尺寸对Cu-Nb微观复合材料磁滞特性的影响

低温物理学报 , 2014, 36(2): 140-143.

尺寸对Cu-Nb微观复合材料磁滞特性的影响

徐晓燕 ^1, , 梁明 ^2, , 卢亚锋 ^3, , 王鹏飞 ^4, , 焦高峰 ^5, , 李成山 ^6,

1.西北有色金属研究院超导材料研究所,西安710016

2.西北有色金属研究院超导材料研究所,西安710016

3.西北有色金属研究院超导材料研究所,西安710016

4.西北有色金属研究院超导材料研究所,西安710016

5.西北有色金属研究院超导材料研究所,西安710016

6.西北有色金属研究院超导材料研究所,西安710016

基金项目: 国家自然科学基金(批准号:51031002)资助的课题.Project supported by the National Natural Science Foundation of China(Grant 51031002)

关键词： Cu-Nb微观复合材料 , 磁滞特性 , 临界效应

SIZE EFFECTS ON THE MAGNETIC PROPERTIES OF Cu-Nb MICROCOMPOSITES

Xiaoyan XU ^1, , Ming LIANG ^2, , Yafeng LU ^3, , Pengfei WANG ^4, , Gaofeng JIAO ^5, , Chengshan LI ^6,

1.西北有色金属研究院超导材料研究所,西安710016

2.西北有色金属研究院超导材料研究所,西安710016

3.西北有色金属研究院超导材料研究所,西安710016

4.西北有色金属研究院超导材料研究所,西安710016

5.西北有色金属研究院超导材料研究所,西安710016

6.西北有色金属研究院超导材料研究所,西安710016

Keywords： Cu-Nb microcomposites , Magnetic property , Proximity effect

本文研究了Cu-Nb多芯复合线微观结构对磁滞特性的影响.样品通过不同塑性应变和热处理获得不同显微结构.结果表明,经冷加工变形和800℃/1.5h退火,尺寸为φ1,06mm样品的磁化曲线中只在高场下出现了一个峰,这个峰来源于Nb的体钉扎.φ2.04mm样品在退火后的曲线中出现了三峰结构,低场下的两个峰是由于临界效应使Cu基体中产生了超导电性引起的,而高场下出现的第三个峰也与Nb的体钉扎有关.样品中Nb芯丝直径及芯丝间距等因素影响了复合材料直流磁化曲线的特征.

参考文献

[1]	G. SHARMA;R. V. RAMANUJAN;G. P. TIWARI .INSTABILITY MECHANISMS IN LAMELLAR MICROSTRUCTURES[J].Acta materialia,2000(4):875-889.
[2]	R. J. Klassen;K. T. Conlon;J. T. Wood .Thermal relaxation of internal strain in two-phase Cu-Nb wire[J].Scripta materialia,2003(4):385-389.
[3]	H.R.Z. Sandim;M.J.R. Sandim;H.H. Bernardi .Annealing effects on the microstructure and texture of a multifilamentary Cu-Nb composite wire[J].Scripta materialia,2004(11):1099-1104.
[4]	S. I. Hong .MECHANICAL PROPERTIES OF Cu-Nb MICROCOMPOSITES FABRICATED BY THE BUNDLING AND DRAWING PROCESS[J].Scripta materialia,2000(8):737-742.
[5]	Botcharova E;Freudenberger J;Schultz L .Mechanical and electrical properties of mechanically alloyed nanocrystalline Cu-Nb alloys[J].Acta materialia,2006(12):3333-3341.
[6]	M J R Sandim;H R Z Sandim;H H Bernardi .Annealing effects on the microstructure, electrical, and magnetic properties of jelly-rolled Cu-Nb composite wires[J].Superconductor Science & Technology,2005(1):35-40.
[7]	S.I. Hong;M.A. Hill .MICROSTRUCTURE AND CONDUCTIVITY OF Cu-Nb MICROCOMPOSITES FABRICATED BY THE BUNDLING AND DRAWING PROCESS[J].Scripta materialia,2001(10):2509-2515.
[8]	Maria J. R. Sandim;Carlos Y. Shigue;Luis G. Ribeiro;Marcello Filgueira;Hugo R. Z. Sandim .Annealing effects on the electrical and superconducting properties of a Cu-15vol%Nb composite conductor[J].IEEE Transactions on Applied Superconductivity: A Publication of the IEEE Superconductivity Committee,2002(1):1195-1198.
[9]	Stamopoulos D;Pissas M;Sandim MJR;Sandim HRZ .Proximity induced superconductivity in bulk Cu-Nb composites: The influence of interface's structural quality[J].Physica, C. Superconductivity and its applications,2006(1):45-54.
[10]	M J R Sandim;H R Z Sandim;D Stamopoulos .The evolution of Nb recrystallization in a Cu matrix: morphology of Nb and modulation of its critical fields in a wire configuration[J].Superconductor Science & Technology,2005(9):1151-1158.
[11]	M J R Sandim;H R Z Sandim;C Y Shigue .Annealing effects on the magnetic properties of a multifilamentary Cu-Nb composite[J].Superconductor Science & Technology,2003(3):307-313.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网