A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ultralow-dielectric-constant dielectric ceramic InAlMg6O9 and preparation method thereof
The invention discloses temperature-stable type ultralow-dielectric-constant dielectric ceramic InAlMg6O9 and a preparation method thereof. The preparation method comprises: (1) weighing original powders of In2O3, Al2O3 and MgO with the purity of 99.9 wt% or more according to the formula of InAlMg6O9 and proportioning; (2) performing wet-type ball milling mixing on the raw materials of the step (1) for 12 h by selecting distilled water as a ball milling medium, baking and pre-burning at 1300 DEG C in atmosphere for 6 h; and (3) adding a binder into the powder prepared in the step (2) and granulating, then performing compression molding, and finally sintering at 1350-1400 DEG C in atmosphere for 4 h, wherein the binder employs a polyvinyl alcohol solution with the mass concentration of 5% and the addition amount of polyvinyl alcohol is 3% by mass of the total powder. The prepared ceramic has good sintering, has the dielectric constant up to 6.9-7.5, has the quality factor Qf up to 149000-194000 GHz, has a small resonant-frequency temperature coefficient, and has extremely great application value in industry.
Ultralow-dielectric-constant dielectric ceramic InAlMg6O9 and preparation method thereof
The invention discloses temperature-stable type ultralow-dielectric-constant dielectric ceramic InAlMg6O9 and a preparation method thereof. The preparation method comprises: (1) weighing original powders of In2O3, Al2O3 and MgO with the purity of 99.9 wt% or more according to the formula of InAlMg6O9 and proportioning; (2) performing wet-type ball milling mixing on the raw materials of the step (1) for 12 h by selecting distilled water as a ball milling medium, baking and pre-burning at 1300 DEG C in atmosphere for 6 h; and (3) adding a binder into the powder prepared in the step (2) and granulating, then performing compression molding, and finally sintering at 1350-1400 DEG C in atmosphere for 4 h, wherein the binder employs a polyvinyl alcohol solution with the mass concentration of 5% and the addition amount of polyvinyl alcohol is 3% by mass of the total powder. The prepared ceramic has good sintering, has the dielectric constant up to 6.9-7.5, has the quality factor Qf up to 149000-194000 GHz, has a small resonant-frequency temperature coefficient, and has extremely great application value in industry.
Ultralow-dielectric-constant dielectric ceramic InAlMg6O9 and preparation method thereof
JIANG XUEWEN (author) / LI CHUNCHUN (author) / SU HEPING (author)
2015-04-01
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
Ultralow-dielectric-constant dielectric ceramic Li2Zn3Si2O8 and preparation method thereof
| European Patent Office | 2015
Ultralow-dielectric-constant dielectric ceramic Li2Zn2Si2O7 and preparation method thereof
| European Patent Office | 2015
Ultralow dielectric constant microwave dielectric ceramic La4VBO10 and preparation method thereof
| European Patent Office | 2016
Ultralow-dielectric-constant microwave dielectric ceramic Li3Si2B3O10 and preparation method thereof
| European Patent Office | 2015
Ultralow-dielectric-constant microwave dielectric ceramic Li3ZnBi5O11 and preparation method thereof
| European Patent Office | 2015