| 摘要 |
A superconductor of Bi-Pb-Sr-Ca-Cu-O series and a manufacturing process are disclosed. First, Bi2O3 , SrCo3 , CaCo3 , and CuO are measured in proper ratios, and they are mixed together, before they are crushed. The mixture is calcinated two or three times at a temperature at 600 - 750 DEG C, and then, the mixture is crushed again. Then the mixture is sintered at a temperature at 800 - 900 DEG C to obtain a composition of Bi4, Sr4.5, Ca4.5, Cu6 and Oy. Then Pb is added to the composition in the amount of a 1 - 2 mole ratio, and then, the mixture is sintered at a temperature of 800 - 850 DEG C for 20 to 80 hours. According to the present invention, the time period required for carrying out the process is shortened, therebvy improving the economic feature of the process. |
