Effects of Dy2BaCuO5 contents on microstructure and mechanical strength of Ag-added Dy-Ba-Cu-O bulk superconductors

S. Nariki, N. Sakai, M. Murakami, I. Hirabayashi

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

We investigated the microstructure and mechanical strength of Ag-added DyBa2Cu3Oy (Dy123) bulk superconductors with various Dy2BaCuO5 (Dy211) contents. Single-grain Dy123 bulk samples 32 mm in diameter with the addition of 5-40 mol% of Dy211 and 10 wt.% of Ag2O were fabricated in air. The sample with 5 mol% Dy211 contained many macro-cracks in the ab-plane. The amount of cracks decreased with increasing Dy211 content. Three-point bending tests were performed at room temperature to measure the mechanical properties. The average bending strength of the sample with 5 mol% Dy211 was 73 MPa. The strength was improved to 95 MPa with an addition of 40 mol% Dy211.

Original languageEnglish
Pages (from-to)651-656
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume412-414
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct 1

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Keywords

  • DyBa CuO
  • DyBaCuO
  • Mechanical strength
  • Melt-textured bulk
  • Microstructure

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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