Preparation and characterization of BaBi2Nb2O9(BBN) ceramics synthetized by polymeric precursors method
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Data
2001-01-01
Autores
Campos, A. L. [UNESP]
Mazon, T. [UNESP]
Varela, José Arana [UNESP]
Zaghete, M. A. [UNESP]
Cilense, M. [UNESP]
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Resumo
Pure BBN powders and with addition of 1 and 2 wt% in excess of bismuth were obtained by Pechini Method. The powders calcined at 300°C/4h were analyzed by TG/DTA to study the temperature of organic matter decomposition. A systematic study of calcination temperature and time to the formation of the BBN phase was performed and the phase formation was accompanied by XRD. The calcined powders at 800°C during 2h were analyzed by infrared spectroscopy and by BET. The powders were isostaticaly pressed and sintered at temperatures ranging from 900°C to 1000°C. The ceramics were characterized by XRD to control the crystalline phase and by SEM to analyze the microstructure.
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Barium compounds, Calcination, Crystal microstructure, Crystalline materials, Differential thermal analysis, Infrared spectroscopy, Powders, Scanning electron microscopy, Sintering, Synthesis (chemical), Thermogravimetric analysis, X ray diffraction analysis, Crystalline phase, Pechini method, Ceramic materials
Como citar
Key Engineering Materials, v. 189-191, p. 149-154.