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›› 2012, Vol. 12 ›› Issue (6): 1043-1047.

• 材料工程专栏 • Previous Articles     Next Articles

Effect of CuO Additive on Sintering and Microwave Dielectric Properties of Ca(Sm0.5Nb0.5)O3 Ceramics

LI Jia-mao QIU Tai FAN Chuan-gang，   

  1. School of Materials Science and Engineering, Anhui University of Technology College of Materials Science and Engineering, Nanjing University of Technology School of Materials Science and Engineering, Anhui University of Technology
  • Received:2012-10-18 Revised:2012-11-26 Online:2012-12-20 Published:2012-12-20
  • Contact: LI Jia-mao

添加CuO对Ca(Sm0.5Nb0.5)O3陶瓷烧结和微波介电性能的影响

李家茂 丘泰 樊传刚   

  1. 安徽工业大学材料科学与工程学院 南京工业大学材料科学与工程学院 安徽工业大学材料科学与工程学院
  • 通讯作者: 李家茂

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Abstract: Ca(Sm0.5Nb0.5)O3 microwave dielectric ceramics with different contents of CuO sintering additive were prepared by conventional high-temperature solid state method, and the effects of CuO additive on the sintering, structure and microwave dielectric properties of Ca(Sm0.5Nb0.5)O3 ceramics were studied. The results show that the densification of Ca(Sm0.5Nb0.5)O3 grains could be improved and a reduction of sintering temperature (about 200℃) obtained by adding CuO into Ca(Sm0.5Nb0.5)O3 ceramics. At 1350℃ for 4 h, Ca(Sm0.5Nb0.5)O3 ceramics with 1.5%(w) CuO addition possess good microwave dielectric properties, relative dielectric constant er=23.98, product quality and frequency Q×f=27754.5 GHz and temperature coefficient of resonant frequency tf=-2.7×10-6 ℃-1.

Key words: Ca(Sm0.5Nb0.5)O3, CuO, sintering temperature, microwave dielectric property

摘要： 采用传统高温固相反应法制备了掺杂不同量烧结助剂CuO的Ca(Sm0.5Nb0.5)O3微波介质陶瓷，研究了CuO对Ca(Sm0.5Nb0.5)O3陶瓷的烧结性、结构及微波介电性能的影响. 结果表明：添加CuO能有效促进Ca(Sm0.5Nb0.5)O3陶瓷晶粒致密化，降低烧结温度约200℃. 添加1.5%(w) CuO, 1350℃保温4 h烧结的Ca(Sm0.5Nb0.5)O3陶瓷的介电性能较优，相对介电常数er=23.98，品质因素与频率乘积Q′f=27754.5 GHz，谐振频率温度系数tf=-2.7′10-6 ℃-1.

关键词: Ca(Sm0.5Nb0.5)O3, CuO, 烧结温度, 微波介电性能

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