人工晶体学报2017，Vol.46Issue(4)：728-732,5.
WO3掺杂对BST微波介质陶瓷性能的影响
Effect of WO3 Doping on the Properties of BST Microwave Dielectric Ceramics
摘要
Abstract
The effects of WO3 additive on the phase composition, microstructure, sintered properties and dielectric properties of Ba4Sm9.33Ti18O54 (BST) microwave dielectric ceramics which prepared by conventional solid-state route were investigated.The results show that moderate addition of WO3 can produce the lattice defects and promote ion diffusion by the inequivalent ion replacing Ti-site, Thus effectively lower the sintering temperature which dropped to 1280 ℃, but also reduce the generation of oxygen ion vacancy, decrease the dielectric loss.At the same time, the new phase BaWO4 was generated, which also help to improve the dielectric properties.The 0.25wt% WO3-doped BST ceramics sintered at 1280 ℃ for 3 h have the optimal integrated microwave dielectric properties: εr=80.4, Q·f=11740.85 GHz, Υf=-23.3×10-6 /℃.关键词
微波介质陶瓷/介电性能/Ba4Sm9.33Ti18O54/WO3Key words
microwave dielectric ceramics/dielectric property/Ba4Sm9.33Ti18O54/WO3分类
化学化工引用本文复制引用
黄春娥,王超,陆小荣,陆旻瑶..WO3掺杂对BST微波介质陶瓷性能的影响[J].人工晶体学报,2017,46(4):728-732,5.基金项目
江苏高校优势学科建设工程资助项目(PAPD) （PAPD）
长江学者和创新团队发展计划(IRT1146) （IRT1146）
