Microstructure and properties of Bi-2223/Ag/Ni tapes
来源期刊：Rare Metals2012年第6期
论文作者：LI Mingya, YE Chengli, and LIU Jun School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao , China
文章页码：556 - 559
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.
LI Mingya, YE Chengli, and LIU Jun School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
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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