TY - JOUR
T1 - Mechanical properties of MgB 2 superconducting wires fabricated by internal Mg diffusion process
AU - Nishijima, G.
AU - Ye, S. J.
AU - Matsumoto, A.
AU - Togano, K.
AU - Kumakura, H.
AU - Kitaguchi, H.
AU - Oguro, Hidetoshi
PY - 2012/5
Y1 - 2012/5
N2 - Mechanical properties of MgB 2 monocore superconducting wires fabricated by an internal Mg diffusion (IMD) process and a powder-in-tube (PIT) process were investigated. The uniaxial tensile strain dependence of critical current (I c) and the transverse compressive stress dependence of I c were investigated at 4.2K, 10T. The IMD-processed MgB 2 wire showed a large irreversibility tensile strain limit ( irr=0.67%) and transverse compressive stress tolerance of 206MPa, whereas the PIT-processed wire had 0.51% and 160MPa. Furthermore, the tensile strain sensitivity of I c for the IMD-MgB 2 wire was smaller than that for the PIT-MgB 2 wire. Consequently, mechanical properties of IMD-processed MgB 2 superconducting wires are better than those of PIT-processed wires.
AB - Mechanical properties of MgB 2 monocore superconducting wires fabricated by an internal Mg diffusion (IMD) process and a powder-in-tube (PIT) process were investigated. The uniaxial tensile strain dependence of critical current (I c) and the transverse compressive stress dependence of I c were investigated at 4.2K, 10T. The IMD-processed MgB 2 wire showed a large irreversibility tensile strain limit ( irr=0.67%) and transverse compressive stress tolerance of 206MPa, whereas the PIT-processed wire had 0.51% and 160MPa. Furthermore, the tensile strain sensitivity of I c for the IMD-MgB 2 wire was smaller than that for the PIT-MgB 2 wire. Consequently, mechanical properties of IMD-processed MgB 2 superconducting wires are better than those of PIT-processed wires.
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U2 - 10.1088/0953-2048/25/5/054012
DO - 10.1088/0953-2048/25/5/054012
M3 - Article
AN - SCOPUS:84860299306
SN - 0953-2048
VL - 25
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
IS - 5
M1 - 054012
ER -