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Dielectric ceramic composite and manufacturing method of electronic element thereof

The technology of a dielectric ceramic and its manufacturing method, which is applied in the field of dielectric ceramic composition, can solve the problems of product reliability reduction, etc., and achieve the effect of improving dielectric strength, good reliability, and fine and uniform ceramic crystal grains

Inactive Publication Date: 2013-03-13
CHAOZHOU THREE CIRCLE GRP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In the MLCC manufacturing process, a thinner dielectric layer thickness and a larger number of internal electrode layers are required to achieve the same capacity of the product, which will reduce the reliability of the product

Method used

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  • Dielectric ceramic composite and manufacturing method of electronic element thereof
  • Dielectric ceramic composite and manufacturing method of electronic element thereof

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the examples and accompanying tables.

[0023] As shown in Table 1, the present invention discloses a dielectric ceramic composition that can be co-fired with copper. 3 , 0.1molSrCO 3 , 0.8 mol CaCO 3 , 0.1 molTiO 2 , 0.9 mol ZrO 2 ratio for mixing and dispersing. After the dispersion is dried and sieved, it is calcined at 1150°C to obtain the main material Mg 0.1 Sr 0.1 Ca 0.8 Ti 0.1 Zr 0.9 o 3 , and then add the modification additives and sintering aids listed in Table 1 in a predetermined proportion. The modified additive is MnCO 3 , MgCO 3 , Re 2 o 3 One or more of them, where Re 2 o 3 For rare earth oxides, sintering aids include BaCO 3 , CaCO 3 , SiO 2 , Li 2 CO 3 , B 2 o 3 , Al 2 o 3 one or more of them.

[0024]Table 1: Formula table of main materials, modification additives and sintering aids

[0025]

[0026] After the above formulations of porcelain powde...

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Abstract

The invention discloses a dielectric ceramic composite and a manufacturing method of an electronic element thereof. The dielectric ceramic composite comprises a principal crystalline phase, a modified additive and a sintering aid. The structural formula of the principal crystalline phase is (Mg[gamma]Sr[alpha]Ca(1-alpha-gamma))m(Ti[beta]Zr[1-beta])O3, wherein 0 <= alpha <=1, 0 <= beta <=1, 0 <= gamma <= 1 and 0.9 <= m <= 1.1,. The modified additive is one or more of MnCo3, MgCO3 and Re2O3, wherein Re2O3 is a rare earth oxide, and the sintering aid comprises one or more of BaCO3, CaCO3, SiO2, Li2CO3, B2O3 and Al2O3. The dielectric ceramic composite provided by the invention meets the media characteristics of COG (Chip On Glass), the dielectric constant is between 20-30 and an ROHS (Restriction of Hazardous Substances) demand is satisfied. An MLCC (Multiplayer Ceramic Chip Capacitor) prepared by the dielectric ceramic material is lower in dielectric loss, and excellent in dielectric constant temperature coefficient and dielectric frequency characteristic.

Description

technical field [0001] The invention relates to a dielectric ceramic composition capable of co-firing with copper and other base metals and a method for making electronic components. Background technique [0002] Multilayer chip ceramic capacitor (MLCC for short) is a kind of chip capacitor suitable for SMT surface mounting, and it must be used in almost all electronic complete machines. Especially mobile communication products, computers, digital cameras, high-definition large-screen color TVs, MP4, DVD players and automotive electronic products, the demand for MLCC products is increasing day by day. With the expansion of the functions of electronic products, multilayer chip ceramic capacitors are developing in the direction of miniaturization, large capacity, high specific capacity, high frequency, multi-function, and low loss. Among them, high frequency and low loss are One of the key points of its development. When the application frequency and capacity of the capacito...

Claims

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Application Information

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IPC IPC(8): C04B35/49C04B35/622
Inventor 马艳红张磊
Owner CHAOZHOU THREE CIRCLE GRP
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