采用热力学计算法、扩散偶法以及差示扫描量热法(DSC)对Mg-B体系成相行为进行了研究.热力学计算显示,Mg-B体系固-固反应在298 K～923 K温度范围内均可以发生.扩散研究显示,Mg-B之间的固态反应是通过Mg向B扩散实现的.DSC研究表明,Mg-B体系在升温过程中,分别在527.12℃,650.73℃和660.82℃,先后发生了固-固反应,Mg熔化以及液-固反应.在综合考虑扩散研究、热力学研究结果的基础上,提出了Mg-B体系反应模型.
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] | John M Rowell .[J].Superconductor Science and Technology,2003,16:17. |
| [3] | Michio Naito;Kenji Ueda .[J].Superconductor Science and Technology,2004,17(01) |
| [4] | Giunchi G.;Raineri S.;Wesche R.;Bruzzone PL. .The voltage-current relations for MgB2 obtained by reactive liquid infiltration[J].Physica, C. Superconductivity and its applications,2004(1/4):310-315. |
| [5] | Giunchi G;Ceresara S;Ripamonti G et al.[J].IEEE Trans of Appl Superconductivity,2003,13:3060. |
| [6] | Giunchi G;Ceresara S;Ripamonti G et al.[J].Superconductor Science and Technology,2003,16:285. |
| [7] | Shinya Ueda;Jun-ichi Shimoyama;Isao Iwayama et al.[J].Applied Physics Letters,2005,86(01) |
| [8] | Liu Z K;Schlom D G;Li Q et al.[J].Applied Physics Letters,2001,78:3678. |
| [9] | Cook L P;Klein R;Wong N W et al.[J].IEEE Trans of Appl Superconductivity,2005,15:3227. |
| [10] | Chase J M W .[J].JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA,1952,9:1998. |
| [11] | Kubaschewski O;Alcock C B.Metallurgical Thermoche-mistry[M].OXFORD:PERGAMON PRESS,1979 |
| [12] | Akiyasu Yamamoto;Jun-ichi Shimoyama;Shinya Ueda .Improved critical current properties observed in MgB_2 bulks synthesized by low-temperature solid-state reaction[J].Superconductor Science & Technology,2005(1):116-121. |
| [13] | Rogado N;Hayward M A;Regan K A et al.[J].Journal of Appled Physics,2002,91:274. |
| [14] | Feng QR.;Chen X.;Wang YH.;Wang X.;Xiong GC.;Gao ZX. .In situ resistance measurement of superconducting MgB2 in flowing argon atmosphere[J].Physica, C. Superconductivity and its applications,2003(0):653-656. |
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