Composite of bonded cubic boron nitride crystals on a silicon carbide
substrate
    8.
    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。