Effects of Ag content on the mechanical properties of (Nd,Eu,Gd)-Ba-Cu-O bulk superconductors

K. Katagiri, A. Murakami, R. Kan, K. Kasaba, K. Noto, M. Muralidhar, N. Sakai, M. Murakami

Research output: Contribution to journalConference articlepeer-review

14 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)526-530
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct 1
Externally publishedYes
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13

Keywords

  • (Nd,Eu,Gd)-Ba-Cu-O bulk
  • Ag content
  • Mechanical properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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