Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microwave dielectric ceramic material with near-zero temperature coefficient at high temperature and preparation method thereof
The invention provides a microwave dielectric ceramic material with a near-zero temperature coefficient at a high temperature and a preparation method thereof, and relates to the field of information function materials. The ceramic material comprises a base material and a modified additive. The chemical expression of the base material is (Mg,Ca,Sr)xLn2y(Si,Ti)O2+x+3y, the x is more than or equal to 0.80 and less than or equal to 1.20, the y is more than 0.00 and less than or equal to 0.03, and the Ln is selected from one or more of La, Y, Ce, Sm, Dy, Ho, Er and Nd; the base material is 98.5-100 wt% of the microwave dielectric ceramic material by mass fraction; and the modified additive is 0-1.5 wt% of the microwave dielectric ceramic material by mass fraction. The ceramic material is a lead-free environment-friendly material, the ceramic base material is synthesized through solid-phase synthesis by one time, and is supplemented by the certain doping modification additive, the dielectric constant of a prepared electronic ceramic device is 17-25, the quality factor is larger than or equal to 40000 GHz, the temperature coefficient tauf (-55 to 125 DEG C) is smaller than +/-5 ppm/DEG C, and the temperature coefficient tauf is smaller than +/-5 ppm/DEG C within the full temperature range of 180 DEG C. The ceramic material has good uniformity, is suitable for manufacturing microwave devices, and is particularly suitable for being used in an environment with large temperature difference.
本发明提供一种高温下近零温度系数的微波介质陶瓷材料及其制备方法，涉及信息功能材料领域。该陶瓷材料包括基料和改性添加物，基料的化学表达式为：(Mg,Ca,Sr)xLn2y(Si,Ti)O2+x+3y，其中0.80≤x≤1.20，0.00
Microwave dielectric ceramic material with near-zero temperature coefficient at high temperature and preparation method thereof
The invention provides a microwave dielectric ceramic material with a near-zero temperature coefficient at a high temperature and a preparation method thereof, and relates to the field of information function materials. The ceramic material comprises a base material and a modified additive. The chemical expression of the base material is (Mg,Ca,Sr)xLn2y(Si,Ti)O2+x+3y, the x is more than or equal to 0.80 and less than or equal to 1.20, the y is more than 0.00 and less than or equal to 0.03, and the Ln is selected from one or more of La, Y, Ce, Sm, Dy, Ho, Er and Nd; the base material is 98.5-100 wt% of the microwave dielectric ceramic material by mass fraction; and the modified additive is 0-1.5 wt% of the microwave dielectric ceramic material by mass fraction. The ceramic material is a lead-free environment-friendly material, the ceramic base material is synthesized through solid-phase synthesis by one time, and is supplemented by the certain doping modification additive, the dielectric constant of a prepared electronic ceramic device is 17-25, the quality factor is larger than or equal to 40000 GHz, the temperature coefficient tauf (-55 to 125 DEG C) is smaller than +/-5 ppm/DEG C, and the temperature coefficient tauf is smaller than +/-5 ppm/DEG C within the full temperature range of 180 DEG C. The ceramic material has good uniformity, is suitable for manufacturing microwave devices, and is particularly suitable for being used in an environment with large temperature difference.
本发明提供一种高温下近零温度系数的微波介质陶瓷材料及其制备方法，涉及信息功能材料领域。该陶瓷材料包括基料和改性添加物，基料的化学表达式为：(Mg,Ca,Sr)xLn2y(Si,Ti)O2+x+3y，其中0.80≤x≤1.20，0.00
Microwave dielectric ceramic material with near-zero temperature coefficient at high temperature and preparation method thereof
高温下近零温度系数的微波介质陶瓷材料及其制备方法
YANG HECHENG (Autor:in) / ZHANG JUNZHI (Autor:in) / LUO CHANGCHEN (Autor:in)
11.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Composite tantalate microwave dielectric ceramic with near-zero frequency temperature coefficient
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