Anisotropic thermal and mechanical properties of bulk high- Tc Bi-based superconductors

Anna Tampieri, G. Celotti, A. Bellosi, S. Guicciardi, E. Landi

Research output: Contribution to journalArticlepeer-review

Abstract

Superconducting powders with nominal composition Bi1.84Pb0.34Sr1.91Ca2.03Cu3.06Ox were prepared by two different routes: by solid-state reaction of the respective oxides and carbonates and by pyrolysis of organic precursors. Highly dense superconducting specimens characterized by textured microstructure were prepared by hot pressing. The thermal-expansion coefficients of different typologies of samples were measured by dilatometric tests in both directions parallel and perpendicular to the pressure application direction. Structural rearrangements occurring during thermal treatments were studied. As regards mechanical characterization, microhardness, flexural strength and fracture toughness were evaluated and related to the microstructure anisotropic degree of the sample.

Original languageEnglish (US)
Pages (from-to)1863-1869
Number of pages7
JournalIl Nuovo Cimento D
Volume16
Issue number10
DOIs
StatePublished - Jan 1 1994

Keywords

  • 01.30.Cc
  • 74.30.Ek
  • Conference proceedings
  • thermal conductivity
  • Thermodynamic properties

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Ocean Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Engineering (miscellaneous)
  • Nuclear Energy and Engineering
  • Computer Science Applications
  • Chemical Engineering(all)

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