摘要
采用固相反应法,研究了B2O3对0.69CaTiO3-0.31LaAlO3微波介质陶瓷烧结性能与介电性能的影响。通过X射线衍射分析表明,B2O3的引入未改变陶瓷的晶相组成。添加适量B2O3的可有效的降低0.69CaTiO3-0.31LaAlO3介电陶瓷的烧结温度,增强致密性并提高介电性能。在1500℃烧结温度,B2O3掺杂量为0.3wt%时,0.69CaTiO3-0.31LaAlO3陶瓷获得最佳介电性能:εr≈45.4,Qf≈52800 GHz,τf≈8.78 ppm/℃。
The effects of B2O3 additive on the sintering and microwave dielectric properties of 0.69CaTiO3-0.31LaAlO3 ceramics prepared by conventional solid-state route were investigated.The results of X-ray diffraction analysis showed that the addition of B2O3 does not change the crystal phase of ceramics.Moderate addition of B2O3 could not only effectively lower sintering temperature and promote the densification but also improve the dielectric properties.The 0.3wt% B2O3-doped 0.69CaTiO3-0.31LaAlO3 ceramic sintered at 1500 ℃ exhibits the optimal dielectric properties： εr≈45.4,Qf≈52800 GHz,τf≈8.78 ppm/℃.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2013年第7期1347-1352,共6页
Journal of Synthetic Crystals
基金
江苏高校优势学科建设工程资助项目
长江学者和创新团队发展计划(PCSIRT)
关键词
B2O3
介电性能
烧结温度
致密性
B2O3
dielectric properties
sintering temperature
densification
