Method of making ceramic articles having channels therein and articles
made thereby
    3.
    发明授权
    Method of making ceramic articles having channels therein and articles made thereby 失效
    制造具有通道的陶瓷制品的方法和由此制成的制品

    公开(公告)号:US4847025A

    公开(公告)日:1989-07-11

    申请号:US907924

    申请日:1986-09-16

    摘要: A method is provided for producing a self-supporting ceramic body comprising a polycrystalline material comprised of the oxidation reaction product of a parent metal and having therein one or more channels which inversely replicate the geometry of a configured fugitive metal. The method includes providing an assembly of the configured fugitive metal and the parent metal, optionally including a bed of permeable filler, and heating the assembly to form a body of molten parent metal. The molten parent metal is oxidized under selected conditions to grow the polycrystalline material to engulf the configured fugitive metal (and to infiltrate the filler, if the filler is present) and to cause the fugitive metal to disperse into the engulfing polycrystalline material thereby leaving behind as the one or more channels the space formerly occupied by the configured fugitive metal. The method provides self-supporting ceramic bodies having therein one or more channels inversely replicating the shape of the configured fugitive metal.

    摘要翻译: 提供了一种用于生产自支撑陶瓷体的方法,其包括由母体金属的氧化反应产物组成的多晶材料,并且在其中具有一个或多个通道,其反复地构成配置的逃逸金属的几何形状。 该方法包括提供配置的短暂金属和母体金属的组件,任选地包括可渗透填料床,以及加热组件以形成熔融母体金属体。 熔融母体金属在选择的条件下被氧化以生长多晶材料以吞没配置的短暂金属(并且如果存在填料,则渗透填料)并且使短暂金属分散到吞没的多晶材料中,从而留下如 一个或多个通道,空间以前由配置的逃逸金属占据。 该方法提供了在其中具有一个或多个通道的自支撑陶瓷体,反向复制了配置的短效金属的形状。

    Macrocomposite bodies
    10.
    发明授权
    Macrocomposite bodies 失效
    大复合体

    公开(公告)号:US5618635A

    公开(公告)日:1997-04-08

    申请号:US411055

    申请日:1995-03-27

    摘要: The present invention relates to the formation of a macrocomposite body by spontaneously infiltrating a permeable mass of filler material or a preform with molten matrix metal and bonding the spontaneously infiltrated material to at least one second material such as a ceramic or ceramic containing body and/or a metal or metal containing body. Particularly, an infiltration enhancer and/or infiltration enhancer precursor and/or infiltrating atmosphere are in communication with a filler material or a preform, at least at some point during the process, which permits molten matrix metal to spontaneously infiltrate the filler material or preform. Moreover, prior to infiltration, the filler material or preform is placed into contact with at least a portion of a second material such that after infiltation of the filler material or preform, the infiltrated material is bonded to the second material, thereby forming a macrocomposite body.

    摘要翻译: 本发明涉及通过自发渗透填充材料的可渗透物质或具有熔融基质金属的预成型体并将自发渗透的材料结合到至少一种第二材料如陶瓷或含陶瓷的体和/或 含金属或金属的物体。 特别地,渗透增强剂和/或渗透增强剂前体和/或渗透气氛至少在该过程中的某一点处与填料或预型体连通,这允许熔融基质金属自发地渗入填料或预型体。 此外,在渗透之前,将填料或预型体放置成与第二材料的至少一部分接触,使得在渗入填料或预型体之后,渗透的材料结合到第二材料,由此形成大复合体 。