Triethanolamine as an Additive in the Electrophoretic Deposition of TiTe3O8 Thick Films

resumo

A successful electrophoretic deposition (EPD) markedly depends on the stability of the suspension. In this study the role of Triethanolamine (TEA) as a stabilizer in EPD of thick films of TiTe3O8 is presented. TiTe3O8 powders were synthesized via a conventional solid-state-reaction method and dispersed in acetone with and without TEA. The stability of the suspensions was addressed by zeta-potential, UV light and FTIR measurements. The specific adsorption of TEA to TiTe3O8 particles results in a high zeta potential and improved stability of the suspensions, allowing the preparation of high quality TiTe3O8 thick films on Pt coated Si substrates. TiTe3O8 films sintered at 700 degrees C are dense and homogeneous.

palavras-chave

MICROWAVE DIELECTRIC-PROPERTIES; HYDROXYAPATITE COATINGS; BI2O3-TIO2-TEO2 SYSTEM; AQUEOUS SUSPENSION; TITANATRANES; CERAMICS

categoria

Materials Science

autores

Su, XM; Wu, AY; Vilarinho, PM

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