Methods for fabricating shapes by use of organometallic, ceramic
precursor binders
    12.
    发明授权
    Methods for fabricating shapes by use of organometallic, ceramic precursor binders 失效
    通过使用有机金属,陶瓷前体粘合剂制造形状的方法

    公开(公告)号:US5433261A

    公开(公告)日:1995-07-18

    申请号:US121814

    申请日:1993-09-15

    IPC分类号: B22C1/10 B22C1/20 B22D19/14

    CPC分类号: B22C1/205

    摘要: Organometallic ceramic precursor binders are used to fabricate shaped bodies by different techniques. Exemplary shape making techniques which utilize hardenable, liquid, organometallic, ceramic precursor binders include the fabrication of negatives of parts to be made (e.g., sand molds and sand cores for metalcasting, etc.), as well as utilizing ceramic precursor binders to make shapes directly (e.g., brake shoes, brake pads, clutch parts, grinding wheels, polymer concrete, refractory patches and liners, etc.). A preferred embodiment of the invention involves the fabrication of preforms used in the formation of composite articles.

    摘要翻译: 有机金属陶瓷前体粘合剂用于通过不同的技术制造成形体。 使用可硬化,液体,有机金属,陶瓷前体粘合剂的示例性形状制造技术包括制造要制备的部件的负片(例如,用于金属铸造的砂模和砂芯等),以及利用陶瓷前体粘合剂来形成形状 直接(例如制动蹄,刹车片,离合器部件,砂轮,聚合物混凝土,耐火贴片和衬垫等)。 本发明的优选实施例涉及制造用于形成复合制品的预成型件。

    Boron carbide composite bodies, and methods for making same
    15.
    发明授权
    Boron carbide composite bodies, and methods for making same 有权
    碳化硼复合体及其制造方法

    公开(公告)号:US06862970B2

    公开(公告)日:2005-03-08

    申请号:US09990175

    申请日:2001-11-20

    摘要: A composite body produced by a reactive infiltration process that possesses high mechanical strength, high hardness and high stiffness has applications in such diverse industries as precision equipment and ballistic armor. Specifically, 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 carbonaceous component. Potential deleterious reaction of the boron carbide with silicon during infiltration is suppressed by alloying or dissolving boron 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 largest particles making up the mass. The instant reaction-bonded silicon carbide (RBSC) composite bodies surpass previous RBSC's as armor materials, and in this capacity approach the ballistic performance of current carbide armor ceramics but with potentially lower cost manufacturing methods, e.g., infiltration techniques.

    摘要翻译: 通过具有高机械强度,高硬度和高刚度的反应性渗透方法生产的复合体可用于精密设备和防弹装甲等多种行业。 具体地,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浸润剂的反应性浸渗与具有碳质组分的多孔质量产生的碳化硅基体。 渗碳过程中碳化硼与硅的潜在有害反应可以通过在硅渗透剂与碳化硼接触之前将硼合金化或溶解到硅中来抑制。 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 弥补质量的最大颗粒。 即时反应粘结碳化硅(RBSC)复合体超过以前的RBSC作为铠装材料,并且在这种能力下接近目前的硬质合金装甲陶瓷的弹道性能,但具有潜在的较低成本的制造方法,例如渗透技术。

    Composite materials and methods for making same
    17.
    发明授权
    Composite materials and methods for making same 失效
    复合材料及其制作方法

    公开(公告)号:US08128861B1

    公开(公告)日:2012-03-06

    申请号:US12150597

    申请日:2008-04-28

    IPC分类号: B28B1/00

    摘要: Current top performing SAPI systems are B4C-containing (hot pressed B4C or reaction bonded B4C). These systems will not function well versus future WC/Co threats due to the inability of B4C to withstand high pressure impacts. New approaches will be needed for next generation SAPI ceramics. Three related concepts are disclosed herein, each of which will lead to improved reaction bonded ceramics for next generation SAPI applications. The first concept aims to reactively heat treat reaction bonded B4C, causing. SiC and SiB6 to form at the expense of B4C. The second approach will add Ti to the system, thus allowing TiC and TiB2 to form at the expense of B4C. Finally, the third concept will evaluate the use of finer particle sizes, thus improving the static properties of the ceramics (with the aim of enhancing multi-hit performance). In all cases, preliminary work has been conducted to demonstrate the viability of the concepts. This will lead to a new family of advanced armor ceramics. These new armor ceramics will allow the modern soldier to be better protected versus next generation, high level threats (e.g., high pressure WC/Co projectiles) with a more ergonomic package (lower weight, less bulk). Further, the results disclosed herein will yield improvement versus the current tool steel threats.

    摘要翻译: 目前高性能SAPI系统是含B4C(热压B4C或反应键合B4C)。 由于B4C不能承受高压冲击,这些系统对于未来的WC / Co威胁将不能很好地运行。 下一代SAPI陶瓷将需要新的方法。 本文公开了三个相关概念,每个概念将导致用于下一代SAPI应用的改进的反应结合陶瓷。 第一个概念旨在反应性地热处理反应结合的B4C,导致。 SiC和SiB6以B4C为代价形成。 第二种方法将Ti添加到系统中,从而使TiC和TiB2以B4C为代价形成。 最后,第三个概念将评估使用更细的粒径,从而改善陶瓷的静电特性(目的是提高多重击打性能)。 在所有情况下,已经进行了初步的工作来证明概念的可行性。 这将导致一个新的先进装甲陶瓷家族。 这些新的装甲陶瓷将使现代士兵得到更好的保护,与下一代高水准的威胁(例如,高压WC / Co射弹)相比,具有更符合人体工程学的包装(重量轻,体积较小)。 此外,本文公开的结果将相对于当前的工具钢威胁产生改进。