期刊
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
卷 17, 期 4, 页码 1891-1898出版社
WILEY
DOI: 10.1111/ijac.13494
关键词
BZT - xBCT; electrical properties; mechanical behavior; piezoelectric
In this study, lead-free (1 - x)Ba(Zr0.2Ti0.8)O-3 - x(Ba0.7Ca0.3)TiO(3)compositions are synthesized via conventional solid oxide route, and the ceramics are fabricated with normal sintering in air. The effects of composition fluctuations on dielectric, piezoelectric, and mechanical properties are investigated. The phase structure and the microstructure are analyzed with X-ray diffraction and scanning electron microscopy. The best dielectric and piezoelectric properties of epsilon(r) = 11 207 andd(33) = 330 pC/N were obtained for BZT-0.35BCT and BZT-0.5BCT ceramics, respectively. The mechanical behavior-in terms of Vickers hardness and compressive and flexural strengths-was investigated, and the best mechanical behavior was found in the vicinity of the phase transition boundary withxvalues between 0.5 and 0.6.
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