Electrophoretic deposition of Ba 0.77Ca 0.23TiO 3 nanopowders

Ba 0.77Ca 0.23TiO 3 (BCT23) nanometric powders, synthesized by the modified Pechini method, were used as precursor to produce thick films (50–130 μm) employing the electrophoretic deposition (EPD) technique. The BCT23 powder presented a single crystalline phase with an average particle size and a cr...

Full description

Saved in:
Bibliographic Details
Published inJournal of materials processing technology Vol. 203; no. 1; pp. 526 - 531
Main Authors Antonelli, Eduardo, Silva, Ronaldo Santos, de Vicente, Fábio Simões, Zanatta, Antônio Ricardo, Hernandes, Antonio Carlos
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2008
Subjects
Barium calcium titanate
Electrophoretic deposition
Ferroelectric
Thick films
Barium calcium titanate
Ferroelectric
Thick films
Electrophoretic deposition
Online AccessGet full text

Cover

More Information
Summary:Ba 0.77Ca 0.23TiO 3 (BCT23) nanometric powders, synthesized by the modified Pechini method, were used as precursor to produce thick films (50–130 μm) employing the electrophoretic deposition (EPD) technique. The BCT23 powder presented a single crystalline phase with an average particle size and a crystallite size of ∼60 nm and ∼20 nm, respectively, when calcined at 800 °C/2 h. BCT23 thick films were deposited on platinum substrates starting from different suspensions prepared by dispersion of the powder into: isopropyl alcohol (IPA) or a mixture of acetylacetone (Acac) and ethanol (EtOH) (1:1, volumetric ratio). A milling process was used to deagglomerate the powders in order to increase the suspension stability and improving the deposition. Dense and crack free thick films with uniform microstructure were obtained after sintering at 1300 °C/2 h from Acac + EtOH solution.
ISSN:0924-0136
DOI:10.1016/j.jmatprotec.2007.10.061