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COG dielectric ceramic material for low-temperature sintering thin-media multilayer ceramic capacitor

A low-temperature sintering, multi-layer ceramic technology is applied in the field of preparation methods and multi-layer ceramic capacitors manufactured with the dielectric ceramic material, which can solve the temperature stability of the ceramic material, withstand voltage characteristics and the adverse effects of internal electrode matching, and the sintering furnace pollution, etc.

Active Publication Date: 2015-12-23
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The addition of a large number of auxiliary materials for sintering may cause pollution to the sintering furnace, and may also have adverse effects on the temperature stability, pressure resistance characteristics and internal electrode matching of the porcelain material

Method used

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  • COG dielectric ceramic material for low-temperature sintering thin-media multilayer ceramic capacitor
  • COG dielectric ceramic material for low-temperature sintering thin-media multilayer ceramic capacitor
  • COG dielectric ceramic material for low-temperature sintering thin-media multilayer ceramic capacitor

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Embodiment Construction

[0017] Refer to Table 1 to and Figures 1 to 4 The present invention is described further, a kind of low-temperature sintering thin-dielectric multilayer ceramic capacitor uses COG quality ceramic material, and its composition comprises main component (Ca 1-x Sr x ) z Zr y o 3， Where 0.2≤x≤0.4, 0.90≤y≤1.0; 0.9850≤z≤1.0030 and additive composition Al 2 o 3 , MnCO 3 , MgO, TiO 2 , SiO 2 、BaCO 3 , Two or more compounds in ZnO.

[0018] The molar content ratio of the components is: (Ca 1-x Sr x ) z Zr y o 3 1mol, Al 2 o 3 0-0.01mol, MnCO 3 0.02-0.1mol, MgO 0-0.01mol, SiO 2 0.02-0.1mol, TiO 2 0-0.005mol, BaCO 3 0-0.01mol for ZnO and 0-0.01mol for ZnO.

[0019] The (Ca 1-x Sr x ) z Zr y o 3 The manufacturing method adopts hydrothermal synthesis.

[0020] The (Ca 1-x Sr x ) z Zr y o 3 The average particle diameter of the main component material is 50-250 nm.

[0021] The (Ca 1-x Sr x ) z Zr y o 3 It is obtained by calcining at a temperature of 95...

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Abstract

The invention discloses a low-temperature sintering thin-media nickel electrode dielectric ceramic material. The compositions of the dielectric ceramic material comprise a principal component and additives, wherein the principal component is (Ca1-xSrx)zZryO3, wherein x is more than or equal to 0.2 and less than or equal to 0.4, y is more than or equal to 0.90 and less than or equal to 1.0, and Z is more than or equal to 0.985 and less than or equal to 1.003; the additives are at least two or more compounds of Al2O3, MnCO3, MgO, TiO2, SiO2, BaCO3 and ZnO. The material is in line with COG characteristics of American EIA (Electronic Industries Association) standard, is small in particles, uniform in size distribution, good in dispersibility, and favorable in dielectric property. The material is low in sintering temperature, and uniform and compact in grain sizes when being used for manufacturing a multilayer ceramic capacitor, can realize the thickness of a dielectric layer to be less than 5mum, and is favorable in matching with a nickel internal electrode.

Description

technical field [0001] The present invention relates to a kind of preparation method of dielectric ceramic material and the multilayer ceramic capacitor manufactured with this dielectric ceramic material, particularly relate to a kind of low-temperature sintered thin dielectric dielectric ceramic material, in H 2 or N 2 / H 2 After sintering in the atmosphere, the dielectric properties are excellent, and it is suitable for the manufacture of thin dielectric nickel electrode C0GMLCC. Background technique [0002] The development of science and technology and the continuous progress of electronic information technology have promoted the continuous development of chip multilayer ceramic capacitors (MLCC) to large capacity and miniaturization, and the miniaturization of MLCC has put forward higher requirements for reliability. The NPOBME-MLCC dielectric ceramic material currently used in the market is mainly nickel electrodes, and its sintering temperature is generally around 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622
Inventor 杨彬张兵司留启付清波冯兆泉
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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