The effect of lead-glass additives on densification and dielectric properties of Ba<sub>0.4</sub>Sr<sub>0.6</sub>TiO<sub>3</sub> ceramics
Q M Zhang; J D Cui; G X Dong; J Du; Q M Zhang; Advanced Electronic Materials Institute, General Research Institute for Nonferrous Metals, Beijing 100088, China; J D Cui; Advanced Electronic Materials Institute, General Research Institute for Nonferrous Metals, Beijing 100088, China; G X Dong; Advanced Electronic Materials Institute, General Research Institute for Nonferrous Metals, Beijing 100088, China; J Du; Advanced Electronic Materials Institute, General Research Institute for Nonferrous Metals, Beijing 100088, China
Журнал:
Journal of Physics: Conference Series
Дата:
2009-03-01
Аннотация:
Effects of lead-glass additives on the densification, microstructure and dielectric properties of Ba<sub>0.4</sub>Sr<sub>0.6</sub>TiO<sub>3</sub> (BST) were investigated. Three simple glass systems including PbO-SiO<sub>2</sub>, PbO-SiO<sub>2</sub>-B<sub>2</sub>O<sub>3</sub>, and PbO-ZnO-B<sub>2</sub>O<sub>3</sub> were employed. 4 wt% lead-containing glass was added to BST ceramics, which accelerated densification with limited grain growth. The sintering temperatures of lead glass added BST ceramics were lowered to 1000 °C∼1050 °C with high density above 96%, which were all higher than that of the pure BST sintered at 1350 °C. The dielectric constant of BST ceramics with PbO-SiO<sub>2</sub> glass additives was higher than that of the pure BST ceramics and dissipation factor of all BST samples with lead glass additives was lower than 1×10<sup>-3</sup> at 1 kHz
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