Properties of Ti Alloyed Multifilamentary Nb sub 3 Sn Wires by Internal Tin Process

摘要

Influence of Ti addition to the Sn core on the critical current density J/sub c/ of multifilamentary Nb sub 3 Sn wires fabricated by the internal tin process was studied. The addition (approx. 1.5 wt % Ti) improved the values of J/sub c/ at very high magnetic fields over those for the pure Nb sub 3 Sn, e.g., J/sub c/ approx. 140 A/mm exp 2 at 18 T. This is 3 to 4 times greater than a similarly processed pure Nb sub 3 Sn wire and is within approx. 10% of the highest critical current density measured for the Ti alloyed bronze processed Nb sub 3 Sn wires. (ERA citation 10:007074)