Abstract
A fabrication process of iron-clad MgB2 superconducting tapes was developed by using a nano-sized precursor and highly deformed iron sheath. Quenching experiments demonstrate that the precursor fully reacts and forms MgB2 under a high pressure of 600 MPa provided by the deformed iron sheath. Very good grain connections as well as a high core density of 2.55 g cm(-3) were therefore obtained. High 20 K J(c) of 3.1 X 10(5), 1.6 x 10(5) and 4.9 x 10(4) A cm(-2) at self-field, I and 2 T, respectively, were acquired. The results suggest that using a nano-sized precursor approach to fabricate MgB2 superconducting tape is a very promising process.