Preparation of Nb3Al superconductor by powder metallurgy and effect of mechanical alloying on the phase formation
Preparation of Nb3Al superconductor by powder metallurgy and effect of mechanical alloying on the phase formation
复制标题
粉末冶金Nb3Al超导体的制备及机械合金化对相形成的影响
DOI：
10.1007/s40534-014-0036-0
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发表时间：
2014-02
期刊：
影响因子：
--
通讯作者：
Guo Yan
中科院分区：
文献类型：
--
作者：
Zhao Liu;Yongliang Chen;Lupeng Du;Pingyuan Li;Yajing Cui;Xifeng Pan;Guo Yan
采用粉管法制备超导线材可实现粉末冶金Nb 3Al的大规模应用。采用粉末冶金法在不同的热处理条件下合成Nb 3Al，退火温度为700 ~ 1000 °C，加热时间为10 ~ 50 h。X射线衍射分析表明，Nb与Al发生了反应，生成了NbAl 3相。在当前的热处理条件下（退火温度从700 °C变化到1,000 °C，加热时间从10小时变化到50小时），NbAl 3是如此稳定，以至于它不与未反应的Nb进一步反应，并且对热处理条件不敏感。通过机械合金化，采用高能球磨显著减小了颗粒尺寸，提高了表面自由能，促进了Nb 3Al相的形成。X射线衍射分析表明，在相同的热处理条件下，获得了相对纯净的Nb 3Al相。能量色散X射线分析表明，所获得的样品接近A15结构Nb 3Al的正确化学计量比。
Adoption of powder-in-tube method to fabricate superconducting wire can realize a large application of Nb3Al prepared by powder metallurgy. Powder metallurgy was used to synthesize Nb3Al under various heat-treatment conditions, annealing temperature was varied from 700 to 1,000 °C and heating time was varied from 10 to 50 h. X-ray diffraction patterns reveal that a reaction between Nb and Al took place and formed NbAl3phase. Under current heat-treatment conditions (annealing temperature was varied from 700 to 1,000 °C and heating time was varied from 10 to 50 h), NbAl3was so stable that it did not further react with the unreacted Nb and was not sensitive to the heat-treatment condition. By mechanical alloying, adoption of high-energy ball milling significantly decreases particle size and enhances surface free energy, which promotes the formation of Nb3Al phase. X-ray diffraction patterns indicate that relatively pure Nb3Al phase was obtained under the same heat-treatment condition. Energy-dispersive X-ray analysis measurement demonstrates that the obtained samples were close to the right stoichiometry of A15 structure Nb3Al.
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影响因子：
3.6
作者：
B. Seeber;A. Ferreira;V. Abächerli;R. Flükiger
通讯作者：
B. Seeber;A. Ferreira;V. Abächerli;R. Flükiger
影响因子：
3.1
作者：
K. Okuno;A. Shikov;N. Koizumi
通讯作者：
K. Okuno;A. Shikov;N. Koizumi
影响因子：
3.6
作者：
T. Fukuzaki;T. Takeuchi;N. Banno;K. Tagawa;N. Tatsumi;H. Ogiwara;H. Wada
通讯作者：
T. Fukuzaki;T. Takeuchi;N. Banno;K. Tagawa;N. Tatsumi;H. Ogiwara;H. Wada
影响因子：
2.1
作者：
T. Ando;M. Sugimoto;N. Koizumi;Y. Nunoya;K. Matsui;M. Nishi;H. Tsuji;S. Shimamoto
通讯作者：
T. Ando;M. Sugimoto;N. Koizumi;Y. Nunoya;K. Matsui;M. Nishi;H. Tsuji;S. Shimamoto
DOI：
10.4028/www.scientific.net/msf.269-272.1043
发表时间：
1998-01
期刊：
Materials Science Forum
影响因子：
--
作者：
A. Całka;D. Wexler;J. Zhou;M. Sumption;E. Collings
通讯作者：
A. Całka;D. Wexler;J. Zhou;M. Sumption;E. Collings