Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Temperature-stable type perovskite structure microwave dielectric ceramic
The invention discloses temperature-stable type perovskite structure microwave dielectric ceramic. The expression of the temperature-stable type perovskite structure microwave dielectric ceramic is 0.93MgTiO3-0.07(Ca0.4Na0.3La0.3)TiO3. Firstly, MgO and TiO2 are mixed according to the stoichiometry equation MgTiO3, and presintering is carried out at 800-1000 DEG C after ball milling, drying and screening are carried out; secondly,TiO2, CaCO3, La2O3 and Na2CO3 are mixed according to the stoichiometry equation (Ca0.4Na0.3La0.3)TiO3, and presintering is carried out at 900-1200 DEG C after ball milling, drying and screening are carried out; thirdly, the two kinds of powder are mixed according to the mole ratio of 93:7 and pressed into a green body after ball milling, drying, screening and pelleting are carried out; fourthly, the green body is sintered at 1200 DEG C-1300 DEG C, and the microwave dielectric ceramic is prepared. The QF value of the temperature-stable type perovskite structure microwave dielectric ceramic reaches 64,000-74,000 GHz, and the temperature coefficient (tao f) of resonance frequency reaches -5.6--2.8*10<-6>/DEG C. The ceramic system is simple in preparing technology and superior in microwave dielectric performance, has lowered sintering temperature and saved energy cost, conforms to the low-carbon environment-friendly concept and has wide application prospects.
Temperature-stable type perovskite structure microwave dielectric ceramic
The invention discloses temperature-stable type perovskite structure microwave dielectric ceramic. The expression of the temperature-stable type perovskite structure microwave dielectric ceramic is 0.93MgTiO3-0.07(Ca0.4Na0.3La0.3)TiO3. Firstly, MgO and TiO2 are mixed according to the stoichiometry equation MgTiO3, and presintering is carried out at 800-1000 DEG C after ball milling, drying and screening are carried out; secondly,TiO2, CaCO3, La2O3 and Na2CO3 are mixed according to the stoichiometry equation (Ca0.4Na0.3La0.3)TiO3, and presintering is carried out at 900-1200 DEG C after ball milling, drying and screening are carried out; thirdly, the two kinds of powder are mixed according to the mole ratio of 93:7 and pressed into a green body after ball milling, drying, screening and pelleting are carried out; fourthly, the green body is sintered at 1200 DEG C-1300 DEG C, and the microwave dielectric ceramic is prepared. The QF value of the temperature-stable type perovskite structure microwave dielectric ceramic reaches 64,000-74,000 GHz, and the temperature coefficient (tao f) of resonance frequency reaches -5.6--2.8*10<-6>/DEG C. The ceramic system is simple in preparing technology and superior in microwave dielectric performance, has lowered sintering temperature and saved energy cost, conforms to the low-carbon environment-friendly concept and has wide application prospects.
Temperature-stable type perovskite structure microwave dielectric ceramic
LI LINGXIA (Autor:in) / LI SAI (Autor:in) / LYU XIAOSONG (Autor:in) / SUN HAO (Autor:in) / YE JING (Autor:in)
07.10.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
Temperature-stable-type ultralow-dielectric-constant microwave dielectric ceramic LaY2V3O12
| Europäisches Patentamt | 2016
Temperature stable type ultralow dielectric constant microwave dielectric ceramic BaSiV2O8
| Europäisches Patentamt | 2015
Temperature-stable type ultralow-dielectric-constant microwave dielectric ceramic Ce2YV3O12
| Europäisches Patentamt | 2015
Temperature-stable type ultralow-dielectric-constant microwave dielectric ceramic SmYV2O8
| Europäisches Patentamt | 2015
Temperature-stable type ultralow-dielectric-constant microwave dielectric ceramic PrY2V3O12
| Europäisches Patentamt | 2015