无机材料学报 ›› 2015, Vol. 30 ›› Issue (2): 202-206.DOI: 10.15541/jim20140298

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低温烧结陶瓷BiMg2VO6的微波介电性能

谢会东, 席海红, 李 飞, 陈 超   

  1. (西安建筑科技大学 理学院, 西安 710055)
  • 收稿日期:2014-06-07 修回日期:2014-08-11 出版日期:2015-02-20 网络出版日期:2015-01-27
  • 基金资助:
    中国博士后科学基金(2012T50801)

Microwave Dielectric Properties of BiMg2VO6 Ceramic with Low Sintering Temperature

XIE Hui-Dong, XI Hai-Hong, LI Fei, CHEN Chao   

  1. (School of Science, Xi’an University of Architecture and Technology, Xi’an 710055, China)
  • Received:2014-06-07 Revised:2014-08-11 Published:2015-02-20 Online:2015-01-27
  • Supported by:
    Special Fund of China Postdoctoral Science Foundation (2012T50801)

摘要:

通过传统的固相反应方法制备了低温烧结微波介质陶瓷BiMg2VO6, 研究了该陶瓷与银的化学兼容性、物相、形貌及在720~840℃内的密度和微波介电性质, 并测试了陶瓷的红外反射光谱。结果表明: 陶瓷在780℃条件下与银共烧不发生反应, 相对密度大于93.8%。在780℃条件下烧结2 h得到的陶瓷具有最好的微波介电性能: 介电常数为13.4, Q×f值为15610 GHz (f = 8.775 GHz), 温度系数为-87.2×10-6/℃。红外反射谱数据处理显示, BiMg2VO6的光频介电常数ε = 3.4, 微波频段的外推值为13.5。BiMg2VO6陶瓷好的微波介电性能和低的烧结温度, 使其有望用作新的低温共烧陶瓷。

关键词: BiMg2VO6, 微波介电, 烧结性, 陶瓷

Abstract:

A low firing microwave dielectric ceramic BiMg2VO6 was prepared via conventional solid state reaction method. The chemical compatibility, phase, morphology, density and microwave dielectric properties of the ceramic in the sintering temperature range of 720~840℃ were studied. The infrared reflectivity spectra of the ceramic were measured. Results showed that the BiMg2VO6 ceramics did not react with Ag at 780℃ and the relative densities of the samples were greater than 93.8% at every sintering temperature conditions. Ceramic sintered at 780℃ for 2 h showed the optimum microwave dielectric properties with permittivity of 13.34, Q×f value of 15610 GHz (f= 8.775 GHz) and temperature coefficient value of -87.2×10-6/℃. The optical frequency permittivity was 3.4 and the extrapolated value to microwave frequency was 13.5. The optimum microwave dielectric properties and low sintering temperature of BiMg2VO6 ceramic enable it a promising candidate for low temperature co-fired ceramic applications.

Key words: BiMg2VO6, microwave dielectric properties, sintering behavior

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