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    Method of making a BSCCO superconductor article
    36.
    发明授权
    Method of making a BSCCO superconductor article 失效
    制造BSCCO超导体制品的方法

    公开(公告)号：US06960554B2

    公开(公告)日：2005-11-01

    申请号：US10133107

    申请日：2002-04-26

    申请人： Yibing Huang ,  Gilbert N. Riley, Jr. ,  Noe DeMedeiros

    发明人： Yibing Huang ,  Gilbert N. Riley, Jr. ,  Noe DeMedeiros

    IPC分类号： H01L39/24 ,  C04B33/32

    CPC分类号： H01L39/2464 ,  H01L39/248

    摘要： A method of making an oxide superconductor article includes converting an oxide superconducting precursor into an oxide superconductor by thermo-mechanical processing using intermediate rolling deformation and heat treatment (including liquid-phase sintering and low temperature baking) and applying an additional heat treatment after the material is fully processed (including optional liquid-phase sintering and low temperature baking) to decompose any secondary phase remaining at the grain boundaries and to promote diffusion of the secondary phase into the oxide grain, where they form 2223 phase. The material has a better superconducting grain connectivity and improved superconducting transport property.

    摘要翻译： 制造氧化物超导体制品的方法包括通过使用中间轧制变形和热处理（包括液相烧结和低温烘烤）的热机械加工将氧化物超导前体转变为氧化物超导体，并在材料之后进行额外的热处理 被完全加工（包括可选的液相烧结和低温烘烤）以分解残留在晶界处的任何第二相并促进第二相扩散到氧化物颗粒中，其中它们形成2223相。 该材料具有更好的超导晶粒连接性和改善的超导传输性能。

    Processing of oxide superconductors
    39.
    发明授权
    Processing of oxide superconductors 失效
    氧化物超导体的加工

    公开(公告)号：US06284712B1

    公开(公告)日：2001-09-04

    申请号：US09451742

    申请日：1999-11-30

    申请人： Alexander Otto ,  Gilbert N. Riley, Jr. ,  William L. Carter

    发明人： Alexander Otto ,  Gilbert N. Riley, Jr. ,  William L. Carter

    IPC分类号： C04B3564

    CPC分类号： H01L39/2464 ,  Y10S505/742 ,  Y10S505/782 ,  Y10S505/785

    摘要： A method for preparing a BSCCO-2223 oxide superconducting article includes annealing an oxide superconductor article comprised of BSCCO-2223 oxide superconductor at a temperature selected from the range of about 500° C.≦T≦787° C. and an annealing atmosphere having an oxygen pressure selected from within the region having a lower bound defined by the equation, PO2(lower)≧3.5×1010exp(−32,000/T+273) and an upper bound defined by the equation, PO2(upper)≦1.1×1012exp(−32,000/T+273). The article is annealed for a time sufficient to provide at least a 10% increase in critical current density as compared to the critical current density of the pre-anneal oxide superconductor article. An oxide superconductor having the formula Bi2−yPbySr2Ca2Cu3O10+x, where 0≦x≦1.5 and where 0≦y≦0.6 is obtained, the oxide superconductor characterized by a critical transition temperature of greater than 111.0 K, as determined by four point probe method.

    摘要翻译： 制备BSCCO-2223氧化物超导制品的方法包括在选自约500℃的温度范围内对由BSCCO-2223氧化物超导体组成的氧化物超导体制品进行退火。<= T <= 787℃和退火气氛 具有从具有由下式定义的下限的区域内选择的氧气压力：PO2（下）≥3.5×1010exp（-32,000 / T + 273），由上式定义的上限PO2（上）<= 1.1 x1012exp（-32,000 / T + 273）。 与预退火氧化物超导体制品的临界电流密度相比，该制品退火足以提供临界电流密度至少10％的时间。 具有式Bi2-yPbySr2Ca2Cu3O10 + x的氧化物超导体，其中0 <= x <= 1.5，其中0 <= y <= 0.6，所述氧化物超导体的特征在于临界转变温度大于111.0K，如由 四点探针法。