BORON CARBIDE COMPOSITE BODIES, AND METHODS FOR MAKING SAME
    34.
    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

    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。

    AGGLOMERATED BORON CARBIDE AND METHOD FOR PRODUCING SAME
    37.
    发明申请
    AGGLOMERATED BORON CARBIDE AND METHOD FOR PRODUCING SAME 审中-公开
    聚碳酸酯及其制造方法

    公开(公告)号:WO01071727A2

    公开(公告)日:2001-09-27

    申请号:PCT/US2001/007106

    申请日:2001-03-06

    CPC classification number: C04B35/563 C04B35/645

    Abstract: The present invention relates to a method for producing agglomerated boron carbide. One form of the present invention includes the steps of providing a boron carbide powder precursor having particle sizes smaller than about 1 micron in diameter, mixing the boron carbide powder precursor with binder solution to form a slurry, drying the slurry to yield a solid residue, crushing the solid residue to yield green boron carbide particles, and firing the green boron carbide particles. The resultant agglomerated boron carbide particles have diameters generally ranging from about 5 to about 30 microns. The agglomerated boron carbide particles are characterized as boron carbide grains of about 1-2 microns in diameter suspended in a vitreous boron oxide matrix.

    Abstract translation: 本发明涉及一种生产附聚碳化硼的方法。 本发明的一种形式包括提供具有直径小于约1微米的粒度的碳化硼粉末前体的步骤,将碳化硼粉末前体与粘合剂溶液混合以形成浆料,干燥该浆料以产生固体残余物, 粉碎固体残余物以生成绿色碳化硼颗粒,并焙烧绿色碳化硼颗粒。 所得到的聚集碳化硼颗粒的直径通常为约5至约30微米。 聚集的碳化硼颗粒的特征在于悬浮在玻璃态氧化硼基体中的直径为约1-2微米的碳化硼颗粒。

    BORON CARBIDE CAST BODIES
    38.
    发明申请
    BORON CARBIDE CAST BODIES 审中-公开
    BORON碳化钨铸件

    公开(公告)号:WO00068165A1

    公开(公告)日:2000-11-16

    申请号:PCT/GB2000/001724

    申请日:2000-05-05

    Abstract: A method for casting high definition bodies from boron carbide suitable for sintering including the steps of mixing boron carbide particles with an aquaeous binder system to form a homogenised mixture forming the mixture into the required shape and drying the mixture. The cast bodies when sintered may amongst other applications be used for high impact resistance such as body armour and in wear and corrosion resistance.

    Abstract translation: 一种用于从适用于烧结的碳化硼铸造高清晰度体的方法,包括将碳化硼颗粒与水性粘合剂体系混合以形成混合物形成所需形状并干燥混合物的均质混合物的步骤。 烧结时的铸造体可以用于高耐冲击性,例如耐磨损和耐腐蚀性。

    SHAPED CERAMIC-METAL COMPOSITES
    40.
    发明申请
    SHAPED CERAMIC-METAL COMPOSITES 审中-公开
    形状的陶瓷 - 金属复合材料

    公开(公告)号:WO1995025078A1

    公开(公告)日:1995-09-21

    申请号:PCT/US1995002955

    申请日:1995-03-08

    Abstract: A method to at least partially impregnate a porous ceramic body with a metal comprising positioning a sacrificial porous ceramic transport means in physical contact with the metal and between the porous ceramic body to be impregnated and the metal; interposing a sufficient amount of a ceramic powder in contacting relationship between the ceramic body and the transport means to enable the metal to flow from the ceramic transport means to the ceramic body and insufficient to permit metal bonding between the transport means and the ceramic body, at least one constituent of the powder being wettable by, and chemically reactive with the metal; and maintaining at least the ceramic body and metal transport means at a temperature, and for a time, sufficient for at least a portion of the metal to flow through the transport means and into the ceramic body to impregnate the ceramic body a predetermined amount to form a metal impregnated ceramic body of near net shape.

    Abstract translation: 一种用金属至少部分地浸渍多孔陶瓷体的方法,包括将牺牲多孔陶瓷传送装置定位成与金属物理接触并且在要浸渍的多孔陶瓷体与金属之间; 在陶瓷体和输送装置之间插入足够量的陶瓷粉末的接触关系,以使金属能够从陶瓷输送装置流到陶瓷体,并且不足以允许输送装置和陶瓷体之间的金属粘合, 该粉末的至少一种成分可被金属润湿并化学反应; 并且至少将陶瓷体和金属输送装置保持在足以使至少一部分金属流过所述输送装置并进入陶瓷体的温度和时间,以将陶瓷体浸入预定量以形成 近净形金属浸渍陶瓷体。

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