采用Ag箔在两种不同的工艺条件下对YBCO高温超导块材进行了钎焊连接,钎焊完成后,分别对原始超导块材和钎焊接头进行磁悬浮力测量和俘获磁场测试、以评价钎焊质量.磁悬浮力的测试结果表明,在两种工艺条件下,钎焊接头的磁悬浮力分别可达原始块材的69.88%和79.37%.俘获场测试结果表明,单畴原始母材的俘获场为单峰,钎焊接头的俘获场为双峰;同时,钎缝区域的俘获磁场强度较低,没有完全恢复接头母材的超导环流,而限制了钎焊接头超导性能的提高.
The joining of high-temperature superconductor YBCO bulks was performed with Ag foils at two kinds of brazing parameters. The levitation force of the superconducting original bulks and the brazed joints after oxygena-tion was measured to evaluate the superconducting properties, the results demonstrate that the levitation force of the joints could reach up to 69. 88% and 79. 37% of the original YBCO bulks ,respectively. The trapped field distributions on the surface of YBCO original bulks and the brazed joints were measured by a Hall probe automated scanning system. and exhibits a cone profile for the original bulk, whereas two peaks for the joint and the assembly parts of original bulks. However, the transitional zone in the trapped field distribution profile of the joint is narrow than that of the assembly, and the magnetic density is higher.
参考文献
| [1] | 王璐琳,荆华,刘璐,王家素.三种永磁轨道上YBCO的高温超导磁悬浮性能[J].低温与超导,2007(04):300-303. |
| [2] | 侯炳林,朱学武.高温超导储能应甩研究的新进展[J].低温与超导,2005(03):46-50,54. |
| [3] | Fang J.R.;Lin L.Z.;Yan L.G.;Xiao L.Y. .A new flywheel energy storage system using hybrid superconductingmagnetic bearings[J].IEEE Transactions on Applied Superconductivity: A Publication of the IEEE Superconductivity Committee,2001(1):1657-1660. |
| [4] | 任洪涛,肖玲,焦玉磊,郑明辉.大畴YBCO超导块[J].低温与超导,2000(03):28-33. |
| [5] | 徐克西,邱静和,吴兴达,周克然,泮彭军.直径53 mm熔融织构单畴YBCO块材制备研究[J].低温物理学报,2007(04):275-279. |
| [6] | 郭和平,方洪渊,钱乙余,范富华,胡安明.MTG-YBCO高温超导材料的扩散连接研究[J].稀有金属,1998(01):43-46. |
| [7] | Noudem JG.;Reddy ES.;Goodilin EA.;Tarka M.;Noe M.;Schmitz GJ. .Microstructure and transport properties of melt-textured joint of YBCO[J].Physica, C. Superconductivity and its applications,2002(Pt.2):1187-1190. |
| [8] | Noudem JG.;Tarka M.;Noe M.;Schmitz GJ.;Reddy ES. .Melt-texture joining of YBa2Cu3Oy bulks[J].Superconductor Science & Technology,2001(6):363-370. |
| [9] | Delamare MP.;Bringmann B.;Leenders A.;Freyhardt HC.;Walter H. .Characterization of natural and artificial low-angle boundaries in YBCO TSMG samples[J].Physica, C. Superconductivity and its applications,2000(3):160-177. |
| [10] | Iida K.;Yoshioka J.;Sakai N.;Murakami M. .Welding of different Y-Ba-Cu-O blocks[J].Physica, C. Superconductivity and its applications,2003(Pt.1):437-440. |
| [11] | Prikhna TA.;Gawalek W.;Surzhenko AB.;Moshchil VE.;Sergienko NV. Sverdun VB.;Litzkendorf D.;Muller R.;Dub SN.;Koval AY.;Alexandrova LI.;Kordyuk AA.;Melnikov VS. .Superconducting joining of melt-textured YBCO[J].Physica, C. Superconductivity and its applications,2002(Pt.3):1528-1530. |
| [12] | Harnois C.;Chaud X.;Laffez I.;Desgardin G. .Joining of YBCO textured domains: a comparison between the multi-seeding and the welding techniques[J].Physica, C. Superconductivity and its applications,2002(Pt.2):1103-1106. |
| [13] | 陈云霞,肖玲,任洪涛,焦玉磊,郑明辉.工艺参数对TSMTG法制备单畴YBCO样品的影响[J].中国稀土学报,2003(05):526-529. |
| [14] | 肖玲,任洪涛,焦玉磊,郑明辉,李山林,景秀年,吕力.YBCO单畴超导块的俘获场[J].低温物理学报,1999(05):342. |
| [15] | 焦玉磊,肖玲,任洪涛,郑明辉,陈云霞,温华明.熔融织构单畴YBCO超导块的俘获场及磁浮特性[J].低温物理学报,2002(01):62-66. |
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