Fabrication of lead-free piezoelectric (Bi0.5Na0.5)TiO3–BaTiO3 ceramics using electrophoretic deposition

Minsu Kim, Ryo Ito, Sangwook Kim, Gopal Prasad Khanal, Ichiro Fujii, Tohru Suzuki, Tetsuo Uchikoshi, Chikako Moriyoshi, Yoshiro Kuroiwa, Satoshi Wada

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5 Citations (Scopus)

Abstract

Electrophoretic deposition (EPD) process has certain advantages such as it can be applied for a mass production and also can be combined with magnetic crystal alignment technique. In this work, we prepared lead-free 85(Bi0.5Na0.5)TiO3–15BaTiO3 (85BNT–15BT) piezoelectric ceramics by conventional uniaxial pressing and EPD process. Various conditions were optimized such as suspension media, applied electrical field, and deposition time in order to yield dense green ceramics of 85BNT–15BT composition using EPD process. 85BNT–15BT ceramics prepared using EPD process revealed the Curie temperature of about 250 °C, coercive field of about 30 kV/cm, and piezoelectric constant (d33) of 75 pC/N. The EPD-processed samples exhibited structural and electrical properties similar to that of the conventionally processed one suggesting the successful fabrication of 85BNT–15BT piezoelectric ceramics by EPD method without composition deviation. This study lays a foundation on the fabrication of Bi-based lead-free piezoelectric ceramics by an alternative route other than the conventionally practiced solid-state reaction method maintaining the similar chemical composition, moreover, leaving a large space to explore more in the future.

Original languageEnglish
Pages (from-to)2396-2404
Number of pages9
JournalJournal of Materials Science
Volume53
Issue number4
DOIs
Publication statusPublished - 2018 Feb 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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    Kim, M., Ito, R., Kim, S., Khanal, G. P., Fujii, I., Suzuki, T., Uchikoshi, T., Moriyoshi, C., Kuroiwa, Y., & Wada, S. (2018). Fabrication of lead-free piezoelectric (Bi0.5Na0.5)TiO3–BaTiO3 ceramics using electrophoretic deposition. Journal of Materials Science, 53(4), 2396-2404. https://doi.org/10.1007/s10853-017-1717-y