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首页> 外文期刊>Physica, C. Superconductivity and its applications >Measurements of the thermal stresses in large-grain Y-Ba-Cu-O superconductors
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Measurements of the thermal stresses in large-grain Y-Ba-Cu-O superconductors

机译：大晶粒Y-Ba-Cu-O超导体中热应力的测量

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摘要

Large single grain Y-Ba-Cu-O superconductors have significant potential for various industrial applications. However, large-grain Y-Ba-Cu-O experiences large forces due to its relatively low thermal conductivity during thermal cycles. The thermal stress arises mainly due to a large anisotropy in thermal conductivity between ab and c axes. In this paper, we attempted to measure the thermal stresses of large-grain Y-Ba-Cu-O during the cooling process from room temperature to 100 K using the strain gauges that are directly mounted onto the sample surface. It was found that the tensile strain increased along the c axis on cooling, which should be taken into account when handling large-grain samples. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 9]
机译：大型单晶Y-Ba-Cu-O超导体在各种工业应用中都具有巨大的潜力。但是，大晶粒的Y-Ba-Cu-O由于在热循环中相对较低的导热率而承受较大的力。热应力的产生主要是由于ab轴和c轴之间的导热系数存在较大的各向异性。在本文中，我们尝试使用直接安装在样品表面的应变仪来测量从室温到100 K的冷却过程中大晶粒Y-Ba-Cu-O的热应力。发现在冷却时，拉伸应变沿c轴增加，在处理大颗粒样品时应考虑到这一点。 （C）2001 Elsevier Science B.V.保留所有权利。 [参考：9]

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