Niobium-aluminum precursor wire, niobium-aluminum precursor twisted wire, niobium-aluminum superconducting wire, and niobium-aluminum superconducting twisted wire

Abstract

The purpose of the present disclosure is to provide a niobium-aluminum precursor wire having properties such as expression of flexibility and ensuring a large single-wire length, as well as a twisted wire, a superconducting wire, and a superconducting twisted wire formed of the niobium-aluminum precursor wire. The present disclosure provides a niobium-aluminum precursor wire and a twisted wire using the same, the niobium-aluminum precursor wire including: a rod-like winding core () formed of a stabilized copper, or a stabilized copper and an unstabilized copper; a laminated body () that is wound around the winding core () and that is formed of an aluminum foil and a niobium foil laminated one on the other; and a covering body () that covers the circumference of the laminated body and that is formed of a stabilized copper, or a stabilized copper and an unstabilized copper.