• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Metallurgical and Materials Transactions, E. Materials for Energy Systems >Influence of Both Cooling Rate and TeO_2 Addition on the Properties of YBCO Superconductor
【24h】

Influence of Both Cooling Rate and TeO_2 Addition on the Properties of YBCO Superconductor

机译：冷却速度和TeO_2添加量对YBCO超导体性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Composite of superconducting system YBCO-TeO_2 was synthesized utilizing solid-state reaction technique. Different weight percentages of TeO_2 were mixed with a basic mixture [YBCO] for the synthesis of [YBa_2Cu_3O_(7-y)]_(1-x)(TeO_2)_x composites. These mixtures were sintered at 1213 K (940 °C) for 24 hours and the samples cooled down by two different ways. The first way carried out via slowly cooling in furnace with the rate of 274 K/min to 275 K/min (1 °C/min to 2 °C/min) and the second one is quenching in oxygen gas. The XRD analysis showed that YBCO orthorhombic phase is the major phase appeared in all samples with different TeO_2 content regardless of the cooling way. Additionally, minor unknown secondary phases appeared and enlarged with increasing TeO_2 addition. Although quenched samples showed a phase difference between the sample's outer surface (orthorhombic) and its interior (tetragonal), the slowly cooled one did not clearly show such distinction. Moreover, doping YBCO with TeO_2 leads to increase in the sample bulk density and reduction in their degradation degree in the wet atmosphere.
机译：利用固态反应技术合成了超导体系YBCO-TeO_2的复合材料。将不同重量百分比的TeO_2与碱性混合物[YBCO]混合，以合成[YBa_2Cu_3O_（7-y）] _（1-x）（TeO_2）_x复合材料。将这些混合物在1213 K（940°C）下烧结24小时，然后通过两种不同的方法冷却样品。第一种方法是通过在炉中以274 K / min至275 K / min（1°C / min至2°C / min）的速率缓慢冷却进行，第二种方法是在氧气中淬火。 XRD分析表明，不管冷却方式如何，在所有TeO_2含量不同的样品中，YBCO正交相都是主要相。此外，随着TeO_2添加量的增加，次要的未知次生相出现并扩大。尽管淬火后的样品在样品的外表面（斜方）与内部（四边形）之间显示出相差，但缓慢冷却的样品并没有清楚地显示出这种区别。此外，用TeO_2掺杂YBCO会导致样品体积密度增加，并降低其在潮湿气氛中的降解程度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号