Equiaxial nano-crystals Nb3Al superconductor prepared by optimized mechanically alloying
Equiaxial nano-crystals Nb3Al superconductor prepared by optimized mechanically alloying
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优化机械合金化制备等轴纳米晶Nb3Al超导体
DOI：
10.1007/s10853-018-2918-8
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发表时间：
2018-12
影响因子：
4.5
通讯作者：
Yong Zhang
中科院分区：
文献类型：
--
作者：
Wenjie Zhang;Pingyuan Li;Xiaofeng Zou;Zhou Yu;Xinsheng Yang;Xifeng Pan;Yong Zhao;Yong Zhang
The influence of the original nominal chemical composition, milling time, sintering temperature and holding time was studied systematically on the phase formation, microstructure and superconductivity of mechanically alloyed Nb3Al. By optimizing the process, we have successfully prepared high-performance Nb3Al superconductor. Samples with original nominal composition of Nb-27 at.%Al were milled for 3 h and sintered at 900 °C for 1 h, resulting in an entire A15 superconducting phase, except a few negligible Nb2Al phase. The superconducting critical transition temperature (Tc) and the upper critical field at absolute zero (Hc2(0)) reached 15.7 K and 28.1 T, respectively. It should be noted that the superconducting critical current density (Jc) was still as high as 6.3 × 104A cm−2at a temperature of 4.2 K under an applied magnetic field of 7 T, as well as a maximum flux pinning force (Fp,max) of 6.23 × 109N m−3in the whole magnetic field range at 4.2 K. All of the results could be attributed to the microstructure of the sample with equiaxial nano-crystals.
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DOI：
10.1007/s40534-014-0036-0
发表时间：
2014-02
期刊：
J. Mod. Transport.
影响因子：
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作者：
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焦耳加热电流对 Nb3Al 相形成和超导性能的影响，用于核聚变磁体能源
影响因子：
6.2
作者：
Li Pingyuan;Zhang Wenjie;Lin Wenjia;Wang Gang;Pan Xifeng;Yu Zhou;Yang Xinsheng;Sun Bai;Yan Guo;Zhang Yong;Cheng C. H.;Feng Yong;Zhao Yong
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影响因子：
3.6
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通讯作者：
K. Osamura;S. Machiya;Y. Tsuchiya;H. Suzuki;T. Shobu;M. Sato;S. Harjo;K. Miyashita;Y. Wadayama;Shojiro Ochiai;A. Nishimura
影响因子：
3.2
作者：
J. Kwo;R. Hammond;T. Geballe
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J. Kwo;R. Hammond;T. Geballe