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Dielectric ceramic composition, electronic element and composite electric element

一种复合电子部件、陶瓷组合物的技术，应用在陶瓷、无机绝缘子等方向，能够解决Ag扩散、烧结性降低、内部电极减少等问题，达到抑制扩散、提高特性和可靠性、防止减少和/或变形的效果

Active Publication Date: 2014-08-06
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there is a disadvantage that the sinterability is lowered, and the Ag used in the internal electrodes is easily diffused in the element body, causing reduction and / or deformation of the internal electrodes, and adversely affecting the characteristics and reliability of electronic components.

Method used

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  • Dielectric ceramic composition, electronic element and composite electric element
  • Dielectric ceramic composition, electronic element and composite electric element
  • Dielectric ceramic composition, electronic element and composite electric element

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Embodiment 1

[0118] First, as the main component raw material constituting the dielectric ceramic composition raw material according to the present invention, SiO 2 -K 2 O-B 2 o 3 Glass-like (glass 1: glass transition point 510°C, average particle size 3.3 μm), quartz and amorphous silica. In addition, alumina and K 2 O-CaO-SiO 2 -B 2 o 3 Glass-like (glass 2: linear expansion coefficient is 118×10 -7 / ℃, the softening point is 650℃, and the average particle size is 0.8μm). In addition, as SiO 2 -K 2 O-B 2 o 3 Glass-like and K 2 O-CaO-SiO 2 -B 2 o 3 As the type glass, commercially available glass was used.

[0119] In this way, the above-mentioned raw materials were weighed so as to have the composition shown in Table 1, and wet mixing was performed for 40 hours by a ball mill. After wet mixing, the resulting slurry was dried with a drier to obtain a dielectric ceramic composition.

[0120] (Evaluation 1)

[0121] An acrylic resin-based binder was added to the obtained di...

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Abstract

A dielectric ceramic composition includes a main ingredient containing 40-65% by weight of SiO2-K2O-B2O3-based glass, 35-50% by weight of quartz, and the balance being amorphous silica; and a subsidiary ingredient containing 1.5-4% by weight of alumina and 5-20% by weight of K2O-MO-SiO2-B2O3-based glass ("MO" is at least one selected from a group consisting of CaO and SrO), relative to the main ingredient of 100 weight %.

Description

technical field [0001] The present invention relates to a dielectric ceramic composition that can be sintered at a low temperature and has a low relative permittivity, electronic components to which the dielectric ceramic composition is applied, and composite electronic components such as common mode filters. Background technique [0002] In recent years, with the miniaturization, high performance, and high frequency of electronic components used in the communication field such as mobile phones, LC composite electronic components or common mode filters that have high attenuation characteristics at high frequencies The demand for electronic components has increased rapidly. [0003] At present, Ni-Cu-Zn-based ferrite, non-magnetic Cu-Zn-based ferrite, or dielectric materials are used as magnetic materials in the coil part of LC composite electronic components or in the coil part of common mode filters. , but since the dielectric constant is a relatively high level of 8 to 15...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14
CPCC03C8/22C03C14/00C03C2214/20H01B3/12
Inventor 梅本周作铃木孝志佐藤英和高桥圣树近藤真一
Owner TDK CORPARATION
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