FABRICATION OF (BI,PB)(2)SR2CA2CU3O10 TAPES BY A TUBULAR WIRE PROCESS

(Bi,Pb)(2)Sr2Ca2Cu3O10 tapes have been fabricated by a tubular wire pr ocess which offers the advantages of near-net shape manufacturing and a lower ratio of silver to superconductor compared with the convention al powder-in-tube technique. Critical currents as high as 15 A have be en achieved at 77 K in short sections of tapes fabricated by this proc ess. The development of critical current with heat treatment time and the magnetic-field dependence of critical current of the tapes made by this process are found to be similar to those of tapes fabricated und er identical conditions by the powder-in-tube technique.