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    Composite electroconductive powder, electroconductive paste, process for producing electroconductive paste, electric circuit and process for producing electric circuit
    3.
    发明授权
    Composite electroconductive powder, electroconductive paste, process for producing electroconductive paste, electric circuit and process for producing electric circuit 失效
    复合导电粉末，导电浆料，导电浆料生产工艺，电路及电路生产工艺

    公开(公告)号：US5951918A

    公开(公告)日：1999-09-14

    申请号：US875779

    申请日：1997-08-05

    申请人： Hideji Kuwajima ,  Shozo Yamana ,  Junichi Kikuchi ,  Hisashi Dokochi ,  Toshikazu Ono ,  Yoshikatsu Mikami ,  Hiroshi Wada

    发明人： Hideji Kuwajima ,  Shozo Yamana ,  Junichi Kikuchi ,  Hisashi Dokochi ,  Toshikazu Ono ,  Yoshikatsu Mikami ,  Hiroshi Wada

    IPC分类号： H01B1/02 ,  H01B1/22 ,  H05K1/09 ,  B05D5/12 ,  B22F1/02

    CPC分类号： H01B1/22 ,  H01B1/02 ,  H05K1/095

    摘要： An electroconductive paste for forming an electric circuit which is low in resistivity, high in electroconductivity and minimized in change of resistivity even after a thermal shock test and/or a humidity and DC applied test, can be obtained by using a composite electroconductive powder comprising a flake-like electroconductive powder made of a material such as silver, a silver alloy, a silver-coated copper powder or a silver-coated copper alloy powder and an unsteady-shaped electroconductive powder such as a reduced silver powder. Also, by using a composite electroconductive powder comprising an electroconductive powder having an aspect ratio of 6 or greater and an electroconductive powder having an aspect ratio of 5 or less, there can be obtained an electroconductive paste which is low in resistivity, high in electroconductivity, minimized in change of resistivity even after a thermal shock test and/or a humidity and DC applied test, and capable of improving probability of contact between the electroconductive powder particles, elevating electroconductivity of the electric circuit, and also raising electroconductivity especially when a circuit is printed on a sheet-like substrate and the printed circuit is pressed. The electric circuit formed on the surface of a substrate by using such an electroconductive paste is low in resistivity, high in electroconductivity and also excellent in migration resistance.

    摘要翻译： PCT No.PCT / JP96 / 00271 Sec。 371日期：1997年8月5日 102（e）日期1997年8月5日PCT提交1996年2月8日PCT公布。 公开号WO96 / 24938 日期1996年8月15日，即使在热冲击试验和/或湿度和直流施加试验之后，形成电阻率低，导电性高，电阻率变化最小的电路用导电糊也可以通过使用 包含由诸如银，银合金，银涂层铜粉或银涂覆铜合金粉末的材料制成的片状导电粉末和诸如还原银粉末的非稳态导电粉末的复合导电粉末。 此外，通过使用包含纵横比为6以上的导电性粉末和长径比为5以下的导电性粉末的复合导电性粉末，可以得到电导率低，导电性高的导电性糊剂， 即使在热冲击试验和/或湿度和DC施加试验之后电阻率的变化也最小化，并且能够提高导电粉末颗粒之间的接触概率，提高电路的导电性，并且还提高导电性，特别是当电路为 印刷在片状基板上，印刷电路被按压。 通过使用这种导电膏在基板的表面上形成的电路电阻率低，导电性高，耐迁移性优异。

    Bi-Pb-Sr-Mg-Ba-Ca-Cu-O oxide superconductors and production thereof
    4.
    发明授权
    Bi-Pb-Sr-Mg-Ba-Ca-Cu-O oxide superconductors and production thereof 失效
    Bi-Pb-Sr-Mg-Ba-Ca-Cu-O氧化物超导体及其制备

    公开(公告)号：US5194421A

    公开(公告)日：1993-03-16

    申请号：US794694

    申请日：1991-11-20

    申请人： Shuichiro Shimoda ,  Toranosuke Ashizawa ,  Keiji Sumiya ,  Hideji Kuwajima ,  Minoru Ishihara ,  Shozo Yamana

    发明人： Shuichiro Shimoda ,  Toranosuke Ashizawa ,  Keiji Sumiya ,  Hideji Kuwajima ,  Minoru Ishihara ,  Shozo Yamana

    IPC分类号： C01G29/00 ,  H01L39/12

    CPC分类号： H01L39/126 ,  C01G29/006 ,  C01P2006/32 ,  C01P2006/40 ,  Y10S505/776 ,  Y10S505/782

    摘要： The present invention provides an oxide superconductor which is mainly composed of bismuth, lead, strontium, calcium, magnesium, and copper and has the composition represented by the formula:Bi.sub.1-A Pb.sub.A Sr.sub.1-B Mg.sub.B Ca.sub.1 Cu.sub.1.7.+-.0.3 Oxwherein A=0.15-0.35 and B=0.05-0.3 in which numerals represent atomic ratio and an oxide superconductor which is mainly composed of bismuth, lead, strontium, calcium, magnesium, barium and copper and has the composition represented by the formula:Bi.sub.1-A Pb.sub.A Sr.sub.1-(B+C) (Mg.sub.B Ba.sub.C)Ca.sub.1 Cu.sub.1.7.+-.0.3 Oxwherein A=0.15-0.35, B=0.05-0.3 and C=0.02-0.2 in which numerals represent atomic ratio. Methods for producing these superconductors are also provided.

    摘要翻译： 本发明提供主要由铋，铅，锶，钙，镁和铜组成的氧化物超导体，其组成由下式表示：Bi1-APbASr1-BMgBCa1Cu1.7 +/- 0.3Ox其中A = 0.15〜 0.35和B = 0.05-0.3，其中数字表示原子比，主要由铋，铅，锶，钙，镁，钡和铜组成的氧化物超导体，其组成由下式表示：Bi1-APbASr1-（B + C）（MgBBaC）Ca1Cu1.7 +/- 0.3Ox其中A = 0.15-0.35，B = 0.05-0.3和C = 0.02-0.2，其中数字表示原子比。 还提供了制造这些超导体的方法。