Composite of bonded cubic boron nitride crystals on a silicon carbide
substrate
    13.
    发明授权
    Composite of bonded cubic boron nitride crystals on a silicon carbide substrate 失效
    在碳化硅衬底上复合结合的立方氮化硼晶体

    公开(公告)号:US4110084A

    公开(公告)日:1978-08-29

    申请号:US787858

    申请日:1977-04-15

    摘要: A mass of cubic boron nitride(CBN) crystals, aluminum or aluminum alloy and a silicon carbide ceramic substrate are disposed in a container which is placed within a pressure-transmitting powder medium. Pressure ranging from about 20,000 psi to about 200,000 psi is applied to the powder medium resulting in substantially isostatic pressure being applied to the container and its contents. To the resulting shaped substantially-isostatic system of powder-enveloped container, heat and pressure are applied simultaneously whereby the aluminum or aluminum alloy is liquefied and infiltrated through the interstices between the CBN crystals and diffused into the contacting face of the silicon carbide substrate sufficiently to produce, upon cooling, an adherently bonded integral composite.

    摘要翻译: 立方氮化硼(CBN)晶体,铝或铝合金和碳化硅陶瓷衬底的质量被放置在放置在压力传递粉末介质内的容器中。 对粉末介质施加约20,000psi至约200,000psi的压力,导致将基本上等压的压力施加到容器及其内容物上。 对于所形成的粉末包裹容器的基本均匀的系统,同时施加热和压力,由此铝或铝合金液化并渗透通过CBN晶体之间的间隙并且充分扩散到碳化硅衬底的接触面中,足以 在冷却时产生粘附的整体复合材料。

    Ceramic Al.sub.2 O.sub.3 substoichiometric TiC body
    14.
    发明授权
    Ceramic Al.sub.2 O.sub.3 substoichiometric TiC body 失效
    陶瓷Al2O3亚化学计量TiC体

    公开(公告)号:US4407968A

    公开(公告)日:1983-10-04

    申请号:US412336

    申请日:1982-08-27

    CPC分类号: C04B35/117 C04B35/111

    摘要: A particulate dispersion of Al.sub.2 O.sub.3, elemental non-diamond carbon and a titanium member selected from the group consisting of elemental titanium, TiH.sub.2 and mixtures thereof is formed into a compact and sintered producing a ceramic composite having a minimum Rockwell A hardness of about 92 and being comprised of an Al.sub.2 O.sub.3 phase and a substoichiometric titanium carbide phase.

    摘要翻译: 将Al 2 O 3,元素非金刚石碳和选自元素钛,TiH 2及其混合物的钛成分的颗粒分散体形成为紧凑且烧结的,生产具有约92的最小洛氏硬度A的陶瓷复合材料,并且 由Al2O3相和亚化学计量碳化钛相组成。