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    • 6. 发明申请
    • METHOD OF CONTROLLING INFILTRATION OF COMPLEX-SHAPED CERAMIC-METAL COMPOSITE ARTICLES AND THE PRODUCTS PRODUCED THEREBY
    • 复合成型陶瓷复合材料及其生产产品的控制方法
    • WO1998026102A1
    • 1998-06-18
    • PCT/US1997021588
    • 1997-11-21
    • THE DOW CHEMICAL COMPANYFOX, Richard, T.HAN, ChanPYZIK, Aleksander, J.NILSSON, Robert, T.
    • THE DOW CHEMICAL COMPANY
    • C22C01/10
    • G11B5/7315C04B41/5155C04B41/52C04B41/88C04B41/89C22C1/1036C22C2001/1021C22C2001/1057G11B5/8404
    • A process for preparing complex-shaped, ceramic-metal composite articles, comprising: (a) contacting a non-wettable powder that is non-wetting to a metal to be used for infiltration with a shaped ceramic body to form a layer of the non-wettable powder on one or more surfaces of the shaped ceramic body, wherein the shaped ceramic body has a region where there is no layer of the non-wettable powder, and (b) infiltration the shaped ceramic body with the metal through the region or regions where there is no layer of the non-wettable powder, such that a complex-shaped ceramic-metal composite comprising one or more metal phases and one or more ceramic phases is formed, wherein the article has substantially the net shape of the shaped ceramic body and undesirable regions of excess metal on the surface and undesirable phases within the complex-shaped ceramic-metal composite article near the surface are located only in the region or regions where there is no layer of the non-wettable powder. The process of the invention allows the preparation of complex-shaped ceramic-metal composite articles with undesirable regions of excess metal and undesirable phases on the surface(s), of, or within, the article only in the regions where there is, or was, no layer of non-wettable powder. The process of the invention allows the preparation of a complex-shaped ceramic-metal composite article which requires little or no machining of the surface(s) to achieve a finished article. A complex-shaped ceramic-metal composite article is prepared which contains few undesirable regions of excess metal and undesirable phases.
    • 一种制备复杂形状的陶瓷 - 金属复合制品的方法,包括:(a)将不湿润的非可润湿粉末与用于渗透的金属与成形陶瓷体接触以形成非 - 在成形陶瓷体的一个或多个表面上的可润湿粉末,其中成形陶瓷体具有不存在不可湿性粉末层的区域,(b)使成形陶瓷体与金属渗透穿过该区域或 其中不存在不可湿性粉末层的区域,使得形成包含一个或多个金属相和一个或多个陶瓷相的复合形状的陶瓷 - 金属复合材料,其中制品具有基本上成形陶瓷的净形状 表面上的多余金属的主体和不需要的区域以及表面附近的复合陶瓷 - 金属复合制品内的不期望的相位仅位于不具有不可湿性粉末层的区域或区域中。 本发明的方法允许制备复合形状的陶瓷 - 金属复合制品,其具有不需要的过量金属区域和不期望的相,仅在制品的表面上或内部存在, ,无层不可湿粉。 本发明的方法允许制备复杂形状的陶瓷 - 金属复合制品,其需要很少或不需要加工表面以实现最终制品。 制备复杂形状的陶瓷 - 金属复合制品,其包含少量不需要的过量金属和不期望的相的区域。