PZT/Polymer composites and their fabrication
    1.
    发明授权
    PZT/Polymer composites and their fabrication 失效
    PZT /聚合物复合材料及其制备

    公开(公告)号:US4330593A

    公开(公告)日:1982-05-18

    申请号:US206732

    申请日:1980-11-13

    摘要: PZT/polymer composites and a simplified method of their fabrication are dribed. Commercially available PZT Pb(Zr, Ti)O.sub.3 powder is thoroughly mixed with a binder such as polyvinylalcohol and polymethyl methacrylate (PMM) spheres and pressed into pellets. The binder and PMM spheres are burnt out by heating pellets slowly and the porous pellets so obtained are sintered by heating them in closed high-purity alumina crucibles and lead zirconate as a source of lead is added thereto. The highly porous pellets thus obtained are impregnated with a suitable polymer such as silicone rubber elastomer or vinylcyclohexene dioxide epoxy.

    摘要翻译: 描述了PZT /聚合物复合材料及其制造的简化方法。 将市售的PZT Pb(Zr,Ti)O 3粉末与粘合剂如聚乙烯醇和聚甲基丙烯酸甲酯(PMM)球充分混合并压制成颗粒。 粘合剂和PMM球体通过缓慢加热颗粒而被烧制,并且将如此得到的多孔颗粒通过在封闭的高纯度氧化铝坩埚中加热而烧结,并将铅锆酸铅作为铅源加入其中。 由此获得的高度多孔的颗粒用合适的聚合物如硅橡胶弹性体或乙烯基环己烷二氧化物环氧树脂浸渍。

    Process for preparing a thallium-containing superconductor
    4.
    发明授权
    Process for preparing a thallium-containing superconductor 失效
    制备含铊超导体的方法

    公开(公告)号:US5385882A

    公开(公告)日:1995-01-31

    申请号:US966019

    申请日:1992-12-09

    IPC分类号: C01G3/00 H01B12/00 H01L39/12

    摘要: There is disclosed a process for preparing a thallium-containing superconductive composition. In the first step of the process, a mixture of an inorganic salt (such as potassium chloride) and a powder compositon is provided; the powder composition contains at least three separate compounds which, in combination, correspond to the stoichiometry of the super-conductor to be produced. This mixture is then charged to a closed container, raised to a temperature of from 800-959 degrees Centigrade, and heated for from about 1 to about 12 hours; thereafter, it is cooled to a temperature of 600 degrees Centigrade at a rate of at least 300 degrees Celsius per hour.

    摘要翻译: 公开了一种制备含铊的超导组合物的方法。 在该方法的第一步中,提供无机盐(如氯化钾)和粉末组合物的混合物; 粉末组合物含有至少三种分开的化合物,其组合对应于待生产的超导体的化学计量。 然后将该混合物装入密封容器中,升温至800-959摄氏度的温度,并加热约1至约12小时; 然后以至少300摄氏度/小时的速度将其冷却至600摄氏度的温度。