Characterization of Yttrium-Doped Barium Zirconate Nanocrystalline Powder Prepared by Spray Pyrolysis

Abstract:

Investigation on polycrystalline electroceramics involves the synthesis, the consolidation and the analysis of the electrical behavior, along with careful evaluation of the final microstructure. The synthesis of ceramic powders with controlled characteristics is crucial in the study of materials with optimized properties. Distinct properties may be found in ceramic materials prepared by the several existing methods, due to chemical and phase homogeneities, and to the particle size distribution or medium particle size. In this work, yttrium-doped barium zirconate proton conductor was synthesized by spray pyrolysis, and characterized by several techniques aiming identifying the influence of some parameters of this method of synthesis with particle characteristics. Nanocrystalline powders synthesized at 600-700oC were found to be cubic and single phase. Moreover, depending on the gas flow and furnace temperature, spheroid and porous or cubic and solid particles may be obtained.

• Periodical: Materials Science Forum (Volumes 798-799)
• Pages: 407-412
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.798-799.407
• Online since: June 2014
• Authors: Eliana Navarro Santos Muccillo*, M.D. Gonçalves, Robson L. Grosso, R. Muccillo
• Keywords: Barium Zirconate, Chemical Synthesis, Microstructure

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