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研究了用粉末装管技术制备磁体用多芯Bi－2223／Ag超导带材的工艺和性能。结果表明，得到的氧化物芯丝均匀的多芯Bi－2223／Ag超导带材，其Bi－2223单相性较好巨晶粒具有c轴取向。在77K，OT下，短带的临界电流密度Jc达2．2×104A／cm2（判据1μV／cm）。用此带制做的小型超导磁体（外径为85mm，内径10mm，高60mm），在4．2K和77K下，磁体通过的；临界电流Ic分别为135A和17A（判据1μV／cm），对应此电流，该磁体产生的磁场分别为1．04T和0．13T。
The technology and performance of multi-core Bi-2223 / Ag superconducting tapes prepared by powder tube technology were studied. The results show that the obtained multi-core Bi-2223 / Ag superconducting tape with uniform oxide core filaments has a c-axis orientation of the monophasic Bi-2223 macrocrystalline grains. Under 77K, OT, the critical current density Jc of short strip reaches 2.2 × 104A / cm2 (criterion 1μV / cm). The small superconducting magnet (85 mm in outer diameter, 10 mm in inner diameter and 60 mm in height) manufactured by this tape passed the magnets at 4.2 K and 77 K; the critical currents Ic were 135 A and 17 A, respectively (Criterion 1 μV / cm) , Corresponding to this current, the magnetic field generated by the magnet is 1.04T and 0.13T respectively.