Ceramic capacitor medium and preparation method thereof

A ceramic capacitor and dielectric technology, applied in the field of non-metallic materials, can solve the problem of high dielectric loss, achieve the effect of improving withstand voltage performance and reducing dielectric loss

Inactive Publication Date: 2013-08-14
CHANGZHOU JIAGUAN ELECTRONICS
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Problems solved by technology

[0005] The dielectric-temperature characteristics of barium titanate ceramics show that the dielectric constant is very high; but its dielectric loss is also very high, up to 0.01-0.02, which is a great weakness of barium titanate ceramics

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  • Ceramic capacitor medium and preparation method thereof
  • Ceramic capacitor medium and preparation method thereof

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Embodiment Construction

[0019] Below in conjunction with attached table, the present invention is described in detail.

[0020] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying tables and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] Table 1 shows the formulations of two samples of the present invention. BaTiO3 ceramics, replacement modified materials and doping modified materials are ground and mixed evenly, and then put into an alumina crucible and kept at 1330 degrees Celsius for 2.5 hours.

[0022] Table 1

[0023]

[0024] In the table:

[0025] Mix 1 for BaTiO 3 with BaSnO 3 synthetic materials;

[0026] Mix 2 to Bi 2 o 3 with TiO 2 synthetic material.

[0027] Table 2 is the dielectric properties of each fo...

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Abstract

The invention discloses a ceramic capacitor medium. The ceramic capacitor medium comprises BaTiO3, and is characterized by also comprising a BaTiO3 and BaSnO3 synthetic material, a Bi2O3 and TiO2 synthetic material, a displacement modified material and a doped modified material. A method for preparing the ceramic capacitor medium is characterized by comprising the following steps of: grinding and uniformly mixing BaTiO3 ceramic, the displacement modified material and the doped modified material; and then putting the mixture into an alumina crucible, and preserving heat for 2.3 to 2.7 hours at the temperature of 1,300 to 1,350 DEG C. The ceramic capacitor medium has the beneficial effects that the dielectric-temperature characteristic of a new material accords with technical indexes of a microwave oven double-hole capacitor; the dielectric loss of the material is reduced; and the voltage resistance, particularly the alternating voltage resistance, of the medium is improved.

Description

technical field [0001] The invention relates to the field of non-metallic materials, in particular to a piezoelectric ceramic capacitor medium. Background technique [0002] With the development of science and technology in human society, the application of electronic equipment develops very rapidly, and the number of electronic equipment doubles every 4-5 years. At the same time, the "electromagnetic pollution" of electronic equipment has become the fourth largest pollution in society. Countries have adopted Legal and technical measures are intended to quickly change this situation. It can be imagined that the demand for this type of anti-electromagnetic radiation filter components will increase significantly, and the technical quality requirements for ceramic capacitors in filter components are also getting higher and higher. [0003] At present, the dual-hole normal capacitors for microwave filter circuits have been imported from Japan for a long time, and Japan has block...

Claims

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Application Information

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IPC IPC(8): C04B35/468C04B35/622
Inventor 曹亚峰
Owner CHANGZHOU JIAGUAN ELECTRONICS
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