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Inicio Ciência & Tecnologia dos Materiais Synthesis and structure of Bi5FeTi3O15 ceramics
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Vol. 29. Issue 1.
Materiais 2015
Pages e210-e214 (January - April 2017)
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Vol. 29. Issue 1.
Materiais 2015
Pages e210-e214 (January - April 2017)
DOI: 10.1016/j.ctmat.2016.04.006
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Synthesis and structure of Bi5FeTi3O15 ceramics
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Agata Lisińska-Czekaja,
Corresponding author
agata.lisinska-czekaj@us.edu.pl

Corresponding author.
, Julian Plewab, Dionizy Czekaja
a University of Silesia in Katowice, Institute of Technology and Mechatronics, 12, Żytnia St., Sosnowiec 41-200, Poland
b University of Applied Sciences Münster, Department of Chemical Engineering, Stegerwaldstrasse 39, D-48565, Steinfurt, Germany
Article information
Abstract

The aim of the present research was to fabricate and study crystal structure and phase composition of Bi5FeTi3O15 (BTFO) ceramics exhibiting Aurivillius - type structure. By means of simultaneous thermal analysis and X-ray diffraction analysis the process of synthesis of BTFO ceramics has been studied. Mixed oxide method followed by pressureless sintering was used for ceramics preparation. Three endothermic thermal effects have been revealed on heating the stoichiometric mixture of initial powder oxides within the temperature range ΔT = 700-1200°C, while only one strong endothermic peak was found on heating the powder after calcination. The weak endothermic peaks were ascribed to the melting points of intermediate surface phases based on Bi2O3-rich phase formed at low temperature. X-ray diffraction studies have shown that BFTO ceramics consisted of Bi5FeTi3O15 and Bi4Ti3O12 phases in amount of 88.3% and 11.7% (weight fraction), respectively.

Keywords:
Aurivillius compound
Bi5FeTi3O15 ceramics
sintering
X-ray diffraction
crystal structure
phase analysis
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Copyright © 2017. Portuguese Society of Materials (SPM)
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