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1. 发明申请

WO1995000457A1 UNSEGREGATED OXIDE SUPERCONDUCTOR SILVER COMPOSITE 审中-公开
标题翻译：非标准氧化物超导体银复合材料
公开(公告)号：WO1995000457A1
公开(公告)日：1995-01-05
申请号：PCT/US1994007131
申请日：1994-06-23
申请人： AMERICAN SUPERCONDUCTOR CORPORATION
发明人： AMERICAN SUPERCONDUCTOR CORPORATION , OTTO, Alexander , MASUR, Lawrence, J. , PODTBURG, Eric, R. , SANDHAGE, Kenneth, H. , CRAVEN, Christopher, A. , SCHREIBER, Jeffrey, D.
IPC分类号： C04B35/00
CPC分类号： H01L39/248 , C04B35/45 , C04B35/65
摘要： A method for forming unsegregated metal oxide-silver composites includes preparing a precursor alloy comprising silver and precursor elements of a desired metal oxide and oxidizing the alloy under conditions of high oxygen activity selected to permit diffusion of oxygen into silver while significantly restricting the diffusion of the precursor elements into silver, such that oxidation of the precursor elements to the metal oxide occurs before diffusion of the metallic elements into silver. Further processing of the metal oxide composite affords an oxide superconducting composite with a highly unsegregated microstructure. A novel precursor may be used in conjunction with the oxidation under conditions of high oxygen activity to further restrict segregation of metal oxide-silver composite. A precursor composite for preparation of an oxide superconductor includes a primary alloy phase of constituent elements of a desired oxide superconductor; and a secondary phase comprising copper, the secondary phase supported by the primary alloy phase. The composite may additionally include a matrix material for supporting the primary alloy phase and second phase disposed therein. The composite is oxidized to form an oxide superconductor composite.
摘要翻译：用于形成未分离的金属氧化物 - 银复合物的方法包括制备包含银的前体合金和期望的金属氧化物的前体元素，并在选择高氧活性的条件下氧化合金，以允许氧扩散到银中，同时显着地限制前体元素变成银，使得在将金属元素扩散到银之前，前体元素氧化成金属氧化物。金属氧化物复合物的进一步处理提供具有高度未偏析的微结构的氧化物超导复合材料。在高氧活性的条件下，新的前体可与氧化结合使用，以进一步限制金属氧化物 - 银复合物的分离。用于制备氧化物超导体的前体复合材料包括期望的氧化物超导体的构成元素的主合金相; 以及包含铜的第二相，第二相由主合金相负载。复合材料还可以包括用于支撑初级合金相的基体材料和设置在其中的第二相。复合材料被氧化形成氧化物超导体复合材料。

2. 发明申请

WO1997044832A1 IMPROVED TENSIONING PROCESS FOR MANUFACTURE OF SUPERCONDUCTING CERAMIC COMPOSITE CONDUCTORS 审中-公开
标题翻译：超导陶瓷复合导体制造改进的拉伸工艺
公开(公告)号：WO1997044832A1
公开(公告)日：1997-11-27
申请号：PCT/US1997008595
申请日：1997-05-21
申请人： AMERICAN SUPERCONDUCTOR CORPORATION
发明人： AMERICAN SUPERCONDUCTOR CORPORATION , LI, Qi , CHRISTOPHERSON, Craig, J. , RILEY, Gilbert, N., Jr. , CARTER, William, L. , MICHELS, William, J. , PODTBURG, Eric, R. , MASUR, Lawrence, J.
IPC分类号： H01L39/24
CPC分类号： H01L39/248 , Y10T29/49014
摘要： The combination of one or more high reduction drafts with controlled, low back tensions increases the range of deformation conditions over which dimensional tolerances and Je may be optimized. The method comprises the steps of: first, providing a precursor article comprising a metal matrix surrounding a plurality of filaments extending along the length of the article and comprising precursors to a desired superconducting ceramic; next, roll working the precursor article during a breakdown stage at a back tension less than the elastic to plastic transition thereshold of the composite during at least one high reduction roll working draft, and, then, sintering the rolled article to obtain the desired superconducting ceramic. In a preferred embodiment, the rolling step further comprises rolling the article at a front tension less than the elastic to plastic transition threshold of the rolled, unsintered article.
摘要翻译：一个或多个高减速牵引力与受控的低回力张力的组合增加了尺寸公差和Je可能被优化的变形条件的范围。该方法包括以下步骤：首先，提供包含金属基质的前体制品，所述金属基质围绕沿着所述制品的长度延伸的多根长丝，并且包括所需超导陶瓷的前体; 接下来，在击穿阶段期间，在至少一个高还原辊工作通风期间以小于复合材料的弹性至塑性转变阈值的背张力对前体制品进行辊加工，然后烧结轧制制品以获得所需的超导陶瓷。在优选实施例中，轧制步骤还包括以低于轧制未烧结制品的弹性 - 塑性转变阈值的前拉力滚动制品。

