| 摘要 |
An improved method for manufacture of multifilamentary superconductors of the A3B type having the A-15 crystal structure, such as Nb3Sn, is disclosed in which rods or wires of the A material are disposed throughout a matrix consisting of Cu and the B material in substantially elemental form. The matrix is formed by compaction of powders of Cu; powders of the B may be mixed therewith or the B material may be infiltrated into pores between the individual Cu particles after compaction. The resultant composite has A, B and Cu distributed uniformly throughout its volume and can be worked to any desired final shape and size for heat treatment to form the A3B material without intermediate annealing steps. |
