低温工学
Online ISSN : 1880-0408
Print ISSN : 0389-2441
ISSN-L : 0389-2441
解説
溶融凝固酸化物高温超電導バルクの機械的特性評価
片桐 一宗村上 明笠場 孝一
著者情報
ジャーナル フリー

2006 年 41 巻 12 号 p. 553-560

詳細
抄録

High temperature superconducting bulks with highly oriented crystallographic structures are expected to be applied for high field quasi-permanent magnets, current leads and so on. However, the bulks sometimes fracture due to the thermal stress on the cooling process or the electromagnetic force during the magnetization. Thus, it has been recognized that improvement and understanding of the mechanical properties of the bulks are indispensable for practical application. In this review, we summarize the present status of evaluation process of the mechanical properties of various bulks. The Young's modulus, Poisson's ratio, fracture strength, fracture toughness and hardness are evaluated by tensile, bending, compression and hardness tests. The mechanical properties are anisotropic, mainly due to pre-existing micro-cracks. Data obtained are summarized and the influential parameters associated with the microstructures and testing conditions for the mechanical properties are explained.

著者関連情報
© 2006 公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)
前の記事 次の記事
feedback
Top