Investigation of the piezoelectric and anti-reduction properties of (Ba, Ca) (Ti, Sn, Hf) textured ceramics prepared under low oxygen partial pressure conditions at low sintering temperatures

Cheng Che Tsai, Wu Han Liao, Sheng Yuan Chu, Cheng Shong Hong, Mei Chieh Yu, Yun You Lin, Zhi Yuan Wei

Research output: Contribution to journalArticlepeer-review

Abstract

Multilayer piezoelectric ceramics must be sintered in a reducing atmosphere, preventing oxidation of the inner base metal. Plate-like textured (Ba, Ca)(Ti, Sn, Hf)O3 ceramics with a <001> preferred orientation were successfully developed at a low oxygen partial pressure (PO2:10−8 atm) using a BaTiO3 (BT) template with sintering temperatures < 1300 °C, which is beneficial for multilayer applications using base metal co-firing with ceramics. When adding the 3 wt% BT template, the proposed samples had a Lottgering factor of 84 %, piezoelectric coefficients d33 = 324 pC/N, -d31 = 122 (pC/N), and Qm = 452, and the strain values increased from 0.07 % for the randomly oriented ceramics to 0.115 % at 20 kV/cm for the textured ceramics, confirming that the texturing behavior assisted the grain growth and improved both the soft and hard behaviors and insulation resistance of the proposed lead-free ceramics. These findings make a significant contribution to the production of high-power piezoelectric components.

Original languageEnglish
JournalJournal of the European Ceramic Society
DOIs
Publication statusAccepted/In press - 2020

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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