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

A kind of high entropy zirconate ceramics and preparation method thereof

A zirconate and ceramic technology, applied in the field of ceramic materials and their preparation, can solve the problems of low density of high-entropy ceramic sintered samples, no high-entropy zirconate ceramics, difficult application of high-entropy ceramics, etc., and achieve great application potential , Excellent material properties, the effect of filling the research gap

Active Publication Date: 2021-12-24
ZHENGZHOU UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the main problems of high-entropy ceramics are the low density of sintered samples, the existence of a second phase, and the inability to prepare bulk materials with pure phases and close to the theoretical density, which makes the performance test deviate, because it cannot truly reflect the intrinsic properties of high-entropy ceramics. , which brings difficulties to the application of high-entropy ceramics
Moreover, there is no relevant report on the preparation of high-entropy zirconate ceramics, which is also a problem that those skilled in the art need to solve urgently

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 kind of high entropy zirconate ceramics and preparation method thereof
  • A kind of high entropy zirconate ceramics and preparation method thereof
  • A kind of high entropy zirconate ceramics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-entropy zirconate ceramic, the chemical formula of which is (CaSrBa)ZrO 3 , high-entropy zirconate ceramic (CaSrBa)ZrO 3 Has a single phase structure.

[0031] Preparation of High-Entropy Zirconate Ceramics (CaSrBa)ZrO 3 method, including the following steps:

[0032] (1) Three kinds of zirconate CaZrO 3 , SrZrO 3 and BaZrO 3 Powder, according to the molar ratio of CaZrO 3 : SrZrO 3 : BaZrO 3 =1:1:1 to form mixed powder;

[0033] (2) Put the mixed powder described in step (1) into a polytetrafluoroethylene tank, add anhydrous ethanol and zirconia grinding balls, and the mass ratio of the balls to the material is 1:1; use a planetary ball mill to wet mixing , the rotating speed is 300 r / min, and the ball milling time is 4 h to obtain a uniformly mixed suspension;

[0034] (3) Transfer the suspension in step (2) into an eggplant-shaped bottle and fully dry the evenly mixed suspension with a rotary evaporator at a drying temperature of 40-60 o C, the dryi...

Embodiment 2

[0037] A high-entropy zirconate ceramic, the chemical formula of which is (CaSrBa)ZrO 3 , high-entropy zirconate ceramic (CaSrBa)ZrO 3 Has a single phase structure.

[0038] Preparation of High-Entropy Zirconate Ceramics (CaSrBa)ZrO 3 method, including the following steps:

[0039] (1) Three kinds of zirconate CaZrO 3 , SrZrO 3 and BaZrO 3 Powder, according to the molar ratio of CaZrO 3 : SrZrO 3 : BaZrO 3 =1:1:1 to form mixed powder;

[0040] (2) Put the mixed powder described in step (1) into a polytetrafluoroethylene tank, add anhydrous ethanol and zirconia grinding balls, and the mass ratio of the balls to the material is 1:1; use a planetary ball mill to wet mixing , the rotating speed is 300 r / min, and the ball milling time is 4 h to obtain a uniformly mixed suspension;

[0041] (3) Transfer the suspension in step (2) into an eggplant-shaped bottle and fully dry the evenly mixed suspension with a rotary evaporator at a drying temperature of 40-60 o C, the dryi...

Embodiment 3

[0044] A high-entropy zirconate ceramic, the chemical formula of which is (CaSrBa)ZrO 3 , high-entropy zirconate ceramic (CaSrBa)ZrO 3 Has a single phase structure.

[0045] Preparation of High-Entropy Zirconate Ceramics (CaSrBa)ZrO 3 method, including the following steps:

[0046] (1) Three kinds of zirconate CaZrO 3 , SrZrO 3 and BaZrO 3 Powder, according to the molar ratio of CaZrO 3 : SrZrO 3 : BaZrO 3 =1:1:1 to form mixed powder;

[0047] (2) Put the mixed powder described in step (1) into a polytetrafluoroethylene tank, add anhydrous ethanol and zirconia grinding balls, and the mass ratio of the balls to the material is 1:1; use a planetary ball mill to wet mixing , the rotating speed is 300 r / min, and the ball milling time is 4 h to obtain a uniformly mixed suspension;

[0048] (3) Transfer the suspension in step (2) into an eggplant-shaped bottle and fully dry the evenly mixed suspension with a rotary evaporator at a drying temperature of 50 °C. o C, the dry...

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
Vickers hardnessaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high-entropy zirconate ceramic and a preparation method thereof. The high-entropy zirconate ceramic has a single-phase structure, and its chemical molecular formula is (CaSrBa)ZrO 3 . In the present invention, CaZrO is firstly ground by planetary ball 3 , SrZrO 3 and BaZrO 3 The powder is wet-milled and mixed, then the uniformly mixed raw materials are fully dried in a rotary evaporator, and finally the uniformly mixed raw materials are sintered separately to realize the preparation of high-entropy ceramic blocks. The present invention successfully synthesized high-entropy zirconate ceramics (CaSrBa)ZrO for the first time 3 , characterized by a number of techniques, the synthesized high-entropy zirconate ceramic (CaSrBa)ZrO 3 It has higher density and hardness, and lower thermal conductivity than the three raw materials.

Description

technical field [0001] The invention belongs to the technical field of ceramic materials and preparation thereof, and in particular relates to a high-entropy zirconate ceramic and a preparation method thereof. Background technique [0002] In 2004, Yeh et al. broke through the shackles of traditional alloy systems for the first time and proposed the concept of high-entropy alloys. The atomic percentage of elements is between 5% and 35%. High-entropy alloys have thermodynamic high-entropy effects, structural lattice distortion effects, kinetic slow diffusion effects, and performance "cocktail" effects, which make high-entropy alloys exhibit excellent wear resistance, high Strength, good thermal stability at high temperature, good fracture resistance and other characteristics. [0003] The strategy of new alloy design has achieved unprecedented success. Based on the concept of high entropy, researchers have started the study of high entropy ceramics. In the document "Entrop...

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): C04B35/48C04B35/622C04B35/645
CPCC04B35/48C04B35/622C04B35/645C04B2235/602C04B2235/656C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96C04B2235/9607
Inventor 李明亮王海龙张锐周延春邵刚邱帅航朱锦鹏刘雯范冰冰卢红霞许红亮
Owner ZHENGZHOU UNIV
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