Abstract
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.
Original language | English |
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Article number | 054012 |
Journal | Superconductor Science and Technology |
Volume | 25 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2012 May 1 |
ASJC Scopus subject areas
- Ceramics and Composites
- Condensed Matter Physics
- Metals and Alloys
- Electrical and Electronic Engineering
- Materials Chemistry