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Title: Synthesis of Oxide-Based Materials with the Brownmillerite Structure of the CaO–Bi2O3–Fe2O3 System.
Authors: Lomanova, N. A.
Abstract: 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.
Subjects: MASS analysis (Spectrometry); SCANNING electron microscopes; THERMAL expansion; IRON oxide nanoparticles; THERMAL analysis
Publication: Refractories & Industrial Ceramics, 2020, Vol 61, Issue 2, p207
ISSN: 1083-4877
Publication type: Academic Journal
DOI: 10.1007/s11148-020-00457-5

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