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Low-loss temperature-stable ultralow dielectric constant microwave dielectric ceramic CeY2V3O12
The invention discloses an ultralow dielectric constant microwave dielectric ceramic material CeY2V3O12 and a preparation method thereof. The microwave dielectric ceramic material CeY2V3O12 has good heat stability and high quality factor (Qf) and can be also sintered at low temperature. The preparation method comprises the following steps: (1) weighing and mixing initial powder of CeO2, Y2O3 and V2O5 according to the composition of CeY2V3O12, wherein the purity of the initial powder is 99.9wt% or more; (2) carrying out wet ball milling and mixing on the raw materials in the step (1) for 12 hours and presintering the mixture in an atmosphere at 800 DEG C for 6 hours after drying the mixture, wherein the ball milling medium is distilled water; (3) adding a binder to the powder prepared in the step (2) and granulating the mixture, then carrying out compression moulding and finally sintering the product in an atmosphere at 850-900 DEG C for 4 hours, wherein the binder is 5% polyvinyl alcohol solution; the additive amount of polyvinyl alcohol accounts for 3% of the total mass of the powder. The prepared ceramic is well sintered at a temperature being 900 DEG C or below, has dielectric constant of 9.6-10.2, Qf value of 157000-199000GHz and low temperature coefficient of resonance frequency and has tremendous industrial application value.
Low-loss temperature-stable ultralow dielectric constant microwave dielectric ceramic CeY2V3O12
The invention discloses an ultralow dielectric constant microwave dielectric ceramic material CeY2V3O12 and a preparation method thereof. The microwave dielectric ceramic material CeY2V3O12 has good heat stability and high quality factor (Qf) and can be also sintered at low temperature. The preparation method comprises the following steps: (1) weighing and mixing initial powder of CeO2, Y2O3 and V2O5 according to the composition of CeY2V3O12, wherein the purity of the initial powder is 99.9wt% or more; (2) carrying out wet ball milling and mixing on the raw materials in the step (1) for 12 hours and presintering the mixture in an atmosphere at 800 DEG C for 6 hours after drying the mixture, wherein the ball milling medium is distilled water; (3) adding a binder to the powder prepared in the step (2) and granulating the mixture, then carrying out compression moulding and finally sintering the product in an atmosphere at 850-900 DEG C for 4 hours, wherein the binder is 5% polyvinyl alcohol solution; the additive amount of polyvinyl alcohol accounts for 3% of the total mass of the powder. The prepared ceramic is well sintered at a temperature being 900 DEG C or below, has dielectric constant of 9.6-10.2, Qf value of 157000-199000GHz and low temperature coefficient of resonance frequency and has tremendous industrial application value.
Low-loss temperature-stable ultralow dielectric constant microwave dielectric ceramic CeY2V3O12
FANG WEISHUANG (author) / FANG LIANG (author) / TANG YING (author)
2015-11-18
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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