| YBa_2Cu_3O_7超导材料的退化机制和保护方法的研究 |
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| 引用本文： | 薛士平,马葭生,顾元吉,俞永勤,袁义善,周重斌.YBa_2Cu_3O_7超导材料的退化机制和保护方法的研究[J].上海师范大学学报(自然科学版),1989(2). |
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| 作者姓名： | 薛士平 马葭生 顾元吉 俞永勤 袁义善 周重斌 |
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| 作者单位： | 华东师范大学物理系，华东师范大学物理系，华东师范大学物理系，华东师范大学物理系，华东师范大学地理系，华东师范大学物理系 |
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| 基金项目： | 上海市科学技术发展基金 |
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| 摘 要： | 本文报导了使用交流磁化率、XED、NQR、NMR等实验手段通过加速反应研究YBa_2Cu_3Or超导相在水中的退化机制问题。研究表明,水对超导相有很强的腐蚀作用,使之分解为CuO、Ba(OH)_2和Y-Ba化合物,Ba(OH)_2又进一步和大气中的CO_2反应生成BaCO_3o.DW-3胶涂层和金属管帽封装能有效地保护超导样品防止水或大气中水汽的侵蚀。
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| 关 键 词： | 超导体 交流磁化率 XBD NQR NMB 保护涂层 |
Study on Degeneration Mechanism and Protected Method of YBa_2Cu_3O_7 Material |
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| XUE SHIPING MA JIASHENG GU YUANJI YU YONGQIN YUAN YISHAN ZHOU ZHONGBIN.Study on Degeneration Mechanism and Protected Method of YBa_2Cu_3O_7 Material[J].Journal of Shanghai Normal University(Natural Sciences),1989(2). |
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| Authors: | XUE SHIPING MA JIASHENG GU YUANJI YU YONGQIN YUAN YISHAN ZHOU ZHONGBIN |
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| Abstract: | The degeneration mechanism of YBa_2Cu_3O_7 in water has been investigated with the method of aocelerated reacts using ao suseeptibility, XRD, NQR, and NMR. The results show that waters have strong corrosive effect to superconducting sample, YBa_2Cu_3O_7 phase decomposes CuO, Ba(OH)_2 and Y-Ba compound in water, and Ba(OH)_2 further reacts with CO_2 in atmosphere to form BaCO_3.DW-3 viscos coating and metal enoapsulant can probect the sample to prevent deterioration from water and atmospheric moisture. |
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| Keywords: | superconductor ac susceptibility XRD NQR NMR coa ting |
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