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A kind of cog quality ceramic material for low temperature sintering thin dielectric multilayer ceramic capacitor

A multi-layer ceramic, low-temperature sintering technology, applied in ceramics, inorganic insulators, etc., can solve the problems of sintering furnace pollution, temperature stability of ceramic materials, withstand voltage characteristics, and adverse effects of internal electrode matching.

Active Publication Date: 2020-03-06
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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  • A kind of cog quality ceramic material for low temperature sintering thin dielectric multilayer ceramic capacitor
  • A kind of cog quality ceramic material for low temperature sintering thin dielectric multilayer ceramic capacitor
  • A kind of cog quality ceramic material for low temperature sintering thin dielectric 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 9...

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Abstract

The invention discloses a low-temperature sintered thin dielectric nickel electrode dielectric ceramic material. The composition of the dielectric ceramic material includes main components and additives. The main component: (Ca 1‑x Sr x ) z Zr y o 3 , where 0.2≤x≤0.4, 0.90≤y≤1.0; 0.985≤Z≤1.003; additive composition: Al 2 o 3 , MnCO 3 , MgO, TiO 2 , SiO 2 、BaCO 3 , At least two or more compounds in ZnO. The material conforms to the COG characteristics of the American EIA standard, with small particles, uniform particle size distribution, good dispersion, and good dielectric properties. When the material is used to make multilayer ceramic capacitors, the sintering temperature is low, the crystal grains are uniform and dense, the thickness of the dielectric layer can be less than 5 μm, and the matching property with the nickel inner electrode is good.

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 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 COG MLCC with thin dielectric nickel electrodes. 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. The miniaturization of MLCC puts forward higher requirements for reliability. The NPO BME-MLCC dielectric ceramic material currently used in the market is mainly nickel electrodes, and its sintering temperature is generally around 1280 ° C. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/12C04B35/48C04B35/622
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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