Qizhou YAO Yongzhong WANG Ming JIANG Jianguo HUANG Cheng ZHANG Guiwen QIAO Institute of Metal Research
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Academia Sinica
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Shenyang
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110015
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China
材料科学技术（英文）
A promising method —“powder in tube”technique was used to fabricate Ag-sheathed Bi-2223 superconductive tapes with high critical current density.After a combination processing of pressing and subsequent heat treatment,we obtained tapes with high degree of texture,good compaction and uniform properties.At 77 K in zero field,J_C was higher than 1×10~4 A/cm~2 while the highest J_C was 1.69×10~4 A/cm~2.SEM and XRD was used to detect the tapes texture,and the relationship be- tween J_C and the degree of texture is discussed.In addition,the reason for obstacling the improvement of J_C is also investigated.
关键词:
high-T_C superconductors
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