Influence of preparation route and slip casting conditions on titania and barium titanate ceramics--颗粒学报PARTICUOLOGY

Nikumbh, A. K., & Adhyapak, P. V. (2012). Influence of preparation route and slip casting conditions on titania and barium titanate ceramics. Particuology, 10(3), 371–383. https://doi.org/10.1016/j.partic.2011.09.007

Influence of preparation route and slip casting conditions on titania and barium titanate ceramics

Arvind K. Nikumbh^*, Parag V. Adhyapak

Department of Chemistry, University of Pune, Ganeshkhind, Pune 411007, India

10.1016/j.partic.2011.09.007

Volume 10, Issue 3, June 2012, Pages 371-383

Received 2 May 2011, Revised 5 September 2011, Accepted 26 September 2011, Available online 17 January 2012.

E-mail: aknik@chem.unipune.ernet.in; aknik@chem.unipune.ac.in

Highlights

Abstract

Titania (TiO₂) and barium titanate (BaTiO₃) were synthesized using three different dicarboxylates, which included oxalate, malate and tartarate. These powders were characterized by X-ray powder diffraction, scanning electron micrographs, BET specific surface area and particle size distribution. Their properties depended to a great extent on the nature of the precursor. The titania and barium titanate powders obtained from the tartarate precursor were found to be good for slip casting. Slips of these oxides with different solids contents were prepared at different pH values using both distilled water and ethanol as the dispersing agent and also with and without deflocculant. The rheological behaviors of the suspensions were then determined, and the slip, green and sedimentation bulk densities were measured. The minimum viscosities were observed at pH 8.2 for the TiO₂–water and pH 10.2 for the BaTiO₃–water system.

Graphical abstract

Keywords

Ceramics; TiO₂; BaTiO₃; Chemical synthesis; Thermogravimetric analysis (TGA); X-ray diffraction

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