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Effect of CaTiO3 Addition on Properties of MgNb2O6 Microwave Dielectric Ceramics
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Jiajun HUANG1, 2, 3, Yueming LI1, 2, 3, Yi SUN1, 2, 3, Kai LI1, 2, 3, Zhumei WANG1, 2, 3
Journal of the Chinese Ceramic Society | 2023, 51(4) : 851 - 858
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Journal of the Chinese Ceramic Society | 2023, 51(4): 851-858
• Research Articles •
Effect of CaTiO3 Addition on Properties of MgNb2O6 Microwave Dielectric Ceramics
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Jiajun HUANG1, 2, 3, Yueming LI1, 2, 3, Yi SUN1, 2, 3, Kai LI1, 2, 3, Zhumei WANG1, 2, 3
Affiliations
  • 1.School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China
  • 2.China National Light Industry Key Laboratory of Functional Ceramic Materials, Jingdezhen 333403, Jiangxi, China
  • 3.Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province, Jingdezhen 333403, Jiangxi, China

    • HUANG Jiajun (1996-), male, Master candidate. E-mail:

About Author:

HUANG Jiajun (1996-), male, Master candidate. E-mail:

Published: 2023-04-20 doi: 10.14062/j.issn.0454-5648.20220518
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To meet the requirements of high-frequency wireless communication, microwave dielectric ceramics of (1-x)MgNb2O6-xCaTiO3 (x=0, 0.02, 0.04, 0.08, 0.12, and 0.16) with a near-zero temperature coefficient were prepared by a solid-state method. The effect of CaTiO3 addition on the microstructure and dielectric properties of MgNb2O6 was investigated, and the formation and sintering behavior of each phase were analyzed. The results show that a proper addition of CaTiO3 can promote the sintering of MgNb2O6 and reduce its sintering temperature. Based on the X-ray diffraction analysis, CaTiO3 can react with MgNb2O6 to form CaNb2O6, Ti8O15, and Ti2Nb10O29 at a high temperature. Increasing the proportion of CaTiO3 reduces the quality factor Q×f, but increases the dielectric constant εr and frequency temperature coefficient τf. When the addition amount (x) of CaTiO3 is 0.16, the sample has the optimum microwave dielectric properties after sintering at 1 250 ℃ for 4 h (i.e., εr=21.6, Q×f =86 601 GHz, and τf = -7.3×10-6/℃).

microwave dielectric ceramics  /  positive temperature coefficient material  /  temperature coefficient  /  microwave dielectric properties
黄家俊, 李月明, 孙熠, 李恺, 王竹梅. CaTiO3添加对MgNb2O6微波介质陶瓷性能的影响. 硅酸盐学报, 2023 , 51 (4) : 851 -858 . DOI: 10.14062/j.issn.0454-5648.20220518
Jiajun HUANG, Yueming LI, Yi SUN, Kai LI, Zhumei WANG. Effect of CaTiO3 Addition on Properties of MgNb2O6 Microwave Dielectric Ceramics[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (4) : 851 -858 . DOI: 10.14062/j.issn.0454-5648.20220518
Appendix
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Year 2023 volume 51 Issue 4
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Article Info
doi: 10.14062/j.issn.0454-5648.20220518
  • Receive Date：2022-06-28
  • Online Date：2026-10-20
  • Published：2023-04-20
Article Data
Affiliations
History
  • Received：2022-06-28
  • Revised：2022-09-26
Funding
Affiliations
    1.School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China
    2.China National Light Industry Key Laboratory of Functional Ceramic Materials, Jingdezhen 333403, Jiangxi, China
    3.Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province, Jingdezhen 333403, Jiangxi, China

Corresponding:

LI Yueming (1965-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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