Solid-state (bronze process) V3Ga from a V-Al alloy core

V3Ga has been prepared as a single-filament wire by the solid-state reaction of a composite consisting of a vanadium 10.1 at.% aluminum alloy core in a bronze matrix of copper 16.7 at.% gallium. Reaction temperatures varied from 525 to 750 0C. Reacted layer thicknesses are found to increase as (reaction time)/sup 1/2/. Rates of layer growth and activation energies are compared for a variety of starting composites. The addition of Al to the core enhances the rate of growth of the V3Ga layer, particularly at temperatures below 600 0C. Aluminum is incorporated within the V3Ga layer to the extent of 2--7.5 at.%. The superconducting transitions have onset temperatures of 15.0--15.3 K, with midpoints of 14.0--14.6 K. The (paramagnetically limited) upper critical fields at 4.2 K are 21--22 T. Critical-current densities were measured up to the critical field and approach those of Howe and Weinmann for material with gallium in the core. The form of the dependence of pinning force on field differs from that of Howe and Weinmann's specimens in which a different pinning mechanism must operate