采用低碳钢作为外包套材料,通过原位法粉末装管工艺(in-situ PIT)制备出高密度Ti、Zr掺杂的MgB2/Fe/Cu线材.将线材短样在氩气保护条件下,于650~800 ℃烧结2-5 h.MgB2线材的微结构分析显示,通过该工艺制备的MgB2/Fe/Cu线材比MgB2块材具有更好的晶粒连结性和更高的致密度.采用标准的四引线法,在4.2 K,0~8 T的磁场下测试线材的临界电流密度.测试结果显示,800 ℃烧结的Mg0.9Zr0.1B2/Fe/Cu线材获得了最高的临界电流密度.
参考文献
[1] | Nagamatsu,J;Nakagawa,N;Muranaka,T;Zenitani,Y;Akimitsu,J .Superconductivity at 39 K in magnesium diboride.[J].Nature,2001(6824610):63-64. |
[2] | Liao X Z;Serquis A;Zhu Y T et al.[J].Applied Physics Letters,2002,80:4398. |
[3] | Serquis;Liao X Z;Zhu Y T et al.[J].Journal of Applied Physics,2002,92:351. |
[4] | Martinez E;Angurel L A;Navarro R .[J].Science Technology,2002,15:1043. |
[5] | Grasso G;Malagoli A;Ferdeghini C et al.[J].Applied Physics Letters,2002,79:230. |
[6] | Pachla W;Presz A;Diduszko R P et al.[J].Superconductor Science and Technology,2002,15:1281. |
[7] | Alexey V Pan;Sihai Zhou;Huakun Lin .Properties of superconducting MgB_2 wires: in situ versus ex situ reaction technique[J].Superconductor Science & Technology,2003(5):639-644. |
[8] | Kovac P;Husek I;Pachita W et al.[J].Superconductor Science and Technology,2002,15:1127. |
[9] | Glowacki B A;Majoros M;Vickers M et al.[J].Superconductor Science and Technology,2001,14:193. |
[10] | Dou SX.;Pan AV.;Zhou S.;Ionescu M.;Liu HK.;Munroe PR. .Substitution-induced pinning in MgB2 superconductor doped with SiC nano-particles[J].Superconductor Science & Technology,2002(11):1587-1591. |
[11] | Zhao Y;Feng Y;Cheng C H et al.[J].Applied Physics Letters,2001,79:1154. |
[12] | Xu HL;Feng Y;Xu Z;Li CS;Yan G;Wu YF;Chen ZL;Mossang E;Sulpice A .Effects of ZrH2 doping and sintering temperature on the critical current density of MgB2 wires[J].Physica, C. Superconductivity and its applications,2005(2):1244-1248. |
[13] | Horhager N;Eisterer M;Weber H W et al.[J].Journal of Physics:Condensed Matter,2006,43:500. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%