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    A PROCESS FOR THE MANUFACTURING OF DENSE SILICON CARBIDE
    24.
    发明申请
    A PROCESS FOR THE MANUFACTURING OF DENSE SILICON CARBIDE 审中-公开
    用于制造渗碳碳化物的方法

    公开(公告)号：WO2006004999A1

    公开(公告)日：2006-01-12

    申请号：PCT/US2005/023490

    申请日：2005-06-30

    Applicant: POCO GRAPHITE, INC. ,  RASHED, Abuagela, H. ,  SHEPPARD, Rex, G. ,  BRAY, Donald, J.

    Inventor： RASHED, Abuagela, H. ,  SHEPPARD, Rex, G. ,  BRAY, Donald, J.

    IPC: C04B35/565

    CPC classification number: C04B35/573 ,  C04B38/0022 ,  C04B38/0032 ,  C04B2111/00905 ,  C04B2111/2084 ,  C04B2235/48 ,  C04B2235/483 ,  C04B2235/614 ,  C04B2235/616 ,  C04B2235/72 ,  C04B2235/77 ,  C04B2235/95 ,  C04B2235/96 ,  C04B2235/9607 ,  C04B35/565 ,  C04B41/5059 ,  C04B35/52 ,  C04B38/0058

    Abstract: A method of producing a densified SiC article is provided. Near-net shape porous silicon carbide articles are produced and densified using the developed method. A substantial number of pores within the porous near-net shape silicon carbide article are filled (impregnated) with a carbon precursor, a silicon carbide precursor, or a mixture of both. The carbon precursor can be liquid or gas. The filled SiC preform is heated to convert the carbon or silicon carbide precursor to porous carbon or SiC preform inside the pores of the net-shape silicon carbide article. The impregnation/pyrolysis cycle is repeated until the desired amount of carbon and/or silicon carbide is achieved. In case of a carbon or a mixture of silicon carbide/carbon precursor is used, the pyrolyzed near-net shape silicon carbide article is then contacted with silicon in an inert atmosphere. The silicon diffuses through the pyrolyzed near-net shape silicon carbide article and reacts with the carbon contained within the pores of the porous SiC preform producing a new phase of silicon carbide within the pores of the near-net shape silicon carbide article. The produced silicon carbide is a near-net dense silicon carbide article.

    Abstract translation: 提供一种生产致密化SiC制品的方法。 使用开发的方法制造和致密近净形状的多孔碳化硅制品。 多孔近网状碳化硅制品内的大量孔被碳前体，碳化硅前体或两者的混合物填充（浸渍）。 碳前体可以是液体或气体。 加热填充的SiC预制件以将碳或碳化硅前体转变成网状碳化硅制品的孔内的多孔碳或SiC预制件。 重复浸渍/热解循环，直到达到所需量的碳和/或碳化硅。 在使用碳或碳化硅/碳前体的混合物的情况下，然后将热解的近净形碳化硅制品在惰性气氛中与硅接触。 硅通过热解的近净形状的碳化硅制品扩散并与包含在多孔SiC预制件的孔内的碳发生反应，在近净状碳化硅制品的孔内产生新的碳化硅相。 生产的碳化硅是近净密度的碳化硅制品。

    BORON CARBIDE COMPOSITE BODIES, AND METHODS FOR MAKING SAME
    25.
    发明申请
    BORON CARBIDE COMPOSITE BODIES, AND METHODS FOR MAKING SAME 审中-公开
    硼碳复合体及其制造方法

    公开(公告)号：WO2005079207A2

    公开(公告)日：2005-09-01

    申请号：PCT/US2004039319

    申请日：2004-11-23

    Applicant: M CUBED TECHNOLOGIES INC ,  AGHAJANIAN MICHAEL K ,  MCCORMICK ALLYN L ,  MORGAN BRADLEY N ,  LISZKIEWICZ JR ANTHONY F ,  RAMBERG JEFFREY R ,  MCKENNA DAVID W

    Inventor： AGHAJANIAN MICHAEL K ,  MCCORMICK ALLYN L ,  MORGAN BRADLEY N ,  LISZKIEWICZ JR ANTHONY F ,  RAMBERG JEFFREY R ,  MCKENNA DAVID W

    IPC: B05D1/00 ,  C04B35/563 ,  C04B35/577 ,  F41H5/00 ,  F41H5/04

    CPC classification number: F41H5/0414 ,  C04B35/563 ,  C04B35/565 ,  C04B35/806 ,  C04B38/0032 ,  C04B41/009 ,  C04B41/5096 ,  C04B41/85 ,  C04B2111/00931 ,  C04B2111/2046 ,  C04B2235/3821 ,  C04B2235/3826 ,  C04B2235/428 ,  C04B2235/5248 ,  C04B2235/5436 ,  C04B2235/616 ,  C04B38/0051 ,  C04B41/4523

