Title :
Texture development of a multi-filamentary Bi2Sr2Ca2Cu3Ox HTS tape during thermo-mechanical treatment
Author :
Oh, S.S. ; Choi, J.K. ; Ha, H.S. ; Ha, D.W. ; Park, C. ; Song, K.J. ; Kwon, Y.K. ; Ryu, K.S.
Author_Institution :
Korea Electrotechnol. Res. Inst., Changwon, South Korea
fDate :
6/1/2003 12:00:00 AM
Abstract :
In order to investigate texture development of superconducting grains, multi-filamentary Bi2Sr2Ca2Cu3Ox (Bi-2223)/Ag tapes were fabricated with different pass reduction ratios of rolling. The deformation-induced-texture and reaction-induced-texture for Bi-2212 and Bi-2223 were evaluated by X-ray diffraction including pole figure analysis. It was found that the texture of Bi-2223 develops by the progress of thermo-mechanical treatment. The texture for both Bi-2212 and Bi-2223 was found to develop better along the rolling direction than the transverse direction. By scanning electron microscopy observation, the highly textured region of Bi-2223 grain was found to expand by the intermediate rolling and additional heat treatment.
Keywords :
X-ray diffraction; bismuth compounds; calcium compounds; heat treatment; high-temperature superconductors; multifilamentary superconductors; scanning electron microscopy; silver; strontium compounds; superconducting tapes; texture; (Bi-2223)/Ag tapes; Bi2Sr2Ca2Cu3O10-Ag; X-ray diffraction; deformation-induced-texture; high temperature superconductor; multi-filamentary Bi2Sr2Ca2Cu3Ox HTS tape; pass reduction ratios; pole figure analysis; reaction-induced-texture; rolling; scanning electron microscopy; superconducting grains; texture development; thermo-mechanical treatment; Billets; Bismuth; Fabrication; Heat treatment; High temperature superconductors; Multifilamentary superconductors; Powders; Strontium; Superconducting films; Thermomechanical processes;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.812075
