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Synthesis of Oxide-Based Materials with the Brownmillerite Structure of the CaO–Bi2O3–Fe2O3 System

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Refractories and Industrial Ceramics Aims and scope

A single-phase material based on the complex oxide Ca2Fe2O5 doped with bismuth was synthesized by glycine-nitrate combustion. Characterization by x-ray diffractometry, helium pycnometry, scanning electron microscope, and elemental analysis showed that the material was isostructural to brownmillerite. The optimum temperature for the synthesis of the material was about 650°C and the material had thermal stability over a wide temperature range according to results of complex thermal analysis together with mass spectrometry. The sintering temperature and thermal expansion coefficient of the material were determined using a dilatometry method.

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Authors and Affiliations

  1. Ioffe Institute, St. Petersburg, Russia

    N. A. Lomanova

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  1. N. A. Lomanova
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Correspondence to N. A. Lomanova.

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Translated from Novye Ogneupory, No. 4, pp. 36 – 40, April, 2020.

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Lomanova, N.A. Synthesis of Oxide-Based Materials with the Brownmillerite Structure of the CaO–Bi2O3–Fe2O3 System. Refract Ind Ceram 61, 207–210 (2020). https://doi.org/10.1007/s11148-020-00457-5

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  • DOI: https://doi.org/10.1007/s11148-020-00457-5

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