Preparation process of YMnO3 dielectric ceramic and YMnO3 dielectric ceramic capacitor

A ceramic capacitor and preparation technology, applied in the direction of fixed capacitor dielectric, fixed capacitor parts, etc., can solve the problems of long sintering time, incomplete reaction, high sintering temperature of high-density ceramics, etc., and achieve low degree of particle agglomeration , Low production cost, and the effect of reducing the sintering temperature

Inactive Publication Date: 2013-02-06
HENAN UNIV OF SCI & TECH
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

YMnO 3 As a dielectric ceramic material, it has attracted widespread attention of researchers due to its special ferromagnetism and ferroelectricity. However, for YMnO 3 Although the research on the performance of ceramics is relatively common, its preparation technology is relatively lagging behind, and there are few researches on its preparation technology.
Traditional YMnO 3 Most of the ceramic preparation technology adopts the principle of solid-state

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
  • Preparation process of YMnO3 dielectric ceramic and YMnO3 dielectric ceramic capacitor
  • Preparation process of YMnO3 dielectric ceramic and YMnO3 dielectric ceramic capacitor
  • Preparation process of YMnO3 dielectric ceramic and YMnO3 dielectric ceramic capacitor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] The specific embodiments of the present invention are described in detail below: YMnO 3 The preparation process of dielectric ceramics includes the following steps:

[0027] Step 1. Weigh Y(NO) with a purity of 99.99% according to the molar ratio of 1:1 3 ) 3 ·6H 2 O and 99.5% Mn(CH 3 COO) 2 ·4H 2 O mix and put it into the container, add deionized water, and then use a magnetic stirrer to make it fully dissolved and evenly stirred, then adjust the concentration of the solution to 0.2mol / L, continue to stir for 4h, and then use it;

[0028] Step 2. Add 99% pure C in an equimolar amount with the total amount of metal ions in the solution to the solution obtained in step 1. 6 H 8 O 7 ·H 2 O, and adjust the pH value of the solution to 5-6 with ammonia water. After stirring for 24 hours, the solution was evaporated in an oil bath at 120°C to obtain a fluffy block solid. The obtained block solid was ground into powder and put into a crucible, heated to Keep it at 300°C for 3 hours,...

Example Embodiment

[0041] Example one

[0042] YMnO 3 The preparation process of dielectric ceramics includes the following steps:

[0043] Step 1. Weigh Y(NO) with a purity of 99.99% according to the molar ratio of 1:1 3 ) 3 ·6H 2 O and 99.5% Mn(CH 3 COO) 2 ·4H 2 O mix and put it into the container, add deionized water, and then use a magnetic stirrer to make it fully dissolved and evenly stirred, then adjust the concentration of the solution to 0.2mol / L, continue to stir for 4h, and then use it;

[0044] Step 2. Add 99% pure C in an equimolar amount with the total amount of metal ions in the solution to the solution obtained in step 1. 6 H 8 O 7 ·H 2 O, and adjust the pH value of the solution to 5 with ammonia water. After stirring for 24 hours, evaporate the solution through an oil bath at 120°C to obtain a fluffy block solid. Grind the obtained block solid into a powder and put it in a crucible, and heat to 300°C. After keeping it for 3 hours, cool to room temperature naturally and take out the obt...

Example Embodiment

[0053] Embodiment two

[0054] YMnO 3 The preparation process of dielectric ceramics is characterized in that it comprises the following steps:

[0055] Step 1. Weigh Y(NO) with a purity of 99.99% according to the molar ratio of 1:1 3 ) 3 ·6H 2 O and 99.5% Mn(CH 3 COO) 2 ·4H 2 O mix and put it into the container, add deionized water, and then use a magnetic stirrer to make it fully dissolved and evenly stirred, then adjust the concentration of the solution to 0.2mol / L, continue to stir for 4h, and then use it;

[0056] Step 2. Add 99% pure C in an equimolar amount with the total amount of metal ions in the solution to the solution obtained in step 1. 6 H 8 O 7 ·H 2 O, and adjust the pH of the solution to 6 with ammonia water. After stirring for 24 hours, evaporate the solution through an oil bath at 120°C to obtain a fluffy block solid. Grind the obtained block solid into a powder and put it into a crucible, and heat to 300°C. After heat preservation for 3 hours, then naturally cool ...

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 relates to a preparation process and application of ceramic, in particular to a preparation process of YMnO3 dielectric ceramic and a YMnO3 dielectric ceramic capacitor. In order to solve the problems of complicated procedures, poor provenance of finished products and the like in an existing preparation process of YMnO3 dielectric ceramic, the YMnO3 dielectric ceramic is prepared by the aid of a sol-gel method and by means of mixing and dissolving ingredients, adding corresponding catalysts or complexing agents, drying, pyrolyzing, grinding, presintering and firing. The obtained YMnO3 dielectric ceramic can be prepared to the YMnO3 dielectric ceramic capacitor and other ceramic products.

Description

technical field [0001] The present invention relates to a kind of preparation method and application of dielectric ceramics, specifically a kind of YMnO 3 Preparation Technology of Dielectric Ceramics and YMnO 3 Dielectric ceramic capacitors. Background technique [0002] Multiferroic materials not only possess a variety of single ferroic properties (such as ferroelectricity, ferromagnetism, and ferroelasticity), but also can produce some new functions through the coupling and synergy of ferroic properties, which greatly broadens the application of multiferroic materials. range, and thus received widespread attention. (M. Fiebig et al, Phys. Rev. Lett. 2000, 84, 5620; Joonghoe D et al, Appl. Phys. Lett. 2005, 87, 252504; F. Schrettle et al, Phys. Rev. Lett. 2009, 102, 207208) Hexagonal rare earth manganese oxide is a single-phase multiferroic material (ferroelectric magnet) integrating ferroelectricity and antiferromagnetism. One of the hot issues that have received wide...

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
IPC IPC(8): C04B35/622C04B35/50H01G4/12
Inventor 张超许玉洁李同伟康大伟李立本
Owner HENAN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap