Process for prorducing thallium-containing high-T.sub.c superconductors
in flowing gas atmospheres
    1.
    发明授权
    Process for prorducing thallium-containing high-T.sub.c superconductors in flowing gas atmospheres 失效
    在流动气体环境中生产含铊的高T型超导体的方法

    公开(公告)号:US5801126A

    公开(公告)日:1998-09-01

    申请号:US612844

    申请日:1996-09-17

    摘要: The process for producing high-T.sub.c superconductors containing thallium, calcium, barium and copper, possibly also lead and/or strontium, provides for a thallium-free precursor to be produced in a first reaction step and this to be then mechanically triturated, subsequently heated to temperatures in the range from 700.degree. to 950.degree. C. and heat treated for a period of at least 3 hours. The mixture is then cooled to ambient temperature and ground again. Finally, it is heat treated at temperatures of from 400.degree. to 500.degree. C. in a stream of pure oxygen. The thallium-free precursor is then triturated with Tl.sub.2 O.sub.3, if desired shaped into a shaped part and then oxidatively fired in a flowing gas atmosphere.

    摘要翻译: PCT No.PCT / EP94 / 03009 Sec。 371日期1996年9月17日 102(e)1996年9月17日PCT PCT 1994年9月8日PCT公布。 第WO95 / 08517号公报 日期1995年3月30日生产含有铊,钙,钡和铜的高Tc超导体的方法,也可能是铅和/或锶,提供在第一反应步骤中产生的无铊的前体, 机械研磨,随后加热至700-950℃的温度,并热处理至少3小时。 然后将混合物冷却至环境温度并再次研磨。 最后,在纯氧气流中,在400〜500℃的温度下进行热处理。 然后将无铊的前体用Tl 2 O 3研磨,如果需要,将其成型成成形部分,然后在流动的气体气氛中氧化烧制。