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a dielectric ceramic

A dielectric ceramic and quality technology, applied in the field of dielectric ceramics, can solve few problems and achieve the effect of good mechanical properties and compact structure

Active Publication Date: 2016-08-03
KUANG CHI INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional dielectric ceramics include barium titanate and some oxides, but rarely achieve products with a dielectric constant greater than 30 and a Q value greater than 10,000

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Will Ba 2 Ti 9 o 20 、B 2 o 3 Prepared according to the mass ratio of 100:4, the above materials were sintered for 2.5 hours at a temperature of 1000-1050°C and a pressure of 180-200MPa using hot isostatic pressing technology to prepare the required dielectric ceramics; after testing, the obtained dielectric ceramics The dielectric constant of the ceramic is 34, and the Q value is 21501; the above-mentioned dielectric ceramic can also be prepared by spark plasma sintering technology.

Embodiment 2

[0016] Will Ba 2 Ti 9 o 20 、B 2 o 3 According to the mass ratio of 100:8, the above materials were sintered for 4 hours under the conditions of temperature 1040-1080°C and pressure 200-220MPa by using hot isostatic pressing technology to prepare the required dielectric ceramics; after testing, the obtained dielectric ceramics The dielectric constant of the ceramic is 32, and the Q value is 20985; the above-mentioned dielectric ceramic can also be prepared by spark plasma sintering technology.

Embodiment 3

[0018] Will Ba 2 Ti 9 o 20 、B 2 o 3 Prepared according to the mass ratio of 100:6, using hot isostatic pressing technology to sinter the above materials for 3 hours at a temperature of 980-1000°C and a pressure of 200-220MPa to prepare the required dielectric ceramics; after testing, the obtained dielectric ceramics The dielectric constant of the ceramic is 34, and the Q value is 21068; the above-mentioned dielectric ceramic can also be prepared by spark plasma sintering technology.

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PUM

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Abstract

The invention provides a dielectric ceramic which is prepared from Ba2Ti9O20 and B2O3, wherein the B2O3 accounts for 4-8 wt% of the Ba2Ti9O20. The dielectric constant of the dielectric ceramic can reach 30 or so, and the Q value is up to 20000; and the dielectric ceramic is compact and uniform, has the advantages of favorable mechanical properties and the like, and is suitable for popularization and application in the field of filters.

Description

【Technical field】 [0001] The invention relates to the field of ceramic materials, in particular to a dielectric ceramic. 【Background technique】 [0002] Dielectric ceramics are used in components such as dielectric filters and capacitors, and usually require high dielectric constant and low dielectric loss tangent. With the new development of antenna microwave devices, there are higher requirements for the dielectric constant and loss of dielectric ceramics. Conventional dielectric ceramics include barium titanate and some oxides, but rarely achieve products with a dielectric constant greater than 30 and a Q value greater than 10,000. 【Content of invention】 [0003] In view of the above-mentioned defects, the technical solution adopted by the present invention to solve the above-mentioned technical problems is: construct a kind of dielectric ceramic, its raw material comprises Ba 2 Ti 9 o 20 and B 2 o 3 , where B 2 o 3 The mass is Ba 2 Ti 9 o 20 4 to 8% of the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/468
Inventor 刘若鹏徐冠雄缪锡根安娜·玛丽亚·劳拉·博卡内格拉林云燕
Owner KUANG CHI INST OF ADVANCED TECH