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Sintering additive composition, dielectric ceramic composition, and their applications

A technology for dielectric ceramics and compositions is applied in the field of multilayer ceramic capacitors and sintering additive compositions, which can solve the problems of reducing the effective electrode area size and decreasing the reliability of multilayer ceramic capacitors, so as to improve microscopic uniformity and improve reliability. sexual effect

Active Publication Date: 2016-03-02
DONGGUAN HUAKE ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the development of thinner layered ceramic capacitors, the internal electrode layer will shrink due to high-temperature sintering and reduce the area size of the effective electrodes, which will reduce the reliability of laminated ceramic capacitors.

Method used

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  • Sintering additive composition, dielectric ceramic composition, and their applications
  • Sintering additive composition, dielectric ceramic composition, and their applications
  • Sintering additive composition, dielectric ceramic composition, and their applications

Examples

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Embodiment

[0037] "Preparation of sinter additive composition"

[0038] Silicon dioxide (SiO 2 ), boron trioxide (B 2 o 3 ) and tin dioxide (SnO 2 ), tungsten trioxide (WO 3 ) and molybdenum trioxide (MoO 3 ) is the modified component uniformly mixed into powder, placed in a high temperature environment for heat treatment, and ground and pulverized by a ball mill to form spherical particles with a particle diameter of about 50 to 100 nm, which is used as the sintering additive composition of the present invention. Wherein, the ingredients and content (mole) added in each preparation example are shown in Table 1.

[0039] Table 1: Components and contents of sintering additive compositions in each preparation example

[0040]

[0041] In Preparation Example 1 to Preparation Example 4, the overall sintering composition is 100 moles, the content of silicon dioxide is between 60 moles and 85 moles, and the content of diboron trioxide is between 10 moles and 35 moles. between, and th...

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Abstract

The invention relates to a sintering additive composition comprising silica, boron trioxide, and at least two modification components selected from the group comprising tungsten trioxide, molybdenum trioxide and tin dioxide. Calculated according to a total amount of the sintering additive composition as 100mol, the content of silica is 60-85mol, the content of boron trioxide is 10-35mol, and the content of the at least two modification components is 0.1-5mol. Also, the invention relates to a dielectric ceramic composition comprising the sintering additive composition. The invention also relates to a laminated ceramic capacitor comprising the dielectric ceramic composition. The composition has an excellent low-temperature sintering property, such that the reliability of the capacitor can be improved.

Description

technical field [0001] The invention relates to a sintering additive composition, a dielectric ceramic composition and a laminated ceramic capacitor containing the composition. Background technique [0002] With the vigorous development of the electronics industry in recent years, MLCCs have rapidly developed in the direction of miniaturization, thinner layers, and higher capacity of MLCCs. In a laminated ceramic capacitor, internal electrode layers are stacked in a dielectric ceramic composition and subjected to a sintering step to obtain a ceramic sintered body in which dielectric layers and internal electrode layers are stacked on each other. [0003] However, in the development of thinner laminated ceramic capacitors, the internal electrode layer will shrink due to high-temperature sintering and reduce the area size of the effective electrodes, reducing the reliability of laminated ceramic capacitors. Therefore, in order to improve the continuity of the internal electro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/12C04B35/63C04B35/468
Inventor 蔡聪智萧富昌柯汉洲
Owner DONGGUAN HUAKE ELECTRONICS
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