Mechanical and superconducting properties of Ag/YBCO composite superconductors reinforced by the addition of Zr

Tetsuo Oka, Fumihiko Ogasawara, Yoshitaka Itoh, Motohiro Suganuma, Uichiro Mizutani

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The composite high TCsuperconductor Ag/YBCO reinforced by adding Zr has been synthesized by sintering a compressed mixture of ZrxYBa2Cu3O7-δ(0≤x≤1.0) and Ag powders at various ratios. The flexural strength in the Ag/ZYBCO reached its maximum value of 280 MPa at the composition x=0.8 and 33 vol.%Ag, being more than 5 times as large as that in the sintered YBCO. In addition, the presence of Ag can endow the plasticity while maintaining the superconducting transition temperature above about 80 K. Both the flexural strength and the Vickers hardness are enhanced in magnitude comparable to those for commercial alumina and magnesia. The enhanced mechanical strength is attributed to the unique microstructure, in which dispersed Ag particles remain intact with the Zr-bearing YBCO matrix, whereas CuO and BaZrO3precipitates in the 123-phase matrix act to reinforce the ceramic without disrupting the superconducting channel.

Original languageEnglish
Pages (from-to)1924-1931
Number of pages8
JournalJapanese Journal of Applied Physics
Volume29
Issue number10
DOIs
Publication statusPublished - 1990 Jan 1
Externally publishedYes

Fingerprint

flexural strength
Bending strength
Superconducting materials
Bearings (structural)
mechanical properties
disrupting
composite materials
Vickers hardness
Magnesia
Composite materials
matrices
plastic properties
Superconducting transition temperature
Strength of materials
Plasticity
sintering
Alumina
Sintering
aluminum oxides
transition temperature

Keywords

  • Ag/ZYBCO
  • Flexural strength
  • Iomposite high Tsuperconductor
  • Vickers hardness

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Mechanical and superconducting properties of Ag/YBCO composite superconductors reinforced by the addition of Zr. / Oka, Tetsuo; Ogasawara, Fumihiko; Itoh, Yoshitaka; Suganuma, Motohiro; Mizutani, Uichiro.

In: Japanese Journal of Applied Physics, Vol. 29, No. 10, 01.01.1990, p. 1924-1931.

Research output: Contribution to journalArticle

Oka, Tetsuo ; Ogasawara, Fumihiko ; Itoh, Yoshitaka ; Suganuma, Motohiro ; Mizutani, Uichiro. / Mechanical and superconducting properties of Ag/YBCO composite superconductors reinforced by the addition of Zr. In: Japanese Journal of Applied Physics. 1990 ; Vol. 29, No. 10. pp. 1924-1931.
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