公开(公告)号：US5661113A

公开(公告)日：1997-08-26

申请号：US317353

申请日：1994-10-04

申请人： Steven Danyluk ,  Michael McNallan ,  Robert Troendly ,  Roger Poeppel ,  Kenneth Goretta ,  Michael Lanagan

发明人： Steven Danyluk ,  Michael McNallan ,  Robert Troendly ,  Roger Poeppel ,  Kenneth Goretta ,  Michael Lanagan

IPC分类号： H01L39/24

CPC分类号： H01L39/248 ,  Y10S505/786

摘要： A system and method for mechanically forming a ceramic superconductor product. A system for making the ceramic superconductor includes a metallic channel portion having a cross section for receiving a ceramic superconductor powder, a roll to mechanically reduce the channel cross section and included superconductor powder and a cap portion welded to the channel portion using a localized high energy source. The assembled bar is then mechanically reduced to form a tape or wire end product.

摘要翻译： 一种用于机械地形成陶瓷超导体产品的系统和方法。 用于制造陶瓷超导体的系统包括具有用于接收陶瓷超导体粉末的横截面的金属通道部分，用于机械地减小通道横截面并包括超导体粉末的辊和使用局部高能量焊接到通道部分的帽部分 资源。 然后将组装的棒材机械地还原以形成带或线端产品。

公开(公告)号：US06240619B1

公开(公告)日：2001-06-05

申请号：US08662515

申请日：1996-06-13

申请人： Uthamalingam Balachandran ,  Roger Poeppel ,  Pradeep Haldar ,  Leszek Motowidlo

发明人： Uthamalingam Balachandran ,  Roger Poeppel ,  Pradeep Haldar ,  Leszek Motowidlo

IPC分类号： H01L3924

CPC分类号： H01L39/248 ,  Y10T29/49014

摘要： A method of preparing wires or tapes including Bi-2223 superconductor material by providing oxide and carbonate sources of Bi, Sr, Ca, Cu and Pb, milling the material for a time not to exceed about 30 minutes but preferably not greater than 20 minutes to produce a homogeneous mixture. Then heat treating by calcining the milled mixture at a temperature of at least about 830° C. for a time not less than about 12 hours, followed by at least one additional milling for a time not to exceed about 20 minutes and one additional heat treatment, to produce an oxide powder having an average diameter in the 4 to 5 micron range. Then a silver or silver alloy tube is filled with the oxide powder, and shape formed into a rectangular tape. Then alternately thermally treating and mechanically working the tube filled with oxide powder by heating the filled tube to an elevated temperature of about 835° C. to 840° C. and reducing the diameter of the tube, repeating the thermal and mechanical treatment. The filled tube is held at the elevated temperature for a total time in the range of from about 48 hours to about 350 hours to provide Pb0.4, Bi1.8 Sr2.0 Ca2.2 Cu3 Ox where x is between 10 and 11.

摘要翻译： 通过提供Bi，Sr，Ca，Cu和Pb的氧化物和碳酸盐源制备Bi-2223超导体材料的线或带的制备方法，将材料研磨不超过约30分钟但优选不大于20分钟， 产生均匀的混合物。 然后通过在至少约830℃的温度下煅烧研磨的混合物进行热处理不少于约12小时的时间，然后至少另外研磨一次不超过约20分钟的时间，并进行一次额外的热处理 ，以产生平均直径在4至5微米范围内的氧化物粉末。 然后用银或银合金管填充氧化物粉末，并形成为矩形胶带。 然后通过将填充的管加热至约835℃至840℃的升高温度并且减小管的直径，重复热和机械处理，交替地热处理和机械加工填充有氧化物粉末的管。 将填充的管在高温下保持约48小时至约350小时的总时间，以提供x为10和11之间的Pb0.4，Bi1.8 Sr2.0 Ca2.2 Cu3 Ox。