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BMT-BZT composite novel microwave dielectric ceramic material and preparation method thereof

A technology of BMT-BZT and microwave dielectric ceramics, which is applied in the field of BMT-BZT composite new microwave dielectric ceramic materials and its preparation, can solve the problems of reducing the firing temperature of composite materials, reduce the densification sintering temperature, and promote the compact packing of space , The effect of improving the dielectric properties

Active Publication Date: 2020-09-18
山西省玻璃陶瓷科学研究所(有限公司)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention utilizes the two-phase composite of BMT material and BZT material, introduces manganese carbonate to modify the composite material at the same time, improves the microwave dielectric properties of the composite material; introduces a glass sintering aid to solve the problem of difficult sintering, and reduces the sintering of the composite material. temperature, so that BMT-BZT composite new microwave dielectric ceramic material has extremely high value in 5G filter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A BMT-BZT composite novel microwave dielectric ceramic material. Taking the total mass of the composite ceramic material as 100%, the components and their percentages are:

[0033] 20% tantalum pentoxide, 55% barium carbonate, 15% magnesium oxide, 5.992% zinc oxide, 3.2% manganese carbonate, 0.004% lanthanum oxide, 0.004% boric acid, 0.8% polyvinyl alcohol.

[0034] The preparation method of the described BMT-BZT composite novel microwave dielectric ceramic material, the steps are as follows:

[0035] (1) Weigh and mix tantalum pentoxide, barium carbonate, magnesium oxide and zinc oxide in proportion to obtain powder A, and use powder A according to the ratio of powder: deionized water: zirconium ball = 1:1.5:5 Put it into a ball mill jar, and ball mill it for 4 hours at a speed of 300r / min to obtain a ball mill slurry B;

[0036] (2) Dry the ball mill slurry B obtained in step (1), pass it through a 120-mesh sieve, put it into an alumina crucible, put the crucible int...

Embodiment 2

[0044] A BMT-BZT composite novel microwave dielectric ceramic material. Taking the total mass of the composite ceramic material as 100%, the components and their percentages are:

[0045] tantalum pentoxide 14%, barium carbonate 63%, magnesium oxide 17%, zinc oxide 2.97%, manganese carbonate 2%, lanthanum oxide 0.015%, boric acid 0.015%, polyvinyl alcohol 1%.

[0046]The preparation method of the described BMT-BZT composite novel microwave dielectric ceramic material, the steps are as follows:

[0047] (1) Weigh and mix tantalum pentoxide, barium carbonate, magnesium oxide and zinc oxide in proportion to obtain powder A, and use powder A according to the ratio of powder: deionized water: zirconium ball = 1:1.5:5 Put it into a ball mill jar, and ball mill it for 7 hours at a speed of 200r / min to obtain a ball mill slurry B;

[0048] (2) Dry the ball mill slurry B obtained in step (1), pass it through a 120-mesh sieve, put it into an alumina crucible, put the crucible into a si...

Embodiment 3

[0056] A BMT-BZT composite novel microwave dielectric ceramic material. Taking the total mass of the composite ceramic material as 100%, the components and their percentages are:

[0057] 24% tantalum pentoxide, 53% barium carbonate, 12.2% magnesium oxide, 3.948% zinc oxide, 4.8% manganese carbonate, 0.026% lanthanum oxide, 0.026% boric acid, 2% polyvinyl alcohol.

[0058] The preparation method of the described BMT-BZT composite novel microwave dielectric ceramic material, the steps are as follows:

[0059] (1) Weigh and mix tantalum pentoxide, barium carbonate, magnesium oxide and zinc oxide in proportion to obtain powder A, and use powder A according to the ratio of powder: deionized water: zirconium ball = 1:1.5:5 Put it into a ball mill jar, and ball mill it at a speed of 350 r / min for 5 hours to obtain a ball mill slurry B.

[0060] (2) Dry the ball mill slurry B obtained in step (1), pass it through a 120-mesh sieve, put it into an alumina crucible, put the crucible in...

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Abstract

The invention relates to a BMT-BZT composite novel microwave dielectric ceramic material and a preparation method thereof, and belongs to the technical field of microwave dielectric ceramics. Tantalumpentoxide, barium carbonate, magnesium oxide, zinc oxide, manganese carbonate, lanthanum oxide, boric acid and polyvinyl alcohol are used as raw materials. The preparation method comprises the following steps: preparing the raw materials to obtain powder A, ball-milled slurry B, pre-sintered powder C, ball-milled slurry D, sintering aid powder E, mixed powder F and a green body G; and putting theobtained green body G into a sintering furnace, sintering, carrying out heat preservation, and then cooling along with the furnace to obtain the BMT-BZT composite novel microwave dielectric ceramic material. The BMT material and the BZT material are compounded in two phases, and manganese carbonate is introduced to modify the composite material, so that the microwave dielectric property of the composite material is improved; and a glass sintering aid is introduced to solve the problem of difficult sintering, and the sintering temperature of the composite material is reduced, so that the BMT-BZT composite novel microwave dielectric ceramic material has extremely high value in the aspect of 5G filters.

Description

technical field [0001] The invention belongs to the technical field of microwave dielectric ceramics, and in particular relates to a BMT-BZT composite novel microwave dielectric ceramic material and a preparation method thereof. Background technique [0002] As 5G is officially put into commercial use, 5G base stations across the country will also be covered in one piece. Microwave dielectric ceramics are also widely used as filter materials in the construction of 5G base stations. Ceramic filters can not only ensure high power output, but also have the characteristics of light weight, good temperature resistance, long service life, and miniaturization, which are more suitable for the development requirements of highly integrated and miniaturized 5G base stations. [0003] At this stage, the global application and research of microwave dielectric ceramics in the field of 5G mobile communications is still in the development stage, mainly because microwave dielectric ceramic m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/626C04B35/634C04B35/64
CPCC04B35/01C04B35/6261C04B35/63416C04B35/64C04B2235/3251C04B2235/3206C04B2235/3284C04B2235/3262C04B2235/3227C04B2235/3409C04B2235/6562
Inventor 孟凡然王琨冯荣成龙胜杨尚权
Owner 山西省玻璃陶瓷科学研究所(有限公司)
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