通过提供一种填料,该填料具有硅组分的至少一部分与主要组成不同的填料 的所述填料,所述硅源具有固有的掺杂特性。 与填料物质相邻的熔融母体金属体与氧化剂反应形成氧化反应产物,该氧化反应产物渗透邻近的填料块,从而形成陶瓷复合材料。

    Method for producing self-supporting ceramic bodies with graded properties
    9.
    发明公开
    Method for producing self-supporting ceramic bodies with graded properties 失效
    Verfahren zur Herstellung selbsttragenderKeramikkörpermit abgestuften Eigenschaften。

    公开(公告)号:EP0261063A1

    公开(公告)日:1988-03-23

    申请号:EP87630183.9

    申请日:1987-09-10

    IPC分类号: C04B35/65

    CPC分类号: C04B35/652

    摘要: A method is disclosed for producing a ceramic body by oxidation of a parent metal, the ceramic body having a graded microstructure characterized by a plurality of zones differing from each other in one or more properties. The zones in the ceramic body are attained by altering the process conditions during formation of said ceramic body such that a zone of the oxidation reaction product formed posterior to said altering has one or more properties different from a zone of the oxidation reaction product formed anterior to said altering.

    摘要翻译: 公开了一种用于通过母体金属的氧化来生产陶瓷体的方法,陶瓷体具有以一个或多个性质彼此不同的多个区域为特征的梯度微结构。 陶瓷体中的区域是通过在形成所述陶瓷体期间改变工艺条件来实现的,使得在所述改变后面形成的氧化反应产物的区域具有与氧化反应产物的区域不同的一个或多个特性, 说改了

    Surface bonding of ceramic bodies
    10.
    发明公开
    Surface bonding of ceramic bodies 失效
    Verbinden von keramischenKörpernan ihrenOberflächen。

    公开(公告)号:EP0261059A2

    公开(公告)日:1988-03-23

    申请号:EP87630179.7

    申请日:1987-09-03

    IPC分类号: C04B37/00 C04B35/65

    摘要: Ceramic bodies (2,4) are bonded together via a layer of an oxidation reaction product of a molten metal, which metal is present in one or both of the ceramic bodies (2,4) prior to bonding. At least one of the ceramic bodies (2,4) comprises a ceramic product formed by the oxidation reaction of molten parent metal (e.g., alumina from molten aluminum) and grown as molten metal is trans­ported through, and oxidized on the surface of, its own oxidation product. One or both of the ceramic bodies (2,4) used in the bonding process contains surface-accessible channels of residual metal, i.e., metal channels which have resulted from molten-metal transport during the ceramic growth process. When the suitably assembled cera­mic bodies (2,4) are heated in an oxidizing atmosphere at a temperature above the melting point of the residual metal, molten metal at the surface of the ceramic body reacts with the atmospheric oxidant so as to bond the facing surfaces together by a layer of the oxidation reaction product of the molten metal formed therebetween.

    摘要翻译: 陶瓷体(2,4)通过熔融金属的氧化反应产物层结合在一起,该金属在粘合之前存在于一个或两个陶瓷体(2,4)中。 陶瓷体(2,4)中的至少一个包括通过熔融母体金属(例如,来自熔融铝的氧化铝)的氧化反应形成的陶瓷产品,并且当熔融金属在其表面被输送并氧化时, 自己的氧化产品。 用于接合工艺中的一个或两个陶瓷体(2,4)包含残留金属的表面可接近通道,即在陶瓷生长过程中由熔融金属输送引起的金属通道。 当适当组装的陶瓷体(2,4)在高于残余金属的熔点的温度的氧化气氛中加热时,陶瓷体表面的熔融金属与大气氧化剂反应,从而将相对表面 一起形成在其间形成的熔融金属的氧化反应产物层。