Effects of Sintering on the Microstructure and Critical Current Density of Ag-sheathed BiPbSrCaCuO Superconducting Tapes

Abstract

Abstract: The effects of sintering on the microstructure and the critical current density of Ag-sheathed BiPbSrCaCuO (2223) superconducting tapes prepared by the powder-in-tube technique were in- vestigated. The microstructure of oxide layer and the J_C at 77 K were strongly dependent on the sintering condition. The optimum sintering temperature, time and cooling rate to maximize J_C values were in the range about 840-850℃, 100-200 h and 50-100℃/h, respectively.

Key words: BiPbSrCaCuO, superconductor, sintering, sheath

Junhua LIU+, Dept. of Manufacturing Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, ChinaZutang WANG, Dept. of Mechanical Engineering, Tsinghua University, Beijing, 100084, China. Effects of Sintering on the Microstructure and Critical Current Density of Ag-sheathed BiPbSrCaCuO Superconducting Tapes[J]. J Mater Sci Technol, 1993, 9(2): 153-155.

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Effects of Sintering on the Microstructure and Critical Current Density of Ag-sheathed BiPbSrCaCuO Superconducting Tapes

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