| 摘要 |
PURPOSE:To ensure superior fillability, to obtain a high density molded body and to increase the critical current density of an oxide superconductor by classifying powdery starting material for a BSCCO superconductor into three kinds of powders having different prescribed particle sizes, mixing the powders in a prescribed ratio and press-molding this mixture. CONSTITUTION:Powdery starting material for a Bi-Sr-Ca-Cu oxide (BSCCO) superconducting material is classified into first powder having 10-12mum particle size, second powder having 4-5mum particle size and third powder having <=1mum particle size. The powders are mixed in (25-30):(6-8):1 weight ratio of first powder:second powder:third powder and this mixture is press-molded. |