    Abstract: A boron carbide composite body produced by an infiltration process that possesses high mechanical strength, high hardness and high stiffness has applications in such diverse industries as precision equipment and ballistic armor. In one embodiment, the composite material features a boron carbide filler or reinforcement phase, and a silicon carbide matrix produced by the reactive infiltration of an infiltrant having a silicon component with a porous mass having a reactable carbonaceous component. In an alternate embodiment, the infiltration can be caused to occur in the absence of the reactable carbonaceous component, e.g., to produce "siliconized boron carbide". Potential deleterious reaction of the boron carbide with silicon during infiltration is suppressed by alloying or dissolving a source of boron, or a source of carbon, or preferably both boron and carbon into the silicon prior to contact of the silicon infiltrant with the boron carbide. In a preferred embodiment of the invention related specifically to armor, good ballistic performance can be advanced by loading the porous mass or preform to be infiltrated to a high degree with one or more hard fillers such as boron carbide, and by limiting the size of the morphological features, particularly the ceramic phases, making up the composite body. The instant reaction-bonded boron carbide (RBBC) composite bodies are at least comparable in ballistic performance to current boron carbide armor ceramics but feature lower cost and higher volume manufacturing methods, e.g., infiltration techniques.

    Abstract translation: 通过具有高机械强度，高硬度和高刚度的渗透方法生产的碳化硼复合体在精密设备和防弹装备等多个行业中都有应用。 在一个实施方案中，复合材料具有碳化硼填料或增强相，并且通过具有硅组分的渗透剂的反应性浸渗与具有可反应的碳质组分的多孔质量产生的碳化硅基体。 在替代实施方案中，可以在不存在可反应的碳质组分的情况下引起渗透，例如产生“硅化碳化硼”。 渗碳过程中碳化硼与硅的潜在的有害反应可以通过在硅渗透剂与碳化硼接触之前合金化或溶解硼源或碳源，或优选硼和碳两者而进入硅中来抑制。 在本发明的一个优选实施方案中，具体涉及铠装，通过将一种或多种硬质填料例如碳化硼加载到高度渗透的多孔质量体或预型体，可以提高良好的弹道性能，并且通过限制 形态特征，特别是陶瓷相，组成复合体。 即时反应结合的碳化硼（RBBC）复合体在弹道性能方面至少与目前的碳化硼铠装陶瓷相当，但具有较低成本和较高体积的制造方法，例如渗透技术。

    METHOD FOR PRODUCING MULTI-LAYERED CERAMIC FILTER AND CERAMIC FILTER USING THE SAME
    26.
    发明申请
    METHOD FOR PRODUCING MULTI-LAYERED CERAMIC FILTER AND CERAMIC FILTER USING THE SAME 审中-公开
    使用多层陶瓷过滤器和陶瓷过滤器的方法

    公开(公告)号：WO2004050214A1

    公开(公告)日：2004-06-17

    申请号：PCT/KR2003/002642

    申请日：2003-12-04

    Applicant: CLEAN AIR TECHNOLOGY CORP. ,  KIM, Ki-Ho ,  PARK, Hyeong-Jung

    Inventor： KIM, Ki-Ho ,  PARK, Hyeong-Jung

    IPC: B01D39/00

    CPC classification number: B01D39/2093 ,  C04B33/04 ,  C04B35/10 ,  C04B35/14 ,  C04B35/18 ,  C04B35/46 ,  C04B35/565 ,  C04B38/0032 ,  C04B38/0615 ,  C04B2111/00612 ,  C04B2111/00793 ,  C04B38/0074 ,  C04B38/0605 ,  C04B38/0675 ,  C04B38/068

    Abstract: The present invention relates to a process for preparing a multi-layered ceramic filter comprising the steps of preparing a slurry by mixing ceramic powder selected from the group consisting of silicon carbide, alumina, silimanite, kaolin, silica, titania and siliceous earth, clay, supplementing agent, a binder and a dispersion; supporting the slurry on a support to mold; drying and sintering the molded product; wherein after drying and before sintering, or after sintering, a slurry comprising ceramic powder, supplementing agent, a binder and a dispersion is further coated inside or outside of the molded product, and a ceramic filer prepared by the process. According to the present invention, production cost decreases, preparation is easy, shape can be easily modified and large sized filer can be easily prepared, abrasion resistance and heat resistance of ceramic filer can be remarkably improved, porosity control range can be improved, light-weighted construction with the same heat resistance and abrasion resistance is possible due to cross sections of different shapes, and blocking can be minimized.

    Abstract translation: 本发明涉及一种制备多层陶瓷过滤器的方法，包括以下步骤：通过混合选自碳化硅，氧化铝，硅锰矿，高岭土，二氧化硅，二氧化钛和硅质土的陶瓷粉末，粘土， 补充剂，粘合剂和分散体; 将浆料支撑在模具上; 干燥和烧结成型产品; 其中在干燥之后和烧结之前或烧结后，将包含陶瓷粉末，补充剂，粘合剂和分散体的浆料进一步涂覆在模制产品的内部或外部，以及通过该方法制备的陶瓷过滤器。 根据本发明，制造成本降低，制备容易，可以容易地改性形状，容易制备大尺寸的过滤器，可以显着提高陶瓷过滤器的耐磨性和耐热性，提高孔隙率控制范围， 由于不同形状的横截面，具有相同的耐热性和耐磨性的加权结构是可能的，并且可以最小化阻塞。

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