TY - JOUR
T1 - Preparation of tetragonal barium titanate nanopowders by microwave solid-state synthesis
AU - Qian, Haoyu
AU - Zhu, Guisheng
AU - Xu, Huarui
AU - Zhang, Xiuyun
AU - Zhao, Yunyun
AU - Yan, Dongliang
AU - Hong, Xianyong
AU - Han, Yin
AU - Fu, Zhenxiao
AU - Ta, Shiwo
AU - Yu, Aibing
PY - 2020/3/26
Y1 - 2020/3/26
N2 - Tetragonal-phase BaTiO3 powders of particle size 370 nm were synthesized by microwave sintering at 850 °C. The raw materials were BaCO3, TiO2, and alanine. SiC microspheres were used as microwave conductors. The effects of the holding time, sintering aids, and SiC addition on the preparation of BaTiO3 were investigated. The results indicate that the addition of SiC as a microwave acceptor leads to formation of microwave micro-regions. This enables uniform heating of the raw materials and decreases the calcination temperature needed to obtain BaTiO3. Alanine coordinates with Ba, and this loosens the metal–CO3 bond and promotes separation of CO2, decreases the BaCO3 decomposition temperature, and provides a higher nucleation site density. It gives an idea about the microwave solid-state synthesis of BaTiO3 powder.
AB - Tetragonal-phase BaTiO3 powders of particle size 370 nm were synthesized by microwave sintering at 850 °C. The raw materials were BaCO3, TiO2, and alanine. SiC microspheres were used as microwave conductors. The effects of the holding time, sintering aids, and SiC addition on the preparation of BaTiO3 were investigated. The results indicate that the addition of SiC as a microwave acceptor leads to formation of microwave micro-regions. This enables uniform heating of the raw materials and decreases the calcination temperature needed to obtain BaTiO3. Alanine coordinates with Ba, and this loosens the metal–CO3 bond and promotes separation of CO2, decreases the BaCO3 decomposition temperature, and provides a higher nucleation site density. It gives an idea about the microwave solid-state synthesis of BaTiO3 powder.
KW - Alanine
KW - BaTiO
KW - Microwave micro-region sintering
KW - SiC
KW - Tetragonal
UR - http://www.scopus.com/inward/record.url?scp=85082302962&partnerID=8YFLogxK
U2 - 10.1007/s00339-020-03472-y
DO - 10.1007/s00339-020-03472-y
M3 - Article
AN - SCOPUS:85082302962
SN - 0947-8396
VL - 126
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
IS - 4
M1 - 294
ER -