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Vol.44, No.3, 169 ~ 175, 2006
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| Title |
| Preparation of {113}<121> Textured Ag Substrate for T1-1223 High-Tc Superconductor Coating |
| 김수영 Su Young Kim , 정대영 Dae Young Jeong , 시게오호리우찌 S. Horiuchi , 정우창 Uoo Chang Chung , 조경목 Kyung Mox Cho , 박익민 Ik Min Park |
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| Abstract |
| Ag substrate with {113}<121> texture was to be developed for Tl-1223 high temperature superconductor (HTS) in this study. Since Ag would not react chemically with Tl-1223 HTS, the buffer layers, generally used between HTS and substrate, are not needed. However, the texture control of Ag is not easy task due to the low stacking fault energy. Previous study revealed that Tl-1223 {00l} almost parallels Ag {113} crystallographically. To obtain {113}<121> texture of Ag, a mechanical and thermal treatment method was used after 97% cold rolling and 300℃ heat-treatment. Ag {113}<121> texture formed tends to be disappeared as the abnormal grain growth and secondary recrystallization occur by heating at 850℃, Tl-1223 crystallization temperature. It was found that plastic deformation of 0.5% and 850℃ heat-treatment was an effective way to avoid secondary recrystallization and to keep {113}<121> texture of Ag substrate. |
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| Key Words |
| Ag substrate, Rolling, Mechanical-thermal treatment, {113}<121> texture, Secondary recrystallization, ODF, orientation distribution function, T1-1223 HTS, high temperature superconductor |
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