Title :
Thermal Conductivity of Industrial
Wires Fabricated by Various Techniques
Author :
Bonura, M. ; Senatore, C.
Author_Institution :
Dept. of Appl. Phys., Univ. of Geneva, Geneva, Switzerland
Abstract :
We have developed a new experimental setup specifically designed for measuring thermal conductivity on technical superconductors in the range of temperatures 3-330 K in magnetic fields up to 21 T. Three Nb3Sn wires, produced by the powder-in-tube technique, the bronze route, and the internal tin restacked-rod process, respectively, have been investigated. We show that, due to the complexity of the architecture of these wires, direct measurement of thermal conductivity is required for a correct estimation of thermal stability in superconducting magnets.
Keywords :
niobium alloys; superconducting critical field; superconducting magnets; thermal conductivity; thermal conductivity measurement; thermal stability; tin alloys; type II superconductors; Nb3Sn; bronze route; industrial wires; internal tin restacked-rod process; magnetic fields; powder-in-tube technique; superconducting magnets; technical superconductors; temperature 3 K to 330 K; thermal conductivity measurement; thermal stability; Conductivity; Conductivity measurement; Copper; Temperature measurement; Thermal conductivity; Thermal stability; Wires; Niobium-tin; superconducting magnets; superconducting materials; thermal stability;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2012.2234203