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    Method of controlling infiltration of complex-shaped ceramic-metal composite articles and the products produced thereby
    1.
    发明授权
    Method of controlling infiltration of complex-shaped ceramic-metal composite articles and the products produced thereby 有权
    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：US06200526B1

    公开(公告)日：2001-03-13

    申请号：US09297968

    申请日：1999-05-11

    申请人： Richard T. Fox ,  Aleksander J. Pyzik ,  Chan Han ,  Robert T. Nilsson

    发明人： Richard T. Fox ,  Aleksander J. Pyzik ,  Chan Han ,  Robert T. Nilsson

    IPC分类号： B22F326

    CPC分类号： G11B5/7315 ,  C04B41/5155 ,  C04B41/52 ,  C04B41/88 ,  C04B41/89 ,  C22C1/1036 ,  C22C2001/1021 ,  C22C2001/1057 ,  G11B5/8404

    摘要： 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.

    摘要翻译： 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 没有不可湿粉末层的区域，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期望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。

    Method of controlling infiltration of complex-shaped ceramic-metal composite articles and the products produced thereby
    2.
    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

    申请人： Richard T. Fox ,  Chan Han ,  Aleksander J. Pyzik ,  Robert T. Nilsson

    发明人： Richard T. Fox ,  Chan Han ,  Aleksander J. Pyzik ,  Robert T. Nilsson

    IPC分类号： B22D19/00 ,  C04B41/51 ,  C04B41/52 ,  C04B41/88 ,  C04B41/89 ,  C22C1/10 ,  G11B5/73 ,  G11B5/84 ,  B05D1/06 ,  B05D1/32

    CPC分类号： G11B5/7315 ,  C04B41/5155 ,  C04B41/52 ,  C04B41/88 ,  C04B41/89 ,  C22C1/1036 ,  G11B5/8404 ,  C22C2001/1021 ,  C22C2001/1057

    摘要： 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.

    摘要翻译： 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。

    Boron carbide-copper cermets and method for making same
    5.
    发明授权
    Boron carbide-copper cermets and method for making same 失效
    碳化钨 - 铜金属陶瓷及其制造方法

    公开(公告)号：US5145504A

    公开(公告)日：1992-09-08

    申请号：US726448

    申请日：1991-07-08

    申请人： Aleksander J. Pyzik ,  Robert T. Nilsson

    发明人： Aleksander J. Pyzik ,  Robert T. Nilsson

    IPC分类号： C04B41/51 ,  C04B41/88 ,  C22C1/04 ,  C22C29/06

    CPC分类号： C04B41/009 ,  C04B41/5127 ,  C04B41/88 ,  C22C29/062 ,  C04B2111/00931

    摘要： Ceramic metal compositions are described that include a ceramic phase content of at least 60 percent by volume of said composition and a copper metal phase permeating the ceramic phase. The resulting composition is substantially fully densified, having a connected or isolated ceramic grain structure, preferably of fine B.sub.4 C grains of less than 3 micrometers. Flexure strength and fracture toughness for 80 volume percent B.sub.4 C-20 volume percent Cu cermets are 6.62 MPa.multidot.m1/2 and 725 MPa, respectively. The process of the invention includes as a key element, contacting a porous article of ceramic phase with copper metal followed by heating to above melting and subjecting said article to pressure of at least 200 MPa, such that the porous body is filled with metal and the composition is substantially fully densified.

    摘要翻译： 描述了陶瓷金属组合物，其包括至少60体积％的所述组合物的陶瓷相含量和渗透陶瓷相的铜金属相。 所得组合物基本上完全致密化，具有连接或分离的陶瓷晶粒结构，优选小于3微米的细小的B4C晶粒。 对于80体积百分比的B4C-20体积百分比的Cu金属陶瓷的挠曲强度和断裂韧性分别为6.62MPaxm1 / 2和725MPa。 本发明的方法包括作为关键元件，使陶瓷相的多孔制品与铜金属接触，然后加热至高于熔化，并使所述制品经受至少200MPa的压力，使得多孔体填充金属，并且 组合物基本上完全致密化。

    B4C/Al cermets and method for making same
    6.
    发明授权
    B4C/Al cermets and method for making same 失效
    B4C / Al金属陶瓷及其制造方法

    公开(公告)号：US5039633A

    公开(公告)日：1991-08-13

    申请号：US407393

    申请日：1989-09-14

    申请人： Aleksander J. Pyzik ,  Robert T. Nilsson

    发明人： Aleksander J. Pyzik ,  Robert T. Nilsson

    IPC分类号： B22F3/26 ,  C04B35/65 ,  C04B41/50 ,  C04B41/51 ,  C04B41/87 ,  C04B41/88 ,  C22C1/10 ,  C22C29/00 ,  C22C29/02 ,  C22C29/06

    CPC分类号： C04B41/009 ,  C04B35/652 ,  C04B41/507 ,  C04B41/515 ,  C04B41/5155 ,  C04B41/87 ,  C04B41/88 ,  C22C1/1036 ,  C22C29/062

    摘要： Reactive ceramic-metal compositions are described that include a ceramic phase of at least 70 percent by volume, 95 percent of theoretical density and a metal phase that retains its chemical reactivity with the ceramic phase after the composition has been fully densified. The composition may be heat treated after densification to form additional ceramic phases in a controllable manner. Preferred ceramic metal compositions wherein the metal and ceramic components retain reactivity after densification include boron carbide ceramic and Al or Mg metals. The process employed in forming said compositions requires first forming a sintered porous body of the ceramic material followed by contacting with the metal component, which may be in chip or solid bar form. The system is then heated to the melting point of the metal and a pressure of at least 200 MPa is employed such that the porous body is filled with metal and the composition is substantially fully densified. Subsequent heating reacts the metal with the ceramic to form additional B-C-metal phases as desired.

