Experimental results on Nb 25 wt.% Ta 45 wt.% Ti superconducting wire

Several small billets with NbTi binary and Nb 25 wt.% Ta 45 wt.% Ti ternary alloy filaments were made and fabricated into fine wire after subjecting the alloys to different treatment conditions. J/sub c/ results at 4.2 K and 1.8 K from binary and ternary materials, which were prepared under the identical conditions, are compared. The results of an alpha -Ti precipitation study on the two alloys are also presented. The J/sub c/ results are compared with those from some earlier work on a Nb 15 wt.% Ta 44 wt.% Ti material.>