Synthesis and densification behaviour of Bi-based superconducting powder by organic precursor

Anna Tampieri; G. Celotti

doi:10.1016/0955-2219(95)00046-W

Synthesis and densification behaviour of Bi-based superconducting powder by organic precursor

Anna Tampieri, G. Celotti

Houston Methodist

Research output: Contribution to journal › Article › peer-review

Abstract

BSCCO (2223) phase superconducting powder was synthesized by pyrolysis of a solution of citrates containing cations in the relative amounts required to prepare compounds with the nominal composition Bi_1.84Pb_0.35Sr_1.9Ca_2.1Cu₃O_x Starting from the pyrolysed precursor, the preparation of (2 223) monophasic powder is realized in very short processing time of only 24 h. Reactions among components were investigated by thermogravimetric and differential thermal analysis; the products obtained on treating powders at various temperatures in the range 500-950 °C were defined by XRD. The identification of the reaction intermediates that play a crucial role in the synthetic process was systematically performed, and a comparison with the solidstate reaction method was carried out. Hot pressing was performed in order to prepare highly dense superconducting materials. The densification behaviour of the powder obtained by the citrate route was studied in comparison with the solid-state reacted one.

Original language	English (US)
Pages (from-to)	735-739
Number of pages	5
Journal	Journal of the European Ceramic Society
Volume	15
Issue number	8
DOIs	https://doi.org/10.1016/0955-2219(95)00046-W
State	Published - Jan 1 1995

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1016/0955-2219(95)00046-W

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title = "Synthesis and densification behaviour of Bi-based superconducting powder by organic precursor",

abstract = "BSCCO (2223) phase superconducting powder was synthesized by pyrolysis of a solution of citrates containing cations in the relative amounts required to prepare compounds with the nominal composition Bi1.84Pb0.35Sr1.9Ca2.1Cu3Ox Starting from the pyrolysed precursor, the preparation of (2 223) monophasic powder is realized in very short processing time of only 24 h. Reactions among components were investigated by thermogravimetric and differential thermal analysis; the products obtained on treating powders at various temperatures in the range 500-950 °C were defined by XRD. The identification of the reaction intermediates that play a crucial role in the synthetic process was systematically performed, and a comparison with the solidstate reaction method was carried out. Hot pressing was performed in order to prepare highly dense superconducting materials. The densification behaviour of the powder obtained by the citrate route was studied in comparison with the solid-state reacted one.",

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AU - Celotti, G.

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AB - BSCCO (2223) phase superconducting powder was synthesized by pyrolysis of a solution of citrates containing cations in the relative amounts required to prepare compounds with the nominal composition Bi1.84Pb0.35Sr1.9Ca2.1Cu3Ox Starting from the pyrolysed precursor, the preparation of (2 223) monophasic powder is realized in very short processing time of only 24 h. Reactions among components were investigated by thermogravimetric and differential thermal analysis; the products obtained on treating powders at various temperatures in the range 500-950 °C were defined by XRD. The identification of the reaction intermediates that play a crucial role in the synthetic process was systematically performed, and a comparison with the solidstate reaction method was carried out. Hot pressing was performed in order to prepare highly dense superconducting materials. The densification behaviour of the powder obtained by the citrate route was studied in comparison with the solid-state reacted one.

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Synthesis and densification behaviour of Bi-based superconducting powder by organic precursor

Abstract

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