Templated grain growth of Bi(Zn0.5Zr0.5)O-3 modified BiScO3-PbTiO3 piezoelectric ceramics for high temperature applications


AKÇA E. , Duran C., Kowalski B., Sehirlioglu A.

JOURNAL OF ASIAN CERAMIC SOCIETIES, 2021 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası:
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1080/21870764.2021.1920692
  • Dergi Adı: JOURNAL OF ASIAN CERAMIC SOCIETIES

Özet

2.5Bi(Zn0.5Zr0.5)O-3-37.5BiScO(3)-60PbTiO(3) (BZZ-BS-PT) ceramics were successfully textured in the [001] by templated grain growth (TGG) process using 5 vol% -oriented BaTiO3 (BT) plate-like templates. The templates were aligned in the matrix powder via tape casting and textured BZZ-BS-PT ceramics sintered at 1100 degrees C for 3 h in air had a relative density of 98% and a Lotgering factor of 0.91. Chemically stable BT templates in Pb and Bi-rich BZZ-BS-PT system gave rise to the formation of highly oriented polycrystalline structure with larger block-like grains. A very high unipolar strain of 0.3% and low-field (<5 kV/cm) piezoelectric charge coefficient (d(33)) of 930 pm/V when driven at 50 kV/cm were achieved in highly textured ceramics together with a Curie temperature (T-C) of 403 degrees C. The TGG approach significantly improved piezoelectric properties of the BZ-BS-PT ceramic system without deteriorating the dielectric properties, which is a very promising high-performance candidate for high-temperature sensor, transducer and actuator applications.