Manufacturing process for superconductor of Bi-Pb-Sr-Ca-Cu-O series

摘要

A manufacturing process of a high temperature superconductor is disclosed. First, powders of Bi₂O₃ , SrCo₃ , CaCo₃ , CuO and PbO are measured in the ratios of 1.4 : 0.6 : 2 : 2 : 3.8, and then, they are crushed and mixed together by means of a ball mill. Then the mixture is calcinated two or three times at a temperature of 600 - 800° C for 24 - 48 hours, and then, sintering is carried out at a temperature of 800 - 900° C for 48 hours. Then a cold pressing and a hot pressing are carried out, and finally a sintering is carried out for two days. According to the present invention, the manufacturing period is shortened.