High-dielectric-constant X8R type MLCC medium material and preparing method thereof
A technology of high dielectric constant and dielectric material, applied in high dielectric constant X8R type MLCC dielectric material and its preparation, medium and low temperature sintering high dielectric constant X8R type MLCC dielectric material and its preparation field, can solve the problem of high loss, Achieve the effects of reducing the capacity temperature change rate, increasing the Curie temperature, and increasing the insulation resistivity
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[0036] The present invention will be further described below through specific embodiments.
[0037] A preparation method of high dielectric constant X8R type MLCC dielectric material:
[0038] (1) Nb 2 o 5 Proportion with ZnO according to the Zn / Nb atomic molar ratio of 1:1, weigh, mix, sieve and calcinate at 800-900°C, ball mill and dry to obtain ZnNb 2 o 5 ;
[0039] (2) According to the chemical formula MBi 4 Ti 4 o 15 , M is one or more of Sr, Ca and Ba, for TiO 2 、 Bi 2 o 3 , SrCO 3 、BaCO 3 with CaCO 3 Carry out proportioning, make MBi 4 Ti 4 o 15 ;
[0040] (3) Proportion by weight as follows: 35-42 parts of Bi 2 o 3 , 8-14 parts of ZnO, 8-12 parts of CaCO 3 , 20-25 parts of H 3 BO 3 , 4 to 8 parts of SiO 2 and 7-11 Li 2 CO 3 , carrying out proportioning, weighing, mixing, sieving, melting at 1000-1100°C, water quenching, grinding and sieving to obtain fluxing glass powder;
[0041] (4) Combining ZnO with SiO 2 According to the Zn / Si atomic molar ...
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