Title:
MICROWAVE DIELECTRIC CERAMIC AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/001032
Kind Code:
A1
Abstract:
A microwave dielectric ceramic and a preparation method therefor. The microwave dielectric ceramic comprises the following components: MgiAxOy+i, wherein A is selected from one of Sn, Si, and Al, i is in the range between 1 and 2, x is in the range between 1 and 2, y is in the range of between 2 and 3, and the content of the MgiAxOy+i in the microwave dielectric ceramic is 91%-96% by mass; BaCu(B2O5) having a content of 2%-5% by mass; and at least one of CaTiO3, Mg2TiO4, and MgTi2O5, the sum of the contents of the CaTiO3, Mg2TiO4, and MgTi2O5 being 2%-4% by mass. The microwave dielectric ceramic has an excellent dielectric constant, low dielectric loss, and relatively low sintering temperature.
Inventors:
LIU RUOPENG (CN)
ZHAO ZHI YA (CN)
ZHOU YU HUI (CN)
ZHAO ZHI YA (CN)
ZHOU YU HUI (CN)
Application Number:
PCT/CN2018/079817
Publication Date:
January 03, 2019
Filing Date:
March 21, 2018
Export Citation:
Assignee:
KUANG CHI INST ADVANCED TECH (CN)
International Classes:
C04B35/16; C04B35/44; C04B35/443; C04B35/457
Foreign References:
| CN103641469A | 2014-03-19 | |||
| CN102964121A | 2013-03-13 |
Other References:
DOU, GANG ET AL.: "Low-temperature sintered Mg2SiO4-CaTiO3 ceramics with near-zero", JOURNAL OF MATERIALS SCIENCE: MATERIALS IN ELECTRONICS, vol. 24, no. 5, 31 May 2013 (2013-05-31), pages 1431 - 1438, XP028345666, DOI: 10.1016/j.jeurceramsoc.2011.10.042
HUANG, YAFEI ET AL.: "Microstructure and Microwave Dielectric Properties of (1−x)MgAl2O4–x(Ca0.8Sr0.2)TiO3 Ceramics", JOURNAL OF ELECTRONIC MATERIALS, vol. 45, no. 10, 1 June 2016 (2016-06-01), pages 4903 - 4907, XP036044631, DOI: 10.1007/s11664-016-4533-2
LI, HAO ET AL.: " Relationships between Sn substitution for Ti and microwave dielectric properties of Mg2(Ti1−xSnx)O4 ceramics system", JOURNAL OF MATERIALS SCIENCE: MATERIALS IN ELECTRONICS, vol. 26, no. 1, 31 January 2015 (2015-01-31), pages 571 - 577, XP035423634, DOI: 10.1007/s10854-014-2436-7
HUANG, YAFEI ET AL.: "Microstructure and Microwave Dielectric Properties of (1−x)MgAl2O4–x(Ca0.8Sr0.2)TiO3 Ceramics", JOURNAL OF ELECTRONIC MATERIALS, vol. 45, no. 10, 1 June 2016 (2016-06-01), pages 4903 - 4907, XP036044631, DOI: 10.1007/s11664-016-4533-2
LI, HAO ET AL.: " Relationships between Sn substitution for Ti and microwave dielectric properties of Mg2(Ti1−xSnx)O4 ceramics system", JOURNAL OF MATERIALS SCIENCE: MATERIALS IN ELECTRONICS, vol. 26, no. 1, 31 January 2015 (2015-01-31), pages 571 - 577, XP035423634, DOI: 10.1007/s10854-014-2436-7
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