Process for preparing self-supporting bodies and products made thereby
    5.
    发明授权
    Process for preparing self-supporting bodies and products made thereby 失效
    制备自支撑体及其制品的方法

    公开(公告)号:US4940679A

    公开(公告)日:1990-07-10

    申请号:US137044

    申请日:1987-12-23

    摘要: Self-supporting bodies are produced by reactive infiltration of a parent metal into boron carbide typically resulting in a composite comprising a boron-containing compound and metal. The mass to be infiltrated may contain one or more inert fillers admixed with the boron carbide, or at least one carbon donor material, to produce a composite by reactive infiltration, which composite comprises a matrix of metal and boron-containing compound embedding the filler. In one embodiment of the invention, a parent metal is reactively infiltrated into a mass comprising a boron carbide material mixed with a carbon-containing compound. In this embodiment, a self-supporting composite is formed typically comprising a boron-containing compound, a carbon-containing compound, and metal. The relative amounts of reactants and process conditions may be altered or controlled to yield a body containing varying volume percents of ceramic, metal and/or porosity. The mass to be infiltrated can be contained within a refractory vessel having a venting means included therein.

    摘要翻译: 通过将母体金属反应性浸渗到碳化硼中而产生自支撑体,通常产生包含含硼化合物和金属的复合材料。 待渗透的物质可以含有一种或多种与碳化硼或至少一种碳供体材料混合的惰性填料,以通过反应性渗透产生复合材料,该复合材料包含嵌入填料的金属和含硼化合物的基质。 在本发明的一个实施方案中,母体金属被反应地渗透到包含与含碳化合物混合的碳化硼材料的组合物中。 在该实施方案中,通常包含含硼化合物,含碳化合物和金属的自支撑复合材料。 可以改变或控制反应物和工艺条件的相对量,以产生包含不同体积百分比的陶瓷,金属和/或孔隙的体。 待渗透的物质可以包含在其中包括排气装置的耐火容器中。

    Additives for property modification in ceramic composite bodies
    6.
    发明授权
    Additives for property modification in ceramic composite bodies 失效
    陶瓷复合材料的改性添加剂

    公开(公告)号:US5403790A

    公开(公告)日:1995-04-04

    申请号:US960407

    申请日:1993-01-11

    摘要: This invention relates generally to a novel method of manufacturing a composite body. More particularly, the present invention relates to a method for modifying the resultant properties of a composite body, by, for example, minimizing the amount of porosity present in the composite body. Moreover, additives, whether used alone or in combination, (1) can be admixed with the permeable mass, (2) can be mixed or alloyed with the parent metal, (3) can be placed at an interface between the parent metal and the preform or mass of filler material, (4) or any combination of the aforementioned methods, to modify properties of the resultant composite body. Particularly, additives such as VC, NbC, WC, W.sub.2 B.sub.5, TaC, ZrC, ZrB.sub.2, SiB.sub.6, SiC, MgO, Al.sub.2 O.sub.3, ZrO.sub.2, CeO.sub.2, Y.sub.2 O.sub.3, La.sub.2 O.sub.3, MgAl.sub.2 O.sub.4, HfO.sub.2, ZrSiO.sub.4, Yb.sub.2 O.sub.3 and Mo.sub.2 B.sub.5 can be combined with the permeable mass in an amount of about 5-50 percent by weight, prior to reactively infiltrating the permeable mass. Moreover, an additive may also include substantially pure elemental metals (e.g., Nb, Ti, Hf, V, Ta, Cr, Mo, Al, Cr, Si, Co and W) which may be provided by any of the methods discussed above herein.

    摘要翻译: PCT No.PCT / US91 / 04951 Sec。 371日期:1993年1月11日 102(e)日期1993年1月11日PCT PCT 1991年7月12日PCT公布。 公开号WO92 / 00933 日本1992年1月23日。本发明一般涉及一种制造复合体的新方法。 更具体地说,本发明涉及通过例如最小化复合体中存在的孔隙率来改变复合体的合成性能的方法。 此外,无论单独使用还是组合使用,添加剂(1)均可与可渗透物质混合,(2)可与母体金属混合或合金化,(3)可置于母体金属与母体金属之间的界面处 填充材料的预制件或质量,(4)或上述方法的任何组合,以改变所得复合材料的性能。 特别地,可以将诸如VC,NbC,WC,W2B5,TaC,ZrC,ZrB2,SiB6,SiC,MgO,Al2O3,ZrO2,CeO2,Y2O3,La2O3,MgAl2O4,HfO2,ZrSiO4,Yb2O3和Mo2B5的添加剂与渗透性 在反应性渗透可渗透物质之前,其质量为约5-50重量%。 此外,添加剂还可以包括可以通过上述任何方法提供的基本上纯的元素金属(例如,Nb,Ti,Hf,V,Ta,Cr,Mo,Al,Cr,Si,Co和W) 。

    Method of producing and modifying the properties of ceramic composite
bodies
    7.
    发明授权
    Method of producing and modifying the properties of ceramic composite bodies 失效
    制造和改性陶瓷复合材料性能的方法

