Improvement on dielectric and microstructural properties of lead free BiNaTiO ceramics through processing conditions.

Autor: Prado-Espinosa, Andrea, Camargo, Javier, Ramajo, Leandro, Castro, Miriam
Předmět:
Zdroj: Journal of Materials Science: Materials in Electronics; Nov2017, Vol. 28 Issue 22, p16836-16841, 6p
Abstrakt: In this work, we report the influence of processing conditions on BiNaTiO-based lead-free piezoceramics properties, obtained by conventional solid-state reaction method, employing a mechanochemical activation step and comparing two types of calcination steps. All samples were characterized by X-ray diffraction, Scanning Electron Microscopy and impedance Spectroscopy. It was observed that depending on the calcination route a secondary phase is formed. Moreover, the content of the secondary phase is strongly related to the intermediate grinding in the calcined process, and has a significant effect on the final ferroelectric properties. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index