Improved electrical properties of SiO2-added BaTiO3 ceramics by microwave sintering

Improved electrical properties of SiO2-added BaTiO3 ceramics by microwave sintering
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微波烧结改善添加 SiO2 BaTiO3 陶瓷的电性能

DOI:
10.1016/j.matlet.2015.11.015
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发表时间:
2016-02
期刊:
影响因子:
3
通讯作者:
Liu Gang
Liu Gang
中科院分区:
材料科学3区
文献类型:
--
作者:
Yan Yan;Liu Lin;Ning Chao;Yang Yun;Xia Chengjie;Zou Yuetong;Liu Shiyuan;Wang Xiaoxue;Liu Kaihua;Liu Xiaokui;Liu Gang

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采用微波低温烧结法成功制备了SiO2掺杂的BaTiO 3陶瓷。纯BT陶瓷在居里点处表现出非常高的介电常数(11022)。当SiO2含量为0.5wt%时,未检测到第二相,且显微组织均匀,晶粒细小;而当SiO2含量进一步增加到1wt%和2wt%时,检测到Ba 2 TiSi 2 O 8,并出现柱状晶。致密化程度的提高和第二相的出现都有效地提高了材料的电击穿强度,其电击穿强度可达46 kV/cm。
SiO2added BaTiO3ceramics were successfully prepared by microwave sintering at low temperatures. Pure BT ceramic showed very high dielectric constant (11022) at Curie point. When SiO2was 0.5 wt%, no second phase was detected and it showed homogeneous microstructure with small grains; however, with further increase of SiO2addition to 1 and 2 wt%, Ba2TiSi2O8was detected and columnar grains appeared. The improvement of densification and appearance of second phase were all effective to improve the electrical breakdown strengths and reached 46 kV/cm.
钛酸钡陶瓷中的玻璃添加剂及其对与储能性能相关的电击穿强度的影响
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