Synthesis and Characterization of a Nano-Scaled Barium Cerate Perovskite Powder Using Starch As Polymerization Agent

Solid State Ionics 203 (2011) 52–56

17 Pages Posted: 23 Jan 2018

See all articles by Roberto Köferstein

Roberto Köferstein

Martin Luther Universitat Halle Wittenberg

Dietrich Hesse

Max Planck Institute of Microstructure Physics

Stefan Ebbinghaus

Martin Luther University of Halle-Wittenberg - Institute of Chemistry, Inorganic Chemistry

Date Written: November 16, 2011

Abstract

The preparation of nano-sized BaCeO3 powder using starch as a polymerization agent is described herein. Phase evolution during the decomposition process of a (BaCe)-gel was monitored by XRD. A phase-pure nano-sized BaCeO3 powder was obtained after calcining of the (BaCe)-gel at 920 °C. The resulting powder has a specific surface area of 15.4 m2/g. TEM investigations reveal particles mainly in the size range of 30 to 65 nm. The shrinkage and sintering behaviour of resulting powder compacts were studied in comparison to a coarse-grained mixed-oxide BaCeO3 powder (SBET = 2.1 m2/g). Dilatometric measurements show that the beginning of shrinkage of compacts from the nano-sized powder is downshifted by 300 °C compared to mixed-oxide powder. Compacts from the nano-sized powder reach a relative density of 91 % after sintering at 1450 °C for 10 h.

Keywords: BaCeO3, perovskites, nano, sintering, starch

Suggested Citation

Köferstein, Roberto and Hesse, Dietrich and Ebbinghaus, Stefan, Synthesis and Characterization of a Nano-Scaled Barium Cerate Perovskite Powder Using Starch As Polymerization Agent (November 16, 2011). Solid State Ionics 203 (2011) 52–56 . Available at SSRN: https://ssrn.com/abstract=3102281

Roberto Köferstein (Contact Author)

Martin Luther Universitat Halle Wittenberg ( email )

Universitätsplatz 10
Halle (Saale), Saxony-Anhalt 06108
Germany

Dietrich Hesse

Max Planck Institute of Microstructure Physics

Weinberg 2
06120 Halle (Saale)
Germany

Stefan Ebbinghaus

Martin Luther University of Halle-Wittenberg - Institute of Chemistry, Inorganic Chemistry ( email )

Halle (Saale), Saxony-Anhalt 06108
Germany

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