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Microwave Dielectric and Mechanical Property of Cordierite Ceramics by Ca2+Doping
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Shijie ZHOU1, Feng WANG2, Zhiyong HE1, 2, Xiaobo WANG2
Journal of the Chinese Ceramic Society | 2022, 50(6) : 1542 - 1547
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Journal of the Chinese Ceramic Society | 2022, 50(6): 1542-1547
• Research Articles •
Microwave Dielectric and Mechanical Property of Cordierite Ceramics by Ca2+Doping
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Shijie ZHOU1, Feng WANG2, Zhiyong HE1, 2, Xiaobo WANG2
Affiliations
  • 1.Central Iron & Steel Research Institute, Beijing 100081, China
  • 2.ChinaChina Iron & Steel Research Institute Group, Beijing 100081, China

    • ZHOU Shijie (1997-), Master. E-mail:

About Author:

ZHOU Shijie (1997-), Master. E-mail:

Published: 2022-06-20 doi: 10.14062/j.issn.0454-5648.20220135
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A series of Ca2+-doped cordierite ((Mg1-xCax)2Al4Si5O18) ceramic powders were prepared by a sol-gel method. The effect of the substitution of Ca2+ for Mg2+ of cordierite ceramics on the sintering properties, structural characteristics, microwave dielectric properties and fracture toughness was investigated. The results show that the introduction of Ca2+ can improve the sintering activity of the powder, thus improving the density of the sample and the sintering densification. The single α-cordierite phase is obtained in the range of 0<x≤0.1 because Ca2+ is doped into the cordierite structure to form the solid solution. When the x value is larger than 0.1, an anorthite phase appears. The dielectric constant of cordierite ceramic decreases, and the quality factor, the temperature coefficient of frequency and fracture toughness improve when Mg2+ substitutes for Ca2+. The optimum performance of (Mg1-xCax)2Al4Si5O18 ceramic is obtained when the x value is 0.1, i.e., the dielectric constant of 4.61, the quality factor of 9949GHz and the temperature coefficient of frequency of -26×10-6/℃, and the fracture toughness of 4.76MPa·m1/2.

cordierite ceramic  /  doping  /  microwave dielectric  /  mechanical properties
周士杰, 王峰, 贺智勇, 王晓波. Ca2+掺杂堇青石陶瓷的微波介电及力学性能. 硅酸盐学报, 2022 , 50 (6) : 1542 -1547 . DOI: 10.14062/j.issn.0454-5648.20220135
Shijie ZHOU, Feng WANG, Zhiyong HE, Xiaobo WANG. Microwave Dielectric and Mechanical Property of Cordierite Ceramics by Ca2+Doping[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (6) : 1542 -1547 . DOI: 10.14062/j.issn.0454-5648.20220135
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Year 2022 volume 50 Issue 6
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Article Info
doi: 10.14062/j.issn.0454-5648.20220135
  • Receive Date：2022-02-25
  • Online Date：2026-10-22
  • Published：2022-06-20
Article Data
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History
  • Received：2022-02-25
  • Revised：2022-03-21
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Affiliations
    1.Central Iron & Steel Research Institute, Beijing 100081, China
    2.ChinaChina Iron & Steel Research Institute Group, Beijing 100081, China

Corresponding:

HE Zhiyong (1970-), male, Professorate senior Engineer. E-mail:
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Citations
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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