Effects of SPS Pressure on The Mechanical Properties of High Packing Ratio Bulk MgB2 Superconductor
Effects of SPS Pressure on The Mechanical Properties of High Packing Ratio Bulk MgB2 Superconductor
复制标题
SPS压力对高填充比块体MgB2超导体力学性能的影响
DOI：
10.1088/1742-6596/1054/1/012051
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
A. Iwamoto and J. G. Noudem
中科院分区：
文献类型：
--
作者：
A. Murakami;A. Iwamoto and J. G. Noudem
为了研究SPS压力对mgb2块体力学性能的影响，在不同压力下对mgb2块体试样进行了SPS处理。在室温下，通过对大块样品切割的试样进行弯曲试验来评估这些大块样品的力学性能。在断裂之前，这些体试样的应力应变行为几乎是线性的。在散装样品中，杨氏模量值没有显著差异。这些大块试样的平均抗弯强度值也很相似。但是，高压处理样品的抗弯强度数据与低压处理样品的抗弯强度数据相比存在较大的分散。弯曲强度值与拉伸侧断口上观察到的孔隙大小有关。
In order to investigate the effects of SPS pressure on the mechanical properties of MgB 2 bulk, MgB 2 bulk samples were processed by SPS under different pressures. Mechanical properties of these bulk samples were evaluated at room temperature through the bending tests for specimens cut from the bulk samples. Stress-strain behaviours of these bulk samples were almost linear until the fracture. No significant difference was observed for the Young's modulus values among the bulk samples. The average bending strength values of these bulk samples were also similar to each other. However, the bending strength data of the samples processed under higher pressure scattered widely in comparison with those of the sample processed under lower pressure. The bending strength values were related with the pore sizes observed on the tensile side fracture surfaces.