Surface bonding of ceramic bodies
    8.
    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。