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Abstract
Goal of the present research was to fabricate BiNbO4 ceramics from the mixture of powders by the solid state reaction route and pressureless sintering at various temperatures (TS =8700C and TS =9100C) and study microstructure, phase composition and crystalline structure of BiNbO4 ceramics. Four batches were fabricated and examined, namely the one fabricated from the stoichiometric mixture of reagent – grade oxide powders, viz. Bi2O3 and Nb2O5 as well as the ones with an excess of 3%, 5% and 10% by mole of Bi2O3. It was found that apart from the main orthorhombic -BiNbO4 phase additional phases, namely tetragonal Bi5Nb3O15, and cubic Bi3NbO7 are possible to form from the mixture of bismuth oxide and niobium oxide. It was found that -BiNbO4 ceramics exhibited the orthorhombic symmetry identified as Pnna (52). However, small differences in elementary cell parameters were found for the samples sintered from stoichiometric and non-stoichiometric mixture of initial powders.
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Authors (4)
-
Katarzyna Osińska dr
-
Krzysztof Biernacki dr
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.2478/amm-2013-0166
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
ARCHIVES OF METALLURGY AND MATERIALS
no. 58,
pages 1317 - 1321,
ISSN: 1733-3490 - Language:
- English
- Publication year:
- 2013
- Bibliographic description:
- Czekaj D., Lisińska-Czekaj A., Osińska K., Biernacki K.: Effect of Bi2O3 Excess on Morphology and Structure of BiNbO4 Ceramics// ARCHIVES OF METALLURGY AND MATERIALS -Vol. 58,iss. 4 (2013), s.1317-1321
- DOI:
- Digital Object Identifier (open in new tab) 10.2478/amm-2013-0166
- Verified by:
- Gdańsk University of Technology
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