Thermal analysis and microstructural characterization of ceramic green tapes prepared by aqueous tape casting


Şakar-Deliormanı A., ÇELİK E., Polat M.

Journal of Thermal Analysis and Calorimetry, vol.94, no.3, pp.663-667, 2008 (SCI-Expanded) identifier

  • Publication Type: Article / Abstract
  • Volume: 94 Issue: 3
  • Publication Date: 2008
  • Doi Number: 10.1007/s10973-008-9364-9
  • Journal Name: Journal of Thermal Analysis and Calorimetry
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.663-667
  • Keywords: Acrylic latex, DSC, Lead magnesium niobate, Tape casting, TG
  • Ankara Yıldırım Beyazıt University Affiliated: Yes

Abstract

In this study, aqueous lead magnesium niobate (PMN) slurry formulations were developed for tape casting using a poly(acrylic acid) - poly(ethylene) oxide comb polymer as the dispersant, nonionic acrylic latex as the binder phase and hydroxypropyl methylcellulose as the wetting agent. Concentrated suspensions were cast onto a silicone-coated mylar film, and the effect of acrylic latex on deposition was investigated. Thermal analyses were performed to investigate the mass loss of the green tapes as a function of calcination temperature. Differential scanning calorimetric analyses were made under air and nitrogen atmospheres to investigate the binder distribution through the green tapes. Results showed that it is possible to prepare flexible, crack free PMN thick films using a proper slurry composition in the presence of acrylic latex binder, without using any plasticizer. Additionally, decomposing mechanisms of the acrylic based binder were essentially different in the two atmospheres. © 2008 Springer Science+Business Media, LLC.