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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 8    No. 1    March 1998

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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

ISSN 1672-7029
CN 43-1423/U

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