    摘要翻译： 描述了活性陶瓷 - 金属组合物，其包括至少70体积％，理论密度的95％的陶瓷相和在组合物完全致密化后保持其与陶瓷相的化学反应性的金属相。 组合物可以在致密化之后进行热处理，以可控的方式形成额外的陶瓷相。 其中金属和陶瓷组分在致密化后保持反应性的优选陶瓷金属组合物包括碳化硼陶瓷和Al或Mg金属。 用于形成所述组合物的方法需要首先形成陶瓷材料的烧结多孔体，然后与金属组分接触，金属组分可以是片状或固体棒形式。 然后将该系统加热到金属的熔点，并且使用至少200MPa的压力，使得多孔体填充金属并且组合物基本上完全致密化。 随后加热使金属与陶瓷反应，形成额外的B-C金属相。

    Methods for making WC-containing bodies
    7.
    发明授权
    Methods for making WC-containing bodies 失效
    制作含WC体的方法

    公开(公告)号：US5612264A

    公开(公告)日：1997-03-18

    申请号：US555944

    申请日：1995-11-13

    申请人： Robert T. Nilsson ,  Richard T. Fox ,  Stephen D. Dunmead

    发明人： Robert T. Nilsson ,  Richard T. Fox ,  Stephen D. Dunmead

    IPC分类号： C04B35/56

    CPC分类号： C04B35/6455 ,  C04B35/5607 ,  C04B35/5611 ,  C04B35/5622 ,  C04B35/5626 ,  C04B35/58007 ,  C04B35/645

    摘要： A method of forming a low level carbon high-density tungsten carbide-containing material includes sintering a preform which contains tungsten carbide powder and has a composition such that the resulting sintered material has at most 6.05 weight percent tungsten-bound carbon based on the total weight of tungsten and tungsten-bound carbon. This low level of carbon may be achieved by, prior to the sintering step, oxidizing the tungsten carbide powder sufficiently to achieve the desired substoichiometric carbon level in the sintered product or by adding a carbon-lowering material selected from the group consisting of tungsten, ditungsten carbide, and tungsten oxide. Optionally, other materials can be present in the preform such as carbon-getter metals and compounds thereof. The carbon-getter metals are those metals of which the carbides thereof are more thermodynamically stable than monotungsten carbide.

    摘要翻译： 形成低碳碳高密度碳化钨的材料的方法包括烧结含有碳化钨粉末的预成型体，并且具有使得所得烧结材料基于总重量具有至多6.05重量％的钨结合碳的组成 的钨和钨结合的碳。 这种低水平的碳可以通过在烧结步骤之前充分氧化碳化钨粉末以达到烧结产品中所需的亚化学计量碳水平，或通过添加选自钨，二钨的碳的降低材料 碳化物和氧化钨。 任选地，其它材料可以存在于预成型体中，例如碳吸收剂金属及其化合物。 碳吸收剂金属是其碳化物比单碳化钨更具有热力学稳定性的金属。

    CATALYZED SOOT FILTER AND METHOD(S) TO MAKE THESE
    9.
    发明申请
    CATALYZED SOOT FILTER AND METHOD(S) TO MAKE THESE 有权
    催化过滤器及其制备方法

    公开(公告)号：US20090163356A1

    公开(公告)日：2009-06-25

    申请号：US12338232

    申请日：2008-12-18

    申请人： Robert T. Nilsson ,  Robin Ziebarth ,  Steven J. Martin

    发明人： Robert T. Nilsson ,  Robin Ziebarth ,  Steven J. Martin

    IPC分类号： B01J27/224

    CPC分类号： B01J23/04 ,  B01D53/944 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/20723 ,  B01D2255/2073 ,  B01D2255/20753 ,  B01D2255/20769 ,  B01D2255/20776 ,  B01D2258/012 ,  B01J27/22 ,  B01J27/224 ,  B01J37/084 ,  Y10S55/05 ,  Y10S55/10 ,  Y10S55/30

    摘要： An improved soot catalyst is comprised of an alkali compound at least partially coated by a ceramic coating comprised of C bonded to a metal, semimetallic element or combination thereof. The improved soot catalyst may be employed in catalyzed Diesel particulate filters. In one method to make a catalyzed Diesel particulate filter, the improved filter is made by contacting a porous ceramic body having an alkali catalyst thereon, coating the alkali catalyst with an organic ceramic precursor, heating the ceramic body to a temperature in an atmosphere sufficient to decompose the organic ceramic precursor to form the soot catalyst on the porous ceramic body without volatilizing substantial amount of the alkali catalyst away.

    摘要翻译： 改进的烟灰催化剂由至少部分地被陶瓷涂层涂覆的碱性化合物组成，所述陶瓷涂层包含C键合到金属，半金属元素或其组合。 改进的烟灰催化剂可用于催化柴油微粒过滤器。 在制备催化柴油颗粒过滤器的一种方法中，改进的过滤器通过使其上具有碱性催化剂的多孔陶瓷体与其上涂覆碱催化剂与有机陶瓷前体进行接触来制备，将陶瓷体加热到足够大的温度 分解有机陶瓷前体以在多孔陶瓷体上形成烟灰催化剂，而不会使相当大量的碱催化剂挥发掉。