ＣｕＮｂ／Ｎｂ３Ｓｎ超伝導線材の超伝導特性に与える事前曲げ歪みの効果
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In order to develop a Nb3Sn coil using a react and wind method, it is important to clarify the influence of bending strain because the superconducting characteristics of Nb3Sn are very sensitive to stress and strain. We investigated the effect of prebending strain εpb, which means repeated bending loads, from 0% to 1.5% for superconducting wires. We found that Ic, Tc and Bc2 were enhanced by prebending strain. When the prebending strain was 0.8%, Ic values showed maximum enhancement at a whole magnetic field for CuNb/Nb3Sn wires. For instance, Ic was approximately twice at 19 T. Bc2 increased about 1.5 T at a whole temperature when εpb was 1.0%. Tc increased from 17.5 K to 17.9 K at a prebending strain of 1.2%.
- 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)の論文
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) | 論文
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