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Dielectric ceramic composition and multilayer ceramic electronic component having the same

A technology of dielectric ceramics and composites, which is applied in the field of multilayer ceramic electronic components, and can solve problems such as the reduction of dielectric constant

Pending Publication Date: 2020-12-29
SAMSUNG ELECTRO MECHANICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, barium titanate (BaTiO 3 ) has a Curie temperature of only 125°C, and therefore, there is a limit to the sharp drop in dielectric constant above this temperature
Therefore, a method of suppressing the decrease in dielectric constant at the Curie temperature or higher by adding an excess amount of rare earth to the composition has been proposed, but in this case, the generation of pyrochlore second phase will is the problem

Method used

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  • Dielectric ceramic composition and multilayer ceramic electronic component having the same
  • Dielectric ceramic composition and multilayer ceramic electronic component having the same
  • Dielectric ceramic composition and multilayer ceramic electronic component having the same

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Embodiment Construction

[0020] The following detailed description is provided to assist the reader in gaining an overall understanding of the methods, devices and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent to those of ordinary skill in the art. The order of operations described herein is merely an example and is not limited to the order of operations set forth herein, but other than operations that must occur in a certain order, changes may be made that would be apparent to those of ordinary skill in the art. . Also, descriptions of functions and constructions that are well known to one of ordinary skill in the art may be omitted for increased clarity and conciseness.

[0021] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided so that this...

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Abstract

The present invention provides a dielectric ceramic composition. The dielectric ceramic composition includes a base material main component of barium titanate and a subcomponent. A microstructure of the dielectric ceramic composition after sintering includes a first grain having a Ca content of less than 3.5 at % and a second grain having a Ca content of 3.5 to 13.5 at %, and an area ratio of thesecond grain to an area of the total grains is 70% to 95%.

Description

[0001] This application claims Korean Patent Application No. 10-2019-0078009 filed with the Korean Intellectual Property Office on June 28, 2019 and Korean Patent Application No. 10-2019-0094914 filed with the Korean Intellectual Property Office on August 5, 2019 Benefit of priority of the patent application, the disclosure of which is hereby incorporated by reference in its entirety. technical field [0002] The present disclosure relates to a dielectric ceramic composition and a multilayer ceramic electronic assembly having the same. Background technique [0003] Electronic components using ceramic materials, such as capacitors, inductors, piezoelectric elements, varistors, or thermistors, include a ceramic body formed using a ceramic material, internal electrodes formed in the ceramic body, and internal electrodes provided on the surface of the ceramic body. to connect the outer electrodes to the inner electrodes. [0004] Among ceramic electronic components, a multilaye...

Claims

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Application Information

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IPC IPC(8): C04B35/468H01G4/12H01G4/30
CPCC04B35/4682H01G4/1227H01G4/30C04B2235/3208C04B2235/3267C04B2235/3239C04B2235/3206C04B2235/3224C04B2235/3225C04B2235/3418H01G4/1209C04B2235/80C04B2235/3262C04B2235/652C04B2235/6582C04B2235/663C04B2235/6567C04B2235/6025C04B2237/346C04B2237/68C04B2235/3272C04B2235/3279C04B2235/3241C04B2235/3275C04B2235/3281C04B2235/3284
Inventor 尹硕晛南灿熙全松济崔畅学
Owner SAMSUNG ELECTRO MECHANICS CO LTD
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