| Microstructure and properties of Bi-2223/Ag/Ni tapes |
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| 基金项目： | financially supported by the National High Technology Research and Development Program(863program)(No.2009AA03Z202); the Fundamental Research Funds for the Central Universities(No.N100423006and No.N110823001) |
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| 摘 要： | To reduce the production cost of Bi-2223 superconducting tapes, Bi-2223/Ag/Ni tapes were fabricated by the powder-in-tube process. The effect of heat treatment on the microstructure and critical current of the Bi-2223/Ag/Ni tapes were studied. The phase compositions of the samples were characterized using XRD. The microstructure was observed using SEM. Experimental results indicate that higher temperature is more conducive to the formation of Bi-2223 phase at an atmosphere of 8.5% O 2 . After the two-step heat treatment, the critical current of samples is about 67.5 A.
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| 关 键 词： | Bi-2223/Ag/Ni tapes heat treatment microstructure critical current |
Microstructure and properties of Bi-2223/Ag/Ni tapes |
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| Authors: | Mingya Li Chengli Ye Jun Liu |
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| Affiliation: | 1. School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China
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| Abstract: | To reduce the production cost of Bi-2223 superconducting tapes, Bi-2223/Ag/Ni tapes were fabricated by the powder-in-tube process. The effect of heat treatment on the microstructure and critical current of the Bi-2223/Ag/Ni tapes were studied. The phase compositions of the samples were characterized using XRD. The microstructure was observed using SEM. Experimental results indicate that higher temperature is more conducive to the formation of Bi-2223 phase at an atmosphere of 8.5% O2. After the two-step heat treatment, the critical current of samples is about 67.5 A. |
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