Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
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Excellent sintering ability of Bi(Mn2/3Sb1/3)O3-added (Bi1/2K1/2)TiO3 lead-free piezoceramics with high density and low dielectric loss
Zhihua GUOMankang ZHUMupeng ZHENGYudong HOU
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2019 Volume 127 Issue 4 Pages 215-220

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Abstract

By adding 1.5 mol.% Bi(Mn2/3Sb1/3)O3 (BMS), (Bi1/2K1/2)TiO3 (BKT) ceramics show an excellent sintering ability in conventional oxide sintering process. In a wide temperature range from 1020–1050°C, the 0.985BKT–0.015BMS (BKMS) ceramics demonstrate a super-high relative density of 98% and low dielectric loss tan δ of 0.017. Even though the temperature reaches to 1060°C, BKMS ceramics maintain high relative density over 95% other than being collapsed as the pure BKT did. Besides, the BKMS ceramics sintered at 1020 to 1050°C present adequately high electrical properties. The enhanced sintering ability of BKMS ceramics is attributed to the increased viscosity of liquid induced by Sb5+ solving in the liquid phase during sintering. The work provides a way to realize the densification of BKT ceramics.

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