Superconducting properties and mechanical strength of MgO fibres reinforced bulk Bi-2212 superconductor ceramics

Nasri A. Hamid, N. F. Shamsudin, K. W. Seec

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Fabrication of bulk superconductors with optimum superconducting properties and stable mechanical behaviour is essential for the application of high-temperature superconducting ceramics in power engineering. In such application, high critical current density Jc and excellent mechanical stability are among the most important properties. In this study, 3-8 wt-%MgO fibres are added to Bi-2212 superconductor powder. The MgO fibres are prepared in-house using the sol-gel route. The Bi-2212/MgO fibres compounds are heat treated, followed by partial-melting and slow-cooling. The mechanical strength of the samples is studied by conducting the compression test. From the results, the addition of 5%MgO fibres is found to improve the texture of the Bi-2212/MgO fibres ceramics without degrading the transition temperature Tc if compared with the other samples. In addition, the Jc values are enhanced due to the addition of the MgO fibres that significantly improved the texture of the compounds and the grain connectivity within the grains. Significantly higher stiffness, strength and toughness are observed in MgO added samples at room temperature.

Original languageEnglish
Pages (from-to)379-381
Number of pages3
JournalMaterials Research Innovations
Volume13
Issue number3
DOIs
Publication statusPublished - Sep 2009

Fingerprint

Ceramic superconductors
Strength of materials
ceramics
fibers
Fibers
Superconducting materials
textures
Textures
ceramic fibers
Ceramic fibers
Mechanical stability
compression tests
toughness
Powders
Superconducting transition temperature
Toughness
Sol-gels
stiffness
critical current
Melting

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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title = "Superconducting properties and mechanical strength of MgO fibres reinforced bulk Bi-2212 superconductor ceramics",
abstract = "Fabrication of bulk superconductors with optimum superconducting properties and stable mechanical behaviour is essential for the application of high-temperature superconducting ceramics in power engineering. In such application, high critical current density Jc and excellent mechanical stability are among the most important properties. In this study, 3-8 wt-{\%}MgO fibres are added to Bi-2212 superconductor powder. The MgO fibres are prepared in-house using the sol-gel route. The Bi-2212/MgO fibres compounds are heat treated, followed by partial-melting and slow-cooling. The mechanical strength of the samples is studied by conducting the compression test. From the results, the addition of 5{\%}MgO fibres is found to improve the texture of the Bi-2212/MgO fibres ceramics without degrading the transition temperature Tc if compared with the other samples. In addition, the Jc values are enhanced due to the addition of the MgO fibres that significantly improved the texture of the compounds and the grain connectivity within the grains. Significantly higher stiffness, strength and toughness are observed in MgO added samples at room temperature.",
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Superconducting properties and mechanical strength of MgO fibres reinforced bulk Bi-2212 superconductor ceramics. / A. Hamid, Nasri; Shamsudin, N. F.; Seec, K. W.

In: Materials Research Innovations, Vol. 13, No. 3, 09.2009, p. 379-381.

Research output: Contribution to journalArticle

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AU - Shamsudin, N. F.

AU - Seec, K. W.

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