The effect of firing temperatures on phase formation, microstructure and dielectric properties of Bi0.5(Na0.74K0.16Li0.10)0.5TiO3 ceramics synthesized via the combustion route
作者： Phongthorn Julphunthong , Theerachai Bongkarn , Santi Maensiri
DOI: 10.1016/J.CERAMINT.2015.03.229
关键词: Dielectric 、 Sintering 、 Materials science 、 Vaporization 、 Calcination 、 Microstructure 、 Perovskite (structure) 、 Phase (matter) 、 Mineralogy 、 Chemical engineering 、 Ceramic
摘要: Abstract A novel combustion technique has been developed to prepare Bi0.5(Na0.74K0.16Li0.10)0.5 (abbreviated as BNKLT1610) ceramics. CH4N2O was used a fuel reduce the reaction temperature. The effects of calcination temperature and sintering on phase morphology evolution perovskite samples were investigated. vaporization raw materials products caused formation secondary in calcined powders sintered ceramics, respectively. XRD patterns suggested BNKLT1610 ceramics show coexistence rhombohedral tetragonal phases, relative amount each correlates with dielectric peak at depolarization (Td) exhibited all while maximum (Tm) observed only high temperatures. results persuade core–shell structure is formed prepared samples. Increasing grain core enlarger shell become thinner. constants are highly affected by densification. highest value er 1210 obtained from sample 1000 °C, which significantly higher than via solid-state method.
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