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中文摘要：
利用原位粉末套管法制备出石墨掺杂的MgB2-xCx／Fe（x=0．00，0．05，0．10）超导线材，采用两种工艺制度对线材进行了最终热处理．结果显示，石墨掺杂可以有效地提高MgB2线材的临界电流密度（Jc）和磁通钉扎力（Fp）．常规热处理线材的Jc（B）和Fp（B）性能均优于快速热处理的，其主要原因是不同热处理制度导致的显微结构差异．
英文摘要：
Graphite doped MgB2-xCx/Fe （x=0.00, 0.05, 0.10） wires were fabricated through the in situ powder-in-tube method. The final heat treatment of these MgB2 wires were performed by using two different kinds of ways. It is found that the critical current density （Jc） and the flux pinning force （Fp） of MgB2 wire were enhanced effectively by graphite doping. The Jc （B） and Fp （B） properties of the conventional sintering wires are superior to those of the rapid sintering wires. The microstructure of these MgB2 wires, which is caused by the final heat treatment laws, is responsible for the difference in their superconductivity.
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Superconducting properties and microstructure in MgB2 bulks , wires and tapes, Recent Progress in Hi
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