    公开(公告)号:US5066622A

    公开(公告)日:1991-11-19

    申请号:US554100

    申请日:1990-07-13

    摘要: This invention relates generally to a novel method of manufacturing a composite body. More particularly, the present invention relates to a method for modifying the resultant properties of a composite body, by, for example, minimizing the amount of porosity present in the composite body. Additives such as TaC, ZrC, ZrB.sub.2, VC, NbC, WC, W.sub.2 B.sub.5 and/or MoO.sub.2 B.sub.5 can be combined with a boron carbide material which is thereafter reactively infiltrated by a parent metal. The composite body comprises one or more boron-containing compounds (e.g., a boride or a boride and a carbide) which is made by the reactive infiltration of molten parent metal into the boron carbide mass. Particular emphasis is placed upon modifying the properties of a ZrB.sub.2 -ZrC-Zr composite body. However, the methods disclosed in the application are believed to be generic to a number of parent metals and preform materials.

    摘要翻译: 本发明一般涉及复合体的新型制造方法。 更具体地说,本发明涉及通过例如最小化复合体中存在的孔隙率来改变复合体的合成性能的方法。 添加剂如TaC,ZrC,ZrB2,VC,NbC,WC,W2B5和/或MoO2B5可与碳化硼材料组合,然后碳化硼材料随后由母体金属反应渗透。 复合体包含一种或多种通过熔融母体金属反应性浸渗到碳化硼块中制成的含硼化合物(例如硼化物或硼化物和碳化物)。 特别强调改性ZrB2-ZrC-Zr复合体的性能。 然而,本申请中公开的方法被认为是对许多母体金属和预成型材料的通用。

    Self-supporting composite bodies
    8.
    发明授权
    Self-supporting composite bodies 失效
    自支撑复合体

    公开(公告)号:US5296419A

    公开(公告)日:1994-03-22

    申请号:US16629

    申请日:1993-02-12

    摘要: Self-supporting bodies are produced by reactive infiltration of a parent metal into a boron nitride material typically resulting in a body comprising a boron-containing compound, a nitrogen-containing compound and metal. The mass to be infiltrated may contain one or more inert fillers admixed with the boron nitride, to produce a composite by reactive infiltration, which composite comprises a matrix which embeds the filler material. The matrix, in a composite body containing filler material, comprises one or more of metal, a boron-containing compound and a nitrogen-containing compound. The relative amounts of reactants and process conditions may be altered or controlled to yield a body containing varying volume percents of ceramic, metal and/or porosity. The mass to be infiltrated can be contained within a refractory vessel having a venting means included therein.

    摘要翻译: 通过将母体金属反应性渗透到氮化硼材料中而产生自支撑体,通常产生包含含硼化合物,含氮化合物和金属的体。 待渗透的物质可以包含一种或多种与氮化硼混合的惰性填料,以通过反应性渗透产生复合材料,该复合材料包括嵌入填料的基质。 含有填料的复合体中的基体包含一种或多种金属,含硼化合物和含氮化合物。 可以改变或控制反应物和工艺条件的相对量,以产生包含不同体积百分比的陶瓷,金属和/或孔隙的体。 待渗透的物质可以包含在其中包括排气装置的耐火容器中。

    Process for preparing self-supporting bodies and products made thereby
    10.
    发明授权
    Process for preparing self-supporting bodies and products made thereby 失效
    制备自支撑体及其制品的方法

    公开(公告)号:US4978644A

    公开(公告)日:1990-12-18

    申请号:US449521

    申请日:1989-12-12

    IPC分类号: C04B35/58 C04B35/65

    摘要: Self-supporting bodies are produced by reactive infiltration of a parent metal into a boron nitride material typically resulting in a body comprising a boron-containing compound, a nitrogen-containing compound and metal. The mass to be infiltrated may contain one or more inert fillers admixed with the boron nitride, to produce a composite by reactive infiltration, which composite comprises a matrix which embeds the filler material. The matrix, in a composite body containing filler material, comprises one or more of metal, a boron-containing compound and a nitrogen-containing compound. The relative amounts of reactants and process conditions may by altered or controlled to yield a body containing varying volume percents of ceramic, metal and/or porosity. The mass to be infiltrated can be contained within a refractory vessel having a venting means included therein.

    摘要翻译: 通过将母体金属反应性渗透到氮化硼材料中而产生自支撑体,通常产生包含含硼化合物,含氮化合物和金属的体。 待渗透的物质可以包含一种或多种与氮化硼混合的惰性填料,以通过反应性渗透产生复合材料,该复合材料包括嵌入填料的基质。 含有填料的复合体中的基体包含一种或多种金属,含硼化合物和含氮化合物。 反应物和工艺条件的相对量可以通过改变或控制以产生包含不同体积百分比的陶瓷,金属和/或孔隙率的主体。 待渗透的物质可以包含在其中包括排气装置的耐火容器中。