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    High corrosion resistant amorphous alloys
    3.
    发明授权
    High corrosion resistant amorphous alloys 失效
    高耐蚀非晶合金

    公开(公告)号：US5460663A

    公开(公告)日：1995-10-24

    申请号：US231591

    申请日：1994-04-20

    申请人： Koji Hashimoto ,  Jinhan Kim ,  Hideaki Yoshioka ,  Hiroki Habazaki ,  Asahi Kawashima ,  Katsuhiko Asami

    发明人： Koji Hashimoto ,  Jinhan Kim ,  Hideaki Yoshioka ,  Hiroki Habazaki ,  Asahi Kawashima ,  Katsuhiko Asami

    IPC分类号： C22C19/05 ,  C22C27/02 ,  C22C27/06 ,  C22C45/00 ,  C22C45/10

    CPC分类号： C22C45/10

    摘要： Amorphous alloys having an extremely high corrosion resistance comprise Cr and at least one element selected from Ta and Nb, as essential components, and are spontaneously passive owing to the formation of stable protective films, even in very corrosive environments such as poorly oxidizing concentrated hydrochloric acid. The amorphous alloy may further include one or more elements appropriately selected from other alloying elements of Al, Ti, Zr, Fe, Co, Ni, Cu, Mo and W. The amorphous alloys have advantageous properties, such as very high corrosion resistance, high corrosion resistance at elevated temperatures and high wear resistance, and, therefore are useful in chemical plants or other industrial and domestic applications.

    摘要翻译： 具有非常高的耐腐蚀性的非晶合金包括Cr和至少一种选自Ta和Nb的元素作为必要组分，并且由于形成稳定的保护膜而自发被动，即使在非常腐蚀的环境中，例如氧化不良的浓盐酸 。 非晶合金还可以包括从Al，Ti，Zr，Fe，Co，Ni，Cu，Mo和W的其他合金元素中适当选择的一种或多种元素。非晶合金具有优异的性能，例如非常高的耐腐蚀性，高 在高温下的耐腐蚀性和高耐磨性，因此在化工厂或其他工业和家用应用中是有用的。

    Surface activated amorphous and supersaturated solid solution alloys for electrodes in the electrolysis of solutions and the method for their surface activation
    5.
    发明授权
    Surface activated amorphous and supersaturated solid solution alloys for electrodes in the electrolysis of solutions and the method for their surface activation 失效
    用于溶液电解的电极的表面活化的非晶和过饱和固溶体合金及其表面活化的方法

    公开(公告)号：US4770949A

    公开(公告)日：1988-09-13

    申请号：US892827

    申请日：1986-08-04

    申请人： Koji Hashimoto ,  Naokazu Kumagai ,  Katsuhiko Asami ,  Asahi Kawashima

    发明人： Koji Hashimoto ,  Naokazu Kumagai ,  Katsuhiko Asami ,  Asahi Kawashima

    IPC分类号： C22C45/04 ,  C25B11/00 ,  C25B11/04 ,  C22C5/04

    CPC分类号： C22C45/04 ,  C25B11/00 ,  C25B11/04 ,  Y10T428/12993

    摘要： Electrode materials and method for their surface activation are described. Alloys consisting of at least one element of the group consisting of Nb, Ta, Ti and Zr, at least one element of the group consisting of Ru, Rh, Pd, Ir and Pt, and balance being Ni are prepared by methods for preparation of amorphous alloys, and are amorphous or supersaturated solid solution. Their surfaces are activated to enhance electrocatalytic activity by enrichment of electrocatalytically active platinum group elements in the surface region in addition to surface roughening as a result of selective dissolution of Ni, Nb, Ta, Ti and Zr from the alloys during immersion in corrosive solutions. The surface-activated amorphous and supersaturated solid solution alloys possess high electrocatalytic activity and selectivity for a specific reaction as well as high corrosion resistance.

    摘要翻译： 描述了用于表面活化的电极材料和方法。 由Nb，Ta，Ti和Zr组成的组中的至少一种元素组成的合金，由Ru，Rh，Pd，Ir和Pt组成的组中的至少一种元素，余量为Ni的合金是通过制备 非晶合金，并且是无定形或过饱和固溶体。 由于Ni，Nb，Ta，Ti和Zr在浸入腐蚀性溶液中时选择性溶解Ni，Nb，Ta，Ti和Zr，因此除了表面粗糙化之外，通过富集表面区域中的电催化活性铂族元素，使表面活化，从而提高电催化活性。 表面活化的非晶和过饱和固溶体合金具有高的电催化活性和对特定反应的选择性以及高耐腐蚀性。

    Amorphous alloy catalysts for conversion of exhaust gases to harmless gases
    7.
    发明授权
    Amorphous alloy catalysts for conversion of exhaust gases to harmless gases 失效
    用于将废气转化为无害气体的无定形合金催化剂

    公开(公告)号：US5326736A

    公开(公告)日：1994-07-05

    申请号：US856159

    申请日：1992-04-01

    申请人： Koji Hashimoto ,  Kiyohiro Teruuchi ,  Hiroki Habazaki ,  Asahi Kawashima ,  Katsuhiko Asami

    发明人： Koji Hashimoto ,  Kiyohiro Teruuchi ,  Hiroki Habazaki ,  Asahi Kawashima ,  Katsuhiko Asami

    IPC分类号： B01J21/06 ,  B01J23/89 ,  B01D53/36 ,  B01J27/128

    CPC分类号： B01J21/063 ,  B01J23/8913 ,  B01J23/892 ,  B01J23/898 ,  B01J21/066

    摘要： This invention relates to a catalyst for cleaning exhaust gas, which is prepared by dipping in hydrofluoric acid an amorphous alloy composed of 20 to 80 atom % of one or more elements selected from the group consisting of Nb, Ta, Ti and Zr (the sum of Nb and Ta being up to 70 atom %), 0.5 to 20 atom % of one or more elements selected from the group consisting of Ru, Pd, Rh, Pt and Ir, and the balance of one or two of Ni and Co. This catalyst can clean at a low temperature an exhaust gas containing NO or CO discharged from apparatuses or engines wherein various organic substances are burnt.

    摘要翻译： PCT No.PCT / JP89 / 00979 Sec。 371日期：1992年4月1日 102（e）日期1992年4月1日PCT PCT 1989年9月27日PCT公布。 公开号WO91 / 04790 日本专利申请日1991年04月18日。本发明涉及一种用于清洗废气的催化剂，其通过在氢氟酸中浸渍由20〜80原子％的选自Nb，Ta ，Ti和Zr（Nb和Ta的总和高达70原子％），0.5-20原子％的选自Ru，Pd，Rh，Pt和Ir的一种或多种元素，余量为1 或者两种Ni和Co。该催化剂可以在低温下清洁含有NO或CO的废气，其排放有各种有机物质燃烧的装置或发动机。