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材料研究学报  2010, Vol. 24 Issue (4): 444-448    
  研究论文 本期目录 | 过刊浏览 |
Mg4Nb2O9/SrTiO3复合陶瓷的烧结特性和微波介电性能
姚国光1, 刘鹏2, 马红1, 田秀劳1,
1.西安邮电学院理学院 西安 710121
2.陕西师范大学物理与信息技术学院 西安 710062
The Sintering Behavior and Microwave Dielectric Properties of Mg4Nb2O9/SrTiO3 Composite Ceramic
YAO Guoguang1,  IU Peng2,  MA Hong1,  TIAN Xiulao1
1.School of Science, Xi'an University of Post and Telecommunications, Xi'an 710121
2.College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062
引用本文:

姚国光 刘鹏 马红 田秀劳. Mg4Nb2O9/SrTiO3复合陶瓷的烧结特性和微波介电性能[J]. 材料研究学报, 2010, 24(4): 444-448.
, . The Sintering Behavior and Microwave Dielectric Properties of Mg4Nb2O9/SrTiO3 Composite Ceramic[J]. Chin J Mater Res, 2010, 24(4): 444-448.

全文: PDF(734 KB)  
摘要: 

制备Li2CO3--V2O5(LV)共掺杂0.6Mg4Nb2O9--0.4SrTiO3复合陶瓷, 研究了LV掺杂对其烧结特性、相结构和微波介电性能的影响。结果表明:一定量LV掺杂使0.6Mg4Nb2O9--0.4SrTiO3复合陶瓷生成了Sr(NbTi)O3+δ和MgO杂相,并使其致密化烧结温度降低(至1175℃); 1.5%LV掺杂, 在1175℃烧结5h的样品具有较高的微波介电性能: τf=0.15 ppm/℃,  εr=20.1,  Q ? f=10240 GHz(at 8.5 GHz)。

关键词 无机非金属材料 Mg4Nb2O9--SrTiO3复合陶瓷 Li2CO3-V2O5 添加剂 微波介电性能    
Abstract

The effects of Li2CO3–V2O5 (LV) co-doped on the sinterability, phase compositions and microwave dielectric properties of 0.6Mg4Nb2O9– 0.4SrTiO3 composite ceramics were investigated. It is found that the densification sintering temperature of 0.6Mg4Nb2O9–0.4SrTiO3 is lowed to 1175℃ with an amount LV addtion. The second phases Sr(NbTi)O3+δ and MgO were confirmed by the XRD and EDX spectrum analysis. The specimens with 1.5% LV sintered at 1175℃ for 5 h shows excellent dielectric propertis: εr=20.1, Q · f=10240 GHz (at 8.5 GHz), τf=0.15 ppm/.

Key wordsinorganic non-metallic materials    Mg4Nb2O9-SrTiO3 composite ceramics    Li2CO3-V2O5 additives    microwave dielectric properties
收稿日期: 2010-04-02     
ZTFLH: 

TQ174

 
基金资助:

陕西省自然科学基金2009JM6001和陕西省教育厅09JK729资助项目。

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