3. 发明申请

WO1993023884A1 STRONGLY-LINKED OXIDE SUPERCONDUCTOR AND A METHOD OF ITS MANUFACTURE 审中-公开
标题翻译：强连接氧化物超导体及其制造方法
公开(公告)号：WO1993023884A1
公开(公告)日：1993-11-25
申请号：PCT/US1993003571
申请日：1993-04-13
申请人： AMERICAN SUPERCONDUCTOR CORPORATION
发明人： AMERICAN SUPERCONDUCTOR CORPORATION , MASUR, Lawrence, J. , PODTBURG, Eric, R.
IPC分类号： H01L39/24
CPC分类号： C04B35/65 , C04B35/45 , H01L39/2419 , H01L39/2477 , Y10S505/704 , Y10S505/736 , Y10S505/74 , Y10S505/742 , Y10S505/776 , Y10S505/78 , Y10S505/813 , Y10T29/49014
摘要： A strongly-linked polycrystalline oxide superconductor article includes an oxide superconductor selected from the group consisting of 124-type and 247-type oxide superconductors having fine, highly aligned oxide superconductor grains less than 50 mu m along a longest dimension. The oxide superconductor article has at least a 25 % retention of critical current density in a 0.1 Tesla field. A method for preparing a strongly-linked oxide superconductor includes shaping a finely divided metallic precursor of an oxide superconductor; oxidizing the finely divided metallic precursor to produce a finely divided sub-oxide species while avoiding conversion of an appreciable amount of the sub-oxide species into the oxide superconductor; annealing and deforming the article, in either order, the annealing carried out at a temperature and for a time sufficient to convert some of the sub-oxide species into fine grains of the oxide superconductor thereby forming a mixture of sub-oxide species and oxide superconductor and the deformation carried out such that the fine grains of oxide superconductor are rotated into alignment parallel to an intended current carrying direction of the article without fracturing or pulverization of the oxide superconductor grains; alternating annealing and deformation of the article until no further improvement in alignment is observed; and subjecting the aligned grains to a final anneal in order to react any remaining sub-oxide species and maximize the growth and sintering of existing aligned grains.
摘要翻译：强连接的多晶氧化物超导体制品包括选自124型和247型氧化物超导体的氧化物超导体，其具有沿着最长尺寸小于50微米的精细高度排列的氧化物超导体颗粒。氧化物超导体制品在0.1特斯拉场中具有至少25％的临界电流密度保留。一种制备强连接的氧化物超导体的方法包括使细分的氧化物超导体的金属前体成形; 氧化细碎的金属前体以产生细碎的亚氧化物物质，同时避免将相当数量的亚氧化物物质转化成氧化物超导体; 对制品进行退火和变形，以任何顺序进行退火，该退火在足以将一些氧化物种类转化为氧化物超导体的细晶粒的温度和时间下进行，从而形成次氧化物种类和氧化物超导体的混合物并且进行变形，使得氧化物超导体的细晶粒在不破坏或粉碎氧化物超导体晶粒的同时使其平行于制品的预期电流方向旋转成对准; 交替退火和变形，直到观察不到进一步改善; 并使对准的晶粒进行最终退火，以使任何剩余的亚氧化物物质反应并使现有对准晶粒的生长和烧结最大化。

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