Abstract
Aim: Creation of multilayer superconducting tape made of Nb-Ti alloy.
 Methods: Using the methods of diffusion welding and packet rolling, for two cycles the prototypes of a multilayer tape based on a superconducting Nb50%Ti alloy were made. Copper was used as a stabiliser of the superconducting state of the conductor. At the initial stage, a multilayer Nb-Ti pack was assembled from niobium and titanium foils. Copper stabilising layers were laid in the pack in the 2nd cycle of tape manufacturing. The mutual diffusion between the Nb- and Ti-layers took place generally at the expense of niobium diffusing into the layers of titanium, with the Nb-50%Ti alloy emerging in their place.
 Results: Measurements of the critical current Ic with a perpendicular and parallel orientation of the magnetic field relative to the plane of the layers in the composite showed large anisotropy of Ic, which was the result of the superconducting vortices fixing exclusively at the boundaries of the Nb-Ti-alloy and the Nb-solid solution. In general, the composite was capable of carrying large current in magnetic fields of 5-6 T without long-lasting low-temperature annealing for -phase deposition, which is necessary in the case of Nb-Ti alloy composites produced by the known technology.
Highlights
Методы: Методами диффузионной сварки и пакетной прокатки за два цикла изготовлены опытные образцы многослойной ленты на основе сверхпроводящего сплава NbTi-сплава и твердого раствора (Nb) 50%Ti
В нашем же случае образование ювенильных поверхностей полезно ещё и тем, что через них более беспрепятственно осуществлялась взаимная диффузия разнородных атомов по сравнению с тем, если бы прокатка не предпринималась
Proceedings of the Sixth All-Union Conference on the Problem of Superconducting Materials “Superconducting alloys and compounds”
Summary
НАУЧНЫЕ И ПРАКТИЧЕСКИЕ РАЗРАБОТКИ Направление «Физика конденсированного состояния». Зверев Институт физики твердого тела РАН (Черноголовка, Московская обл., Россия). МНОГОСЛОЙНАЯ СВЕРХПРОВОДЯЩАЯ ЛЕНТА СПЛАВА Nb50Ti, ПОЛУЧЕННАЯ ИЗ КОМПОЗИТА Cu/Nb/Ti
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