中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 8 No. 1 March 1998 |
HOT PRESSING AND ITS DEFORMATION MECHANISM OF Ag-SHEATHED DPSCCO SUPERCONDUCTING TAPES
Ma Yanwei, Wang Xianjin and Wang Zutang*
（Department of Metal Forming,University of Science and Technology Beijing, Beijing100083, P. R. China;
* Tsinghua University, Beijing100084, P. R. China）
Abstract:Experiments of hot pressing of the tapes were carried out. Parameters of pressure, temperature and time were determined. Deformation mechanism of hot pressing were also studied. Experimental results showed that hot pressing caused the core to become more dense and could avert the formation of cracks effectively. At 77 K and zero field, the maximumJcvalue was up to 2.25×104A/cm2 under the conditions of 750℃, 200 MPa and 30 min.
Key words: Ag-sheathed superconducting tapes hot pressing deformation mechanism critical current density
