Mechanical Properties of Superconducting (Gd,Y)BaCuO Large Single-Grain Material Fabricated by RE Compositional Gradient Technique
Mechanical Properties of Superconducting (Gd,Y)BaCuO Large Single-Grain Material Fabricated by RE Compositional Gradient Technique
复制标题
稀土成分梯度技术制备超导(Gd,Y)BaCuO大单晶材料的力学性能
DOI：
10.1109/tasc.2018.2856824
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发表时间：
2019
影响因子：
1.8
通讯作者：
A. Murakami and A. Iwamoto
中科院分区：
文献类型：
--
作者：
A. Murakami;M. Muralidhar and A. Iwamoto;A. Murakami and A. Iwamoto;A. Murakami and A. Iwamoto
为了研究(Gd，Y)BaCuO块体材料的力学性能，对从块体材料中切割出的试件进行了室温弯曲试验。采用Gd、Y含量不同的三个区域组成的前驱体制备大尺寸单晶块体材料，以克服晶种以外的不良形核现象。前驱体的制备使得Y含量随着离晶种放置中心的距离的增加而增加，以降低包晶分解温度。从块体材料中剪切了两种类型的弯曲试验试件-包括不同Gd和Y含量的两个区域之间的界面的试件和不包括该界面的试件。尽管不包括界面的试件与包含界面的试件相比，抗弯强度数据分散较大，但这些试件的平均抗弯强度值彼此相似。这一结果表明，界面不会导致整个块体材料的力学性能恶化。
In order to investigate the mechanical properties of a (Gd,Y)BaCuO large single-grain bulk material, bending tests were carried out at room temperature for the specimens cut from the bulk material. A precursor, which consisted of three regions with different Gd and Y contents, was used for the fabrication of the large single-grain bulk material in order to overcome the undesirable nucleation apart from the seed crystal. The precursor was prepared such that Y content increased with increase in the distance from the center, where the seed crystal was placed, to decrease the peritectic decomposition temperature. Two types of bending test specimens were cut from the bulk material-the specimens that included the interface between two regions with different Gd and Y contents and the specimens that did not include the interface. Although the bending strength data of the specimens that did not include the interface scattered widely in comparison with the specimens that included the interface, the average bending strength values of these specimens were similar to each other. This result demonstrates that the interface does not cause the deterioration of the mechanical properties of the whole bulk material.