公开(公告)号：EP1058321A3

公开(公告)日：2003-10-01

申请号：EP00304739.6

申请日：2000-06-05

申请人： JAPAN as represented by NATIONAL RESEARCH INSITUTE FOR METALS

发明人： Kikuchi, Akihiro, c/o Japan rep. Director General ,  Iijima, Yasuo, c/o Japan rep. Director General ,  Inoue, Kiyoshi, c/o Japan rep. Director General

IPC分类号： H01L39/24

CPC分类号： H01L39/2409 ,  Y10S505/918 ,  Y10S505/919

摘要： A process for producing an ultrafine multifilamentary superconducting Nb 3 (Al,Ge) or Nb 3 (Al,Si) wire capable of generating a high critical current density comprising: preparing a composite core material comprising an Al-(2 - 30)at.% Ge or Si alloy 1 µm or less in thickness uniformly incorporated into a Nb matrix at a volume ratio in a range of 1:2.5 to 1:3.5 fabricating a composite wire by embedding several tens to several millions of the resulting composite core materials in a cylindrical matrix material containing Nb; forming a A15-phase filament having a lower order in crystallinity inside the composite wire by a rapid heating and quenching treatment comprising rapidly heating the composite wire to a temperature of 1,700 °C or higher in 2 seconds, followed by continuously introducing it into a molten metal; coating the composite wire in the state above with copper (Cu) which functions as a superconductivity stabilizing material; and applying a post heat treatment in the temperature range of from 650 to 900 °C to the resulting product to recover the degree of crystallinity of the Nb 3 (Al,Ge) in the A15 compound.

摘要翻译： 一种能够产生高临界电流密度的超细多丝超导Nb3（Al，Ge）或Nb3（Al，Si）线的制造方法，包括：制备包含Al-（2-30）原子％Ge的复合芯材料 或Si合金的厚度均匀地掺入到Nb基体中，体积比为1：2.5〜1：3.5的范围。通过将复合材料线嵌入数十至数百万的复合芯材料 含有Nb的圆柱形基体材料; 通过快速加热和淬火处理形成复合线材内部具有低结晶度的A15相丝，其包括在2秒内将复合丝线快速加热至1700℃或更高的温度，然后将其连续引入熔融 金属; 在上述状态下用作为超导稳定材料的铜（Cu）涂覆复合线; 并在650-900℃的温度范围内对所得产物进行后热处理，以回收A15化合物中的Nb 3（Al，Ge）的结晶度。