Coking tar impregnated refractory products
    1.
    发明授权
    Coking tar impregnated refractory products 失效
    焦油沥青耐火制品

    公开(公告)号:US5011802A

    公开(公告)日:1991-04-30

    申请号:US468167

    申请日:1990-01-22

    IPC分类号: C04B35/01 C04B35/101

    CPC分类号: C04B35/101 C04B35/013

    摘要: A coking process in which tar impregnated refractory products are heated in a muffle within a furnace to a temperature sufficient to cause emission or release of the volatile constituents in the tars and pitches used for impregnation, whether by decomposition or distillation, for a time which is sufficient to remove substantially all of such constituents from the products, characterized by heating the refractory products in a muffle within the furnace while maintaining a positive pressure within the muffle during the emission of the volatile constituents, and thereafter cooling the refractories in a substantially nonoxidizing atmosphere. After the temperature of the refractory products is low enough to avoid any thermal shocking of the brick the brick are removed from the furnace and the muffle.

    摘要翻译: 将焦油浸渍的耐火产品在炉内的马弗管中加热到足以引起用于浸渍的焦油和沥青中的挥发性成分的排放或释放的温度的焦化方法,无论是通过分解还是蒸馏,时间是 足以从产品中基本上除去所有这些成分,其特征在于在排出挥发性成分的同时在炉内加热马弗炉中的马弗炉中的耐火产品,同时保持马弗炉内的正压,然后在基本上非氧化气氛中冷却耐火材料 。 在耐火产品的温度足够低以避免砖的任何热冲击之后,将砖从炉和马弗炉中取出。

    Bulk, polycrystalline switching materials for threshold and/or memory
switching
    2.
    发明授权
    Bulk, polycrystalline switching materials for threshold and/or memory switching 失效
    用于阈值和/或存储器切换的批量,多晶开关材料

    公开(公告)号:US4472296A

    公开(公告)日:1984-09-18

    申请号:US390355

    申请日:1982-06-21

    IPC分类号: H01L45/00 H01B1/06

    摘要: A new group of bulk polycrystalline materials which are capable of exhibiting, selectively, either memory switching or threshold switching. The body of the material, which can be molded into a suitable ceramic resistor configuration with ohmic electrodes and a sintered body composition, comprises as a majority proportion zinc oxide with the balance being another polycrystalline inorganic oxide such as bismuth oxide, cobalt oxide, chromium oxide, antimony oxide, praseodymium oxide, lanthanum oxide, holmium oxide and manganese oxide, or mixtures thereof.

    摘要翻译: 一组新的能够显示存储器切换或阈值切换的大块多晶材料。 可以模制成具有欧姆电极和烧结体组成的合适的陶瓷电阻器构造的材料体包含多数比例的氧化锌,余量为另一种多晶无机氧化物,例如氧化铋,氧化钴,氧化铬 ,氧化锑,氧化镨,氧化镧,氧化钬和氧化锰,或其混合物。

    Process for preparing active oxide powders
    3.
    发明授权
    Process for preparing active oxide powders 失效
    制备活性氧化物粉末的方法

    公开(公告)号:US4140771A

    公开(公告)日:1979-02-20

    申请号:US880921

    申请日:1978-02-24

    摘要: An improved process for preparing active oxide powders in which cation hydroxide gels, prepared in the conventional manner are chemically dried by alternately washing the gels with a liquid organic compound having polar characteristics and a liquid organic compound having nonpolar characteristics until the mechanical water is removed from the gel. The water-free cation hydroxide is then contacted with a final liquid organic wash to remove the previous organic wash and speed drying. The dried hydroxide treated in the conventional manner will form a highly sinterable active oxide powder.

    摘要翻译: 制备活性氧化物粉末的改进方法,其中以常规方式制备的阳离子氢氧化物凝胶通过用具有极性特征的液体有机化合物交替洗涤凝胶而化学干燥,并且具有非极性特性的液体有机化合物直到机械水从 凝胶。 然后将无水阳离子氢氧化物与最终的液体有机洗涤液接触以除去先前的有机洗涤和速度干燥。 以常规方式处理的干燥氢氧化物将形成高度可烧结的活性氧化物粉末。