Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Dielectric ceramic composition and electronic device

一种陶瓷组合物、电介质的技术，应用在固定电容器电介质、固定电容的零部件、陶瓷等方向，能够解决难产品实际使用、IR温度依赖性不好、介电常数高等问题，达到电容老化特性良好、低成本化、经时变化小的效果

Active Publication Date: 2009-10-14
TDK CORPARATION
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Although any of the above-mentioned patent documents 8 to 11 has a high dielectric constant, satisfies the X8R characteristics, and can be sintered in a reducing atmosphere, the IR temperature dependence from room temperature to high temperature is not good, and it is difficult to make a product. use

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dielectric ceramic composition and electronic device
  • Dielectric ceramic composition and electronic device
  • Dielectric ceramic composition and electronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] In the examples, samples of multilayer ceramic capacitors were produced through the procedures shown below.

[0149] Preparation of each paste

[0150] First, the starting materials (BaCO 3 , CaCO 3 、TiO 2 ) and the first to sixth subcomponent raw materials. In this example, carbonate (secondary component: MgCO 3 , the third sub-component: MnCO 3 ), using oxides in other raw materials (the first subcomponent: Y 2 o 3 、Dy 2 o 3 or Ho 2 o 3 , the fourth sub-component: Al 2 o 3 , the fifth secondary component: V 2 o 5 , the sixth secondary component: (Ba 0.6 Ca 0.4 ) SiO 3 (indicated as BCG in the table)). In addition, (Ba 0.6 Ca 0.4 ) SiO 3 by using a ball mill to BaCO 3 , CaCO 3 and SiO 2 It was wet-mixed for 16 hours, dried, sintered in air at a temperature of 1150° C., and wet-pulverized by a ball mill for 100 hours.

[0151] Next, the starting material for preparing the main component and the first subcomponent raw material (Y 2 o 3 、Dy 2...

Embodiment 2

[0207] Capacitor samples were produced in the same manner as in Example 1 except that the type and content of the fourth subcomponent raw material were changed as shown in Tables 4 to 7, and the same evaluation was performed.

[0208] Table 4

[0209]

[0210] Samples marked with [*] represent comparative examples of the present invention.

[0211] Samples marked with [**] represent reference examples of the present invention.

[0212] Among them, the composition of the main component, the composition and addition amount of the first to third, fifth, and sixth subcomponents are the same as those in Table 1.

[0213] The fourth subcomponent: Cr 2 o 3

[0214] table 5

[0215]

[0216] Samples marked with [*] represent comparative examples of the present invention.

[0217] Samples marked with [**] represent reference examples of the present invention.

[0218] Among them, the composition of the main component, the composition and addition amount of the first to...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The present invention provides a dielectric ceramic composition comprising: a main component comprising a dielectric oxide represented by the composition formula {(Me1-xCax)O}m (Zr1-yTiy)O2, wherein Me is one of Sr, Mg and Ba At least one of m, x and y has the relationship of 0.995≤m≤1.020, 0<x≤0.15, 0≤y≤1.00; contains the first subcomponent of R oxide (wherein R is a rare earth point element); The second subcomponent containing Mg oxide; the third subcomponent containing Mn oxide; wherein the ratio of each subcomponent to 100mol of the main component is: first subcomponent: 0.1 ~ 6mol; second subcomponent: 1 ~ 5mol ; The third subcomponent: 0.1 ~ 2.5mol; The dielectric ceramic composition also contains A oxide (wherein, A is at least one selected from the group of cationic elements with an effective ionic radius of 0.065nm ~ 0.085nm at the time of 6 coordination ) as the fourth subcomponent.

Description

technical field [0001] The present invention relates to a dielectric ceramic composition having reduction resistance, and electronic components such as multilayer ceramic capacitors using the dielectric ceramic composition. Background technique [0002] Multilayer ceramic capacitors as electronic components are required to have high dielectric constant, long life of insulation resistance IR, good DC bias characteristics (less change in dielectric constant over time), good temperature characteristics, especially In terms of applications, flat temperature characteristics are required under harsh conditions. In recent years, multilayer ceramic capacitors have begun to be used in various electronic devices such as engine electronic control units (ECUs), crank angle sensors, and anti-lock braking system (ABS) modules installed in automobile engines. Since these electronic devices are used to safely and stably perform engine control, drive control, and brake control, good tempera...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/46C04B35/462H01G4/12
CPCC04B2235/3454C04B2235/3206C04B2235/3201C04B2235/3215C04B35/4682C04B2237/704C04B2235/3217C04B2235/6582H01B3/12C04B2235/6584C04B2237/346C04B35/62685C04B2235/3262C04B2235/3224C04B2235/3287C04B2235/785C04B2235/3418B32B2311/22C04B2235/663C04B2235/3208C04B2235/3286C04B2237/405C04B35/638C04B35/64C04B35/62665C04B2235/3241C04B2235/3436C04B2235/6588C04B2235/3225B32B18/00H01G4/1245C04B35/01C04B35/49C04B35/03
Inventor 伊东和重佐藤阳村濑琢
Owner TDK CORPARATION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com