Manufacturing method of Nb3Al-based superconducting wire, primary composite material for manufacturing Nb3Al-based superconducting wire and manufacturing method thereof, and multi-core composite material for manufacturing Nb3Al-based superconducting wire

摘要

PPROBLEM TO BE SOLVED: To provide a manufacturing method for obtaining a primary composite for manufacturing a NbSB3/SBAl superconductive wire rod wherein wire disconnection is hardly generated until the diameter is reduced by surface reduction working, consequently, diffusion length of aluminum in Nb can be shortened in manufacturing the NbSB3/SBAl superconductive wire rod by the jelly roll process. PSOLUTION: In this method for manufacturing the primary composite 10 for manufacturing the NbSB3/SBAl superconductive wire rod by inserting a rolled laminated material 5 formed by overlapping a Nb containing sheet made of Nb or a Nb based alloy and Al containing sheet made of Al or an Al based alloy and winding it on the core into a cylindrical object 7 made of Cu or a Cu based alloy, In the Al containing sheet made of Al or the Al based alloy, a Fe content is suppressed to 0.05% or less (% means mass%, the same is applied hereinafter for the component ) and Si content is suppressed to 0.05% or less. PCOPYRIGHT: (C)2007,JPO&INPIT