Strain Effect on Critical Current of Practical Superconductivity Wires under High Magnetic Field

高磁场下实用超导线材临界电流的应变效应

• 批准号: 21360312
• 负责人: OSAMURA Kozo
• 金额: $ 11.4万
• 依托单位: 公益財団法人応用科学研究所 (2011)Institute of Brain and Blood Vessels (2010)Research Institute for Applied Sciences (2009)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21360312/
• 关键词: 超伝導; 高温超伝導; 機械・電磁気特性; 臨界電流; ヤング率; 耐力; 不可逆歪; 中性子回折; 残留歪; 高温超電導

In order to industrialize fully the superconductivity technology, it is indispensable to solve the stress/strain problems for improving the critical current and strengthening the practical superconducting wires. It has been succeeded to measure directly the thermal strain as well as lattice strain exerted on superconducting components of Nb_3Sn, BSCCO and YBCO wires by means of quantum beam techniques. On the basis of knowledge of local strains, it becomes possible to investigate the strain dependence and scaling rule of critical currents with respect to magnetic field, deviatoric strain, grain boundary weak link and micro-twin. Further the calculation methods have been proposed for the local strain and the strength of the practical composite superconducting wires.

为了使超导技术充分产业化，必须解决应力/应变问题，提高临界电流，加强实用超导导线的性能。利用量子束技术，成功地直接测量了Nb_3Sn、BSCCO和YBCO导线超导元件的热应变和晶格应变。在了解局部应变的基础上，研究临界电流对磁场、偏应变、晶界弱环节和微孪晶的应变依赖关系和标度规律成为可能。进一步提出了实际复合超导导线的局部应变和强度的计算方法。

项目成果

Change in Local and Overall V-I Curves with Applied Tensile Strain in DyBCO Coated Conductor

DyBCO 涂层导体中局部和整体 V-I 曲线随施加拉伸应变的变化

• DOI: 10.1016/j.physc.2011.05.121
• 发表时间: 2011
• 期刊: Physica C : Superconductivity and its Applications
• 作者: A.Toda;T.Arai;Y.Shimokawa;S.Nagano;S.Ochiai;H.Okuda;M.Sugano;K.Osamura;W.Prusseit
• 通讯作者: W.Prusseit

The direct evalution of the internal strain of biaxially textured YBCO film in a coated conductor using synchrotron radiation

使用同步辐射直接评估涂层导体中双轴织构 YBCO 薄膜的内应变

• 发表时间: 2009
• 期刊: Supercond.Sci.Technol. 22
• 作者: Sugano M;Machiya S;Osamura K;Adachi H;Sato M;Semerad R;Prusseit W
• 通讯作者: Prusseit W

Reversible strain limit of critical currents and universality of intrinsic strain effect for REBCO-coated conductors

• DOI: 10.1088/0953-2048/22/2/025015
• 发表时间: 2009-02
• 期刊: Superconductor Science and Technology
• 影响因子: 3.6
• 作者: K. Osamura;M. Sugano;K. Nakao;Y. Shiohara;A. Ibi;Y. Yamada;N. Nakashima;S. Nagaya;T. Saitoh;Y. Iijima;Y. Aoki;T. Hasegawa;T. Kato

Internal Strain Behavior Exerted on YBCO Layer in the YBCO Coated Conductor

YBCO 涂层导体中 YBCO 层的内应变行为

• DOI: 10.1109/tasc.2010.2086038
• 发表时间: 2011
• 期刊: IEEE Transaction on Applied Superconductivity
• 作者: K Osamura;S Machiya;Y Tsuchiya;S Harjo;H Suzuki;T Shobu;K Kiriyama;and M Sugano
• 通讯作者: and M Sugano

Internal Residual Strain Measurements by Means of Neutron Diffraction and Correlation with Critical Current Maximum of Surround Cu Stabilized YBCO Coated Conductors

通过中子衍射测量内部残余应变并与周围铜稳定 YBCO 涂层导体的临界电流最大值相关

• 发表时间: 2009
• 作者: K Osamura;S Machiya;Y Tsuchiya;H Suzuki
• 通讯作者: H Suzuki