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首页> 外文期刊>Physica, C. Superconductivity and its applications >Effect of sintering temperature on properties of MgB2 wire sheathed by low carbon steel tube
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Effect of sintering temperature on properties of MgB2 wire sheathed by low carbon steel tube

机译：烧结温度对低碳钢管护套MgB2丝性能的影响

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摘要

MgB2 wire was fabricated through the in situ powder-in-tube method in flowing argon by using low carbon steel (LCS) tube as sheath material. Effects of sintering temperature on the phase composition, microstructure features and critical current density (J(c)) are investigated by using X-ray diffractometer, scanning electron microscopy with an energy dispersive spectrometer and the standard DC four-probe technique. The result indicates that the highest J(c) values have been achieved in the sample sintered at 700 degrees C, while J(c) decreases with increasing sintering temperature. It is found that microstructure features in all samples, e.g. the thickness of interface layer, the phase composition and the size of MgB2 grain are responsible for the difference of J(c) values. (c) 2005 Elsevier B.V. All rights reserved.
机译：以低碳钢（LCS）管为护套材料，在流动氩气中，通过原位管内粉末法制备了MgB2线。通过使用X射线衍射仪，带能量色散谱仪的扫描电子显微镜和标准的直流四探针技术研究了烧结温度对相组成，微观结构特征和临界电流密度（J（c））的影响。结果表明，在700℃烧结的样品中已达到最高的J（c）值，而J（c）随着烧结温度的升高而降低。发现所有样品的微观结构特征，例如。界面层厚度，相组成和MgB2晶粒尺寸是造成J（c）值差异的原因。 （c）2005 Elsevier B.V.保留所有权利。

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