发明名称 |
Process for the treatment of a superconducting ceramic article of the type (Ln)1Ba2Cu30(7-8). |
摘要 |
<p>Process for the treatment of an article made of superconductive ceramic of (Ln)1Ba2Cu3O7- delta type, where Ln is chosen from the rare-earth group with the exception of cerium and terbium, which process is intended to reduce the value of delta , according to which a heat treatment of the said article is performed under oxidising atmosphere, characterised in that, during the said treatment, an electrical current with a density of between 0.1 and 2 A/cm<3> is passed through the said article, the said treatment atmosphere exhibiting a partial oxygen pressure of between 0.1 and 1 atmosphere, the temperature of the treatment being between 200 DEG C and 500 DEG C, the duration of the said treatment being between 1 hour and 200 hours.</p> |
申请公布号 |
EP0545221(A1) |
申请公布日期 |
1993.06.09 |
申请号 |
EP19920119969 |
申请日期 |
1992.11.24 |
申请人 |
ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE |
发明人 |
WICKER, ALAIN;BONNET, JEAN-PIERRE;SANZ, MARIANO;DORDOR, PATRICE;MAGRO, CHRISTOPHE |
分类号 |
C01G1/00;C01G3/00;C04B35/00;C04B35/45;H01B12/00;H01B13/00;H01L39/24 |
主分类号 |
C01G1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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