Mechanical properties, interface reactions and transport current densities of multi-core MgB2/Ti/Cu/SS wire

作者：Husek I^*; Kovac P

来源：Superconductor Science and Technology, 2010, 23(7): 075012.

DOI：10.1088/0953-2048/23/7/075012

Multi-core MgB2/Ti/Cu/SS composite wire has been made by the in situ approach. Mechanical properties, interdiffusion reactions and critical currents were studied after heat treatments at temperatures between 500 and 850 degrees C. Cu diffusion into the Ti layer occurs for all samples, resulting in the formation of intermetallic compounds at the Cu/Ti interface. EDX analysis has revealed the temperature dependence of all interface reactions. In spite of element reactions the critical current densities 10(5) A cm(-2) and 10(4) A cm(-2) were measured in liquid helium at magnetic fields 5 T and 9.5 T, respectively. 10(4) A cm(-2) at 20 K is measured in an external field of 4 T.

• 出版日期2010-7
• 单位中国科学院电工研究所