| 摘要 |
PURPOSE:To increase critical current density and to improve mechanical strength and durability by heating a quenched block obtd. by quenching molten starting materials and by hot working the heated block in a liq.-crystal mixed phase state. CONSTITUTION:Starting materials such as Y2O3, BaCO3 and CuO are mixed, calcined in an oxygen atmosphere, pulverized, melted by heating at 1,350-1,450 deg.C for 3-10min and quenched to obtain a quenched block. This block is heated at 1,050-1,150 deg.C and hot worked in a liq.-crystal mixed phase state at 970-1,000 deg.C. |
