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37 条记录 (耗时 0.023 秒)

    Method of forming fine dispersion of ceria in tungsten
    23.
    发明授权
    Method of forming fine dispersion of ceria in tungsten 失效
    在钨中形成二氧化铈精细分散体的方法

    公开(公告)号：US5284614A

    公开(公告)日：1994-02-08

    申请号：US891116

    申请日：1992-06-01

    申请人： Li-Chyong Chen ,  Stephen L. Dole ,  Ronald H. Arendt

    发明人： Li-Chyong Chen ,  Stephen L. Dole ,  Ronald H. Arendt

    IPC分类号： B22F1/00 ,  B22F9/22 ,  C22C1/10 ,  C22C32/00 ,  B22F9/24

    CPC分类号： C22C32/0031 ,  C22C1/1026

    摘要： Doped tungsten powder, or sintered tungsten bodies formed therefrom, having a fine dispersion of oxide particles of at least one metal from the group zirconium, hafnium, lanthanum, yttrium, and rare earth's are formed by the method of this invention. A mixture of a salt solution comprised of a soluble salt of the metal, and a tungsten blue oxide powder is formed. A hydroxide precipitating solution is admixed with the mixture to form a hydroxide precipitate of the metal on the tungsten blue oxide powder. The tungsten blue oxide powder and hydroxide precipitate are heated in a reducing atmosphere to form the tungsten powder having the dispersion of oxide particles. The doped tungsten powder can be consolidated and sintered to form tungsten bodies having a fine dispersion of the metal oxide.

    摘要翻译： 通过本发明的方法形成具有由锆，铪，镧，钇和稀土族组成的至少一种金属的氧化物颗粒的细分散体的由其形成的掺杂钨粉末或烧结钨体。 形成由金属的可溶性盐构成的盐溶液和蓝色氧化钨粉末的混合物。 将氢氧化物沉淀溶液与混合物混合以在钨蓝色氧化物粉末上形成金属的氢氧化物沉淀物。 将钨蓝色氧化物粉末和氢氧化物沉淀物在还原气氛中加热以形成具有氧化物颗粒分散体的钨粉末。 掺杂的钨粉可以被固结和烧结以形成具有金属氧化物的细分散体的钨体。

    Preparation of tape of silver covered Bi-Pb-Ca;Sr-Cu-O oriented polycrystal superconductor
    24.
    发明授权
    Preparation of tape of silver covered Bi-Pb-Ca;Sr-Cu-O oriented polycrystal superconductor 失效
    银覆盖的BI-PB-CA的胶带的制备; SR-CU-O的多晶超导体

    公开(公告)号：US5204316A

    公开(公告)日：1993-04-20

    申请号：US502712

    申请日：1990-04-02

    申请人： Ronald H. Arendt ,  Mary F. Garbauskas

    发明人： Ronald H. Arendt ,  Mary F. Garbauskas

    IPC分类号： B21F19/00 ,  C01G1/00 ,  C01G29/00 ,  C04B35/45 ,  H01B12/04 ,  H01B13/00 ,  H01L39/24

    CPC分类号： C04B35/4521 ,  C04B35/4525 ,  H01L39/248 ,  Y10S505/928 ,  Y10S505/93 ,  Y10T29/49014

    摘要： A silver tube with one open end is packed with a particulate mixture of reactants comprised of Bi.sub.2 CaSr.sub.2 Cu.sub.2 O.sub.8.+-.x, Ca.sub.2 CuO.sub.3, cupric oxide and lead oxide, the open end of the packed tube is plugged with silver, the resulting closed tube is swaged to increase the density of the packed mixture, the swaged tube is wire-drawn, uniaxial pressure is applied to the wire orienting the Bi.sub.2 CaSr.sub.2 Cu.sub.2 O.sub.8.+-.x crystals with their c-axis parallel to each other forming an initial tape, the initial tape is fired to convert part of the Bi.sub.2 CaSr.sub.2 Cu.sub.2 O.sub.8.+-.x crystals to Bi.sub.2-y Pb.sub.y Ca.sub.2 Sr.sub.2 Cu.sub.3 O.sub.10.+-.z crystals producing an intermediate tape containing dilated product, uniaxial pressure is applied to the resulting intermediate tape to remove the dilation in the product, and the pressed intermediate tape is fired to produce a tape comprised of silver enveloping a sintered body of Bi.sub.2-y Pb.sub.y Ca.sub.2 Sr.sub.2 Cu.sub.3 O.sub.10.+-.z.

