Method of controlling infiltration of complex-shaped ceramic-metal
composite articles and the products produced thereby
    281.
    发明授权
    Method of controlling infiltration of complex-shaped ceramic-metal composite articles and the products produced thereby 失效
    控制复合陶瓷 - 金属复合制品渗透的方法及由此产生的产品

    公开(公告)号:US5900277A

    公开(公告)日:1999-05-04

    申请号:US762467

    申请日:1996-12-09

    Abstract: 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(s) of the non-wettable powder on one or more surface(s) of the shaped ceramic body wherein the shaped ceramic body has a region(s) where there is no layer of the non-wettable powder;b) infiltrating the shaped ceramic body with the metal through the region(s) 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 the 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(s) where there is no layer of the non-wettable powder.A complex-shaped ceramic-metal composite article with undesirable regions of excess metal and undesirable phases on the surface(s) of or within the article only where there is or was no layer of 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.

    Abstract translation: 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,形成一层 成形陶瓷体的一个或多个表面上的不可湿性粉末,其中成形陶瓷体具有不存在不可湿性粉末层的区域; b)通过不具有不可湿性粉末层的区域将金属渗入成形陶瓷体,使得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 - 金属复合材料为 形成,其中制品具有基本上成形陶瓷体的净形状,并且表面上的不需要的过量金属的区域和复合形陶瓷 - 金属复合制品附近的不期望的相位仅位于该区域中, 那里没有一层不可湿润的粉末。 一种复合形状的陶瓷 - 金属复合制品,其中仅在没有或不存在不可湿性粉末层的情况下,在制品的表面或物品的表面上具有不需要的过量金属和不期望的相的区域。 本发明的方法允许制备复合形状的陶瓷 - 金属复合制品,其中在不存在或不存在非层的区域内,在制品表面或制品内表面具有不需要的过量金属和不期望的相的区域, 可润滑的粉末。 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。

    Method for producing metal matrix composites using electromagnetic body
forces
    283.
    发明授权
    Method for producing metal matrix composites using electromagnetic body forces 失效
    使用电磁体力制备金属基复合材料的方法

    公开(公告)号:US5755272A

    公开(公告)日:1998-05-26

    申请号:US658427

    申请日:1996-03-27

    CPC classification number: C22C1/1036 B22D19/14 B22D27/02

    Abstract: Method for producing metal matrix composites. The method includes the steps of placing a substantially liquid metal in the vicinity of a reinforcement material and in the vicinity of the source of a transient magnetic field sufficient to produce an electromagnetic body force within the metal. The magnetic field is activated thereby propelling the substantially liquid metal into the reinforcement material thereby producing metal matrix composites.

    Abstract translation: 金属基复合材料的制备方法。 该方法包括以下步骤:将基本上液态的金属放置在增强材料附近和在足以在金属内产生电磁体力的瞬态磁场的源附近。 激活磁场,从而将基本上液态的金属推进加强材料,从而产生金属基质复合材料。

    Earthworking machine ground engaging tools having cast-in-place abrasion
and impact resistant metal matrix composite components
    284.
    发明授权
    Earthworking machine ground engaging tools having cast-in-place abrasion and impact resistant metal matrix composite components 失效
    土工机地面接合工具具有现浇磨损和抗冲击金属基复合材料

    公开(公告)号:US5743033A

    公开(公告)日:1998-04-28

    申请号:US608804

    申请日:1996-02-29

    Inventor: Gerald A. Gegel

    Abstract: A ground engaging tool for an earthworking machine comprises a ground engaging element with a cast-in-place metal matrix composite component. The ground engaging element comprises a metal base component and a metal matrix composite component. The metal matrix component is bonded to the metal base component. The metal matrix composite component consists of a preform having interconnecting porosity. The preform is formed from a material selected from one of ceramic, cermet, or mixtures thereof. The metal matrix composite component also consists of an infiltration metal. The preform is infiltrated by the infiltration metal and the infiltration metal is fusion bonded to the metal base component.

    Abstract translation: 用于土方机械的地面接合工具包括具有现浇金属基复合部件的地面接合元件。 地面接合元件包括金属基底部件和金属基体复合部件。 金属基体成分与金属基体成分接合。 金属基复合材料组件由具有互连多孔性的预型件组成。 预制件由选自陶瓷,金属陶瓷或其混合物之一的材料形成。 金属基复合材料组成也由渗透金属组成。 预成型坯被渗透金属渗透,并且渗透金属与金属基底部件熔合。

    Macrocomposite bodies
    287.
    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

    Abstract: 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.

    Abstract translation: 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 。

    Gating means for metal matrix composite manufacture
    290.
    发明授权
    Gating means for metal matrix composite manufacture 失效
    金属基复合材料制造的门控方法

    公开(公告)号:US5553657A

    公开(公告)日:1996-09-10

    申请号:US261694

    申请日:1994-05-31

    Abstract: The present invention relates to the use of a gating means in combination with a spontaneous infiltration process to produce a metal matrix composite body. Particularly, a permeable mass of filler material or a preform is spontaneously infiltrated by molten matrix metal to form a metal matrix composite body. A gating means is provided which controls or limits the areal contact between molten matrix metal and the filler material or preform. The use of a gating means provides for control of the amount of matrix metal which can contact the preform or filler material, which may result in less machining of a formed metal matrix composite body compared with a similar metal matrix composite body made without a gating mean. Moreover, the use of a gating means ameliorates the tendency of a formed metal matrix composite body to warp due to the contact between the formed composite body and matrix metal carcass. In a preferred embodiment, the gating means may comprise a porous material or a precursor to a porous material, which may optionally function as a separation facilitator. Alternatively, the separation facilitator may be provided independent of the gating means.

    Abstract translation: 本发明涉及门控装置与自发渗透方法的组合以产生金属基质复合体的用途。 特别地,填充材料或预成型件的渗透性质量被熔融基质金属自发渗入以形成金属基质复合体。 提供了控制或限制熔融基体金属与填充材料或预制件之间的面接触的门控装置。 门控装置的使用提供了可以接触预成型件或填充材料的基体金属的量的控制,这可能导致形成的金属基质复合体的机械加工较少,而与不具有门控平均值的类似金属基体复合体相比较 。 此外,浇注装置的使用改善了形成的金属基复合材料体由于形成的复合体与基质金属体之间的接触而翘曲的趋势。 在优选实施例中,门控装置可以包括多孔材料或多孔材料的前体,其可以任选地用作分离促进剂。 或者,可以独立于门控装置提供分离促进器。

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