用电流加热熔化涂层法制备出结构致密、涂层均匀的 Bi 系/Ag 基超导复合带。条带可连续制备,且有较强的抗弯曲性能,在3mm 弯曲半径下不出现裂纹。热外理后样品的扫描电镜(SEM)形貌分析、EDAX 成分分析及表面 X 射线衍射结果表明,复合带界面结合紧密,超导层结构致密,成分均匀,而且组织有明显的织构特性。经860℃,50h 处理的样品,在零磁场、77K 下,临界电流密度为2.2×10~2A/cm~2。 The Bi / Ag-based superconducting composite tape with dense structure and uniform coating was prepared by electric current heating and melting coating. Strips can be continuously prepared, and have strong resistance to bending, bending at 3mm radius does not appear. Scanning electron microscopy (SEM) morphology analysis, EDAX analysis and surface X-ray diffraction results of the sample after heat treatment show that the interface of the composite tape is tightly bonded, the structure of the superconducting layer is dense, the composition is uniform, and the texture of the structure is obvious. After 860 ℃ and 50h treatment, the critical current density is 2.2 × 10 ~ 2A / cm ~ 2 under zero magnetic field and 77K.