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

A High Dielectric Constant np0 Type Dielectric Ceramic

A technology of high dielectric constant and dielectric ceramics, applied in the direction of fixed capacitor dielectrics, circuits, capacitors, etc., can solve the problems of high sintering temperature, achieve low sintering temperature, reduce production costs, and improve chemical stability.

Active Publication Date: 2022-02-25
李吉晓
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the capacity temperature coefficient of this system is a positive number, and a compensator with a negative capacity temperature coefficient is required, so the sintering temperature of this system is too high, so it needs to be improved

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
  • A High Dielectric Constant np0 Type Dielectric Ceramic
  • A High Dielectric Constant np0 Type Dielectric Ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of high dielectric constant NP0 type dielectric ceramics, comprising the following raw materials by weight: 5g of magnesium metatitanate (MgTiO 3 ), 5g of calcium titanate (CaTiO 3 ), 5g of titanium dioxide (TiO 2 ), 5g of neodymium trioxide (Nd 2 o 3 ), 50g of sintering aids and 5g of modified additives, the sintering aids are preferably boron oxide (B 2 o 3 ), the modification additive is preferably zirconium dioxide (ZrO 2 ).

[0031] Add grinding balls and ball milling media to the above mixed powder, wherein the mass ratio of the mixed powder, grinding balls and ball milling media is a ratio of 1:1:2, the grinding balls are zirconia ceramic balls, and the ball milling media is Deionized water: After the mixed powder, grinding balls and deionized water are ball milled and calcined, polyvinyl alcohol (PVA) with a mass percentage of 2% is added.

Embodiment 2

[0033] A kind of high dielectric constant NP0 type dielectric ceramics, comprising the following raw materials by weight: 100g of magnesium metatitanate (MgTiO 3 ), 60g of calcium titanate (CaTiO 3 ), 30g of titanium dioxide (TiO 2 ), 120g of neodymium trioxide (Nd 2 o 3 ), 60g of sintering aids and 60g of modified additives, the sintering aids are preferably bismuth oxide (Bi 2 o 3 ), the modification additive is preferably niobium pentoxide (Nb 2 o 5 ).

[0034] Add grinding balls and ball milling media to the above mixed powder, wherein the mass ratio of the mixed powder, grinding balls and ball milling media is a ratio of 1:1:2, the grinding balls are zirconia ceramic balls, and the ball milling media is Deionized water: After the mixed powder, grinding balls and deionized water are ball milled and calcined, polyvinyl alcohol (PVA) with a mass percentage of 2% is added.

Embodiment 3

[0036] A kind of high dielectric constant NP0 type dielectric ceramics, comprising the following raw materials by weight: 120g of magnesium metatitanate (MgTiO 3 ), 80g of calcium titanate (CaTiO 3 ), 50g of titanium dioxide (TiO 2 ), 180g of neodymium trioxide (Nd 2 o 3 ), 80g of sintering aids and 120g of modified additives, the sintering aids are preferably bismuth oxide (Bi 2 o 3 ), the modification additive is preferably niobium pentoxide (Nb 2 o 5 ).

[0037] Add grinding balls and ball milling media to the above mixed powder, wherein the mass ratio of the mixed powder, grinding balls and ball milling media is a ratio of 1:1:2, the grinding balls are zirconia ceramic balls, and the ball milling media is Deionized water: After the mixed powder, grinding balls and deionized water are ball milled and calcined, polyvinyl alcohol (PVA) with a mass percentage of 2% is added.

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

No PUM Login to View More

Abstract

The invention discloses a high dielectric constant NPO dielectric ceramic; a high dielectric constant NPO dielectric ceramic comprises magnesium metatitanate (MgTiO 3 )5‑250 parts, calcium titanate (CaTiO 3 )5‑150 parts, titanium dioxide (TiO 2 )5‑100 parts, neodymium trioxide (Nd 2 o 3 ) 5-350 parts, modified additives 5-200 parts and sintering aids 50-120 parts; the present invention has the advantages of very stable temperature coefficient, low sintering temperature, high dielectric constant and small dielectric loss.

Description

technical field [0001] The invention relates to the technical field of ceramic compositions, more specifically, it relates to a high dielectric constant NPO type dielectric ceramic. Background technique [0002] The dielectric materials in capacitors can be divided into two categories according to the temperature stability of capacity, namely Class I ceramic capacitors and Class II ceramic capacitors. Among them, X5R, X7R, X8R, Y5V and Z5U belong to Class II ceramics, Class II ceramics The dielectric constant of capacitors is generally greater than 1000, and its electrical performance is relatively stable. It is suitable for DC blocking, coupling, bypass, and medium and low frequency occasions that require high reliability, as well as occasions that do not require high capacity stability and loss; Compared with the above, NP0 belongs to Class I ceramics and has temperature compensation characteristics. The dielectric constant of Class I ceramic capacitors is generally less t...

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): C04B35/465C04B35/01C04B35/626C04B35/634C04B35/64H01B1/16H01G4/12H01G4/30
CPCC04B35/465C04B35/01C04B35/6261C04B35/63416C04B35/64H01B1/16H01G4/1227H01G4/30C04B2235/3206C04B2235/3208C04B2235/3236C04B2235/3232C04B2235/3224C04B2235/3298C04B2235/3251C04B2235/3217C04B2235/3244C04B2235/3409C04B2235/656
Inventor 李吉晓何建成李岩
Owner 李吉晓
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