    Process for making structure for a MCFC
    27.
    发明授权
    Process for making structure for a MCFC 失效
    为MCFC制作结构的过程

    公开(公告)号：US4581303A

    公开(公告)日：1986-04-08

    申请号：US719653

    申请日：1985-04-03

    申请人： Wayne D. Pasco ,  Ronald H. Arendt

    发明人： Wayne D. Pasco ,  Ronald H. Arendt

    IPC分类号： H01M8/02 ,  H01M8/14

    CPC分类号： H01M8/142 ,  H01M8/0295 ,  H01M2008/147 ,  H01M2300/0051 ,  H01M8/145 ,  Y02E60/526 ,  Y02P70/56

    摘要： A process of making a porous carbonate-containing structure for use in a molten carbonate fuel cell, wherein a suitable porous structure is prepared having disposed therein a metal salt selected from the alkali metals and the alkaline earth metals or mixtures thereof with at least a portion of the salt being a monobasic organic acid salt. The monobasic acid salt is converted to the carbonate in situ by heating in the presence of oxygen. Both electrode and electrolyte structures can be prepared. Formic acid is preferred.

    摘要翻译： 一种制备用于熔融碳酸盐燃料电池的含多孔碳酸盐结构的方法，其中制备合适的多孔结构，其中在其中设置选自碱金属和碱土金属的金属盐或其混合物与至少一部分 的盐是一元有机酸盐。 通过在氧气存在下加热将单酸酸盐原位转化为碳酸盐。 可以制备电极和电解质结构。 甲酸是优选的。

    Preparation of ultrafine BaZrO.sub.3
    28.
    发明授权
    Preparation of ultrafine BaZrO.sub.3 失效
    制备超细BaZrO3

    公开(公告)号：US4374117A

    公开(公告)日：1983-02-15

    申请号：US320367

    申请日：1981-11-12

    申请人： Ronald H. Arendt

    发明人： Ronald H. Arendt

    IPC分类号： C01G25/00 ,  C01G23/00

    CPC分类号： C01G25/00 ,  Y10S423/12

    摘要： A particulate mixture of an alkali metal hydroxide solvent, barium oxide in excess of stoichiometric amount, and zirconium oxide in about stoichiometric amount, is heated to melt the hydroxide solvent in which the barium oxide and zirconium oxide dissolve and react precipitating ultrafine barium meta-zirconate (BaZrO.sub.3).

    摘要翻译： 将碱金属氢氧化物溶剂，超过化学计量的氧化钡和约化学计量的氧化锆的颗粒状混合物加热熔化其中氧化钡和氧化锆溶解的氢氧化物溶剂并使沉淀的超细超纯锆酸钡反应 （BaZrO3）。

    Zircon retrieval
    29.
    发明授权
    Zircon retrieval 失效
    锆石检索

    公开(公告)号：US4361542A

    公开(公告)日：1982-11-30

    申请号：US324210

    申请日：1981-11-23

    申请人： Ronald H. Arendt

    发明人： Ronald H. Arendt

    IPC分类号： C01B33/20 ,  C01G25/00

    CPC分类号： C01B33/20

    摘要： Zircon, ZrSiO.sub.4, is retrieved from zircon sand comprised of ZrSiO.sub.4 crystals and contaminants including SiO.sub.2 and iron by comminuting an aqueous slurry of the sand with iron means exposing the contaminants, admixing the resulting comminuted sand slurry with concentrated nitric and hydrochloric acids producing ferric chloride in solution thereby removing its iron component, admixing the resulting suspension with a flocculating agent agglomerating the suspended particles, admixing the resulting agglomerated mass with concentrated hydrofluoric acid to dissolve its SiO.sub.2 component, recovering the resulting ZrSiO.sub.4, washing it with water and drying.

    摘要翻译： 锆石ZrSiO4从ZrSiO4晶体和包括SiO 2和铁的污染物的锆砂中回收，通过粉碎沙子的含水浆料，用铁将污染物暴露在外，将生成的粉碎砂浆与浓硝酸和产生氯化铁的盐酸混合 从而除去其铁组分，将得到的悬浮液与凝聚剂混合悬浮颗粒，将所得附聚物与浓缩氢氟酸混合以溶解其SiO 2组分，回收所得ZrSiO 4，用水洗涤并干燥。