TY - JOUR
T1 - Effects of Ag content on the mechanical properties of (Nd,Eu,Gd)-Ba-Cu-O bulk superconductors
AU - Katagiri, K.
AU - Murakami, A.
AU - Kan, R.
AU - Kasaba, K.
AU - Noto, K.
AU - Muralidhar, M.
AU - Sakai, N.
AU - Murakami, M.
N1 - Funding Information:
We appreciate helpful assistance in the experiment by M. Takahashi of Iwate University. This work was partially supported by Japan Science and Technology Corporation under the Joint-research Project for Regional Intensive in Iwate Prefecture on “Development of practical applications of magnetic field technology for use in the region and in everyday living” and also partially supported by NEDO.
PY - 2003/10
Y1 - 2003/10
N2 - In order to investigate the effects of Ag content on the mechanical properties of a high performance melt-processed (Nd,Eu,Gd)Ba2Cu 3Oy single grain bulk superconductors with 30 mol% Gd 2BaCuO5, tensile tests of specimens cut from the bulks have been carried out at room temperature. The tensile strength in the direction perpendicular to the c-axis of the sample with 20 wt.% Ag was higher than that of the sample with 10 wt.% Ag. This is ascribed to a decrease in the void fraction and suppression of cracks by an increased Ag particles revealed by the microstructure image analysis. The almost identical value of Young's modulus obtained for both of the samples are presumably due to the balance of the effects of the voids and soft Ag particles mentioned above. Comparing these results with that in the c-axis direction and that obtained by the compressive test, the anisotropy of the elastic behavior associated with the effect of pre-existing micro-cracks perpendicular to the c-axis was discussed.
AB - In order to investigate the effects of Ag content on the mechanical properties of a high performance melt-processed (Nd,Eu,Gd)Ba2Cu 3Oy single grain bulk superconductors with 30 mol% Gd 2BaCuO5, tensile tests of specimens cut from the bulks have been carried out at room temperature. The tensile strength in the direction perpendicular to the c-axis of the sample with 20 wt.% Ag was higher than that of the sample with 10 wt.% Ag. This is ascribed to a decrease in the void fraction and suppression of cracks by an increased Ag particles revealed by the microstructure image analysis. The almost identical value of Young's modulus obtained for both of the samples are presumably due to the balance of the effects of the voids and soft Ag particles mentioned above. Comparing these results with that in the c-axis direction and that obtained by the compressive test, the anisotropy of the elastic behavior associated with the effect of pre-existing micro-cracks perpendicular to the c-axis was discussed.
KW - (Nd,Eu,Gd)-Ba-Cu-O bulk
KW - Ag content
KW - Mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=0043286027&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(03)01004-9
DO - 10.1016/S0921-4534(03)01004-9
M3 - 会議記事
AN - SCOPUS:0043286027
SN - 0921-4534
VL - 392-396
SP - 526
EP - 530
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - PART 1
T2 - Proceedings of the 15th International Symposium on Superconduc
Y2 - 11 November 2002 through 13 November 2002
ER -