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

Alumina ceramic and preparation method thereof

A technology of alumina ceramics and alumina, which is applied in the field of alumina ceramics and its preparation, can solve the problems of low flexural strength of 75 alumina ceramics, achieve the effects of reducing migration and relaxation, low sintering temperature, and improving surface finish

Inactive Publication Date: 2019-12-13
陕西澳华瓷业科技有限公司
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flexural strength of 75 alumina ceramics prepared by the formula of the prior art is low, so it is necessary to develop a new formula of 75 alumina ceramics to improve the flexural strength while maintaining a low sintering temperature

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
  • Alumina ceramic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The alumina ceramics of this embodiment is made of the following raw materials in parts by weight: 40 parts of alumina, 13 parts of calcined kaolin, 2 parts of bentonite, 2 parts of heavy magnesium carbonate, 2 parts of calcium carbonate, 2.3 parts of barium carbonate, 0.3 parts of glycerin 0.3 parts of emulsifying wax, 0.8 parts of titanium dioxide, 5 parts of zirconium dioxide and 0.5 parts of lanthanum oxide.

[0027] This embodiment also provides a method for preparing the above-mentioned alumina ceramics, the method comprising the following steps:

[0028] Step 1. Mix alumina, calcined kaolin, bentonite, heavy magnesium carbonate, calcium carbonate, barium carbonate, glycerin, emulsified wax, titanium dioxide, zirconium dioxide and lanthanum oxide to obtain a mixture, and add ball mill and water to the mixture After ball milling for 2.5 hours, adding a mass fraction of 10% polyvinyl alcohol aqueous solution, and then ball milling for 0.5 hours, passing through a 60...

Embodiment 2

[0037] The alumina ceramics of this embodiment is made of the following raw materials in parts by weight: 36 parts of alumina, 9 parts of calcined kaolin, 1 part of bentonite, 1 part of heavy magnesium carbonate, 1 part of calcium carbonate, 3 parts of barium carbonate, 0.5 parts of glycerin 0.5 parts of emulsifying wax, 1.0 parts of titanium dioxide, 8 parts of zirconium dioxide and 0.4 parts of lanthanum oxide.

[0038] This embodiment also provides a method for preparing the above-mentioned alumina ceramics, the method comprising the following steps:

[0039] Step 1. Mix alumina, calcined kaolin, bentonite, heavy magnesium carbonate, calcium carbonate, barium carbonate, glycerin, emulsified wax, titanium dioxide, zirconium dioxide and lanthanum oxide to obtain a mixture, and add ball mill and water to the mixture After ball milling for 3 hours, add a polyvinyl alcohol aqueous solution with a mass fraction of 10%, and then ball mill for 0.5 h, pass through a 60-mesh sieve to...

Embodiment 3

[0045] The alumina ceramics of this embodiment is made of the following raw materials in parts by weight: 46 parts of alumina, 16 parts of calcined kaolin, 3 parts of bentonite, 3 parts of heavy magnesium carbonate, 3 parts of calcium carbonate, 1 part of barium carbonate, 0.1 parts of glycerin 0.1 part of emulsifying wax, 0.5 part of titanium dioxide, 2 parts of zirconium dioxide and 0.6 part of lanthanum oxide.

[0046] This embodiment also provides a method for preparing the above-mentioned alumina ceramics, the method comprising the following steps:

[0047] Step 1. Mix alumina, calcined kaolin, bentonite, heavy magnesium carbonate, calcium carbonate, barium carbonate, glycerin, emulsified wax, titanium dioxide, zirconium dioxide and lanthanum oxide to obtain a mixture, and add ball mill and water to the mixture After ball milling for 2 hours, add a mass fraction of 10% polyvinyl alcohol aqueous solution, then ball mill for 0.5 h, pass through a 60-mesh sieve to obtain a s...

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
densityaaaaaaaaaa
flexural strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides an aluminum oxide ceramic. The aluminum oxide ceramic is prepared from aluminum oxide, calcined kaolin, bentonite, heavy magnesium carbonate, calcium carbonate, barium carbonate, glycerol, emulsified wax, titanium dioxide, zirconium dioxide and lanthanum oxide. The invention also provides a preparation method for the aluminum oxide ceramic. The preparation method comprises the following steps: mixing all the raw materials, adding water, carrying out ball milling, adding an aqueous polyvinyl alcohol solution with a mass fraction of 10%, continuing ball milling to obtain slurry, carrying out spray granulation to obtain a ceramic material, carrying out dry pressing molding, and performing roasting to obtain the aluminum oxide ceramic. According to the invention, Al2O3-SiO2-MgO-CaO composed of aluminum oxide, kaolin, bentonite, heavy magnesium carbonate and calcium carbonate is used as a basic system; barium carbonate, zirconium dioxide and lanthanum oxide are addedto serve as grain inhibitors; titanium dioxide serves as a solid solvent; glycerol and emulsified wax serve as dispersing agents; so the aluminum oxide ceramic with high bending strength is prepared.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, and in particular relates to an alumina ceramic and a preparation method thereof. Background technique [0002] Alumina exists widely in nature and is one of the most practically used oxide materials. Alumina-based ceramic materials have excellent properties such as high strength, high hardness, wear resistance, high temperature resistance, corrosion resistance, high electrical insulation performance and low dielectric loss, so they have important application value in structural ceramics, electronic ceramics and bioceramics . Its raw materials have a wide range of sources and low prices. Cao Nanping and others used 60% alumina, 20% kaolin, 10% porcelain stone, and 10% alkaline earth metal mineral solvent as raw materials to prepare 75 alumina ceramics, and explored the effect of the amount of alkaline earth metal minerals on the ceramic properties. The experimental res...

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 Applications(China)
IPC IPC(8): C04B35/10C04B35/622C04B35/626
CPCC04B35/10C04B35/622C04B35/62695C04B2235/3206C04B2235/3208C04B2235/3215C04B2235/3227C04B2235/3232C04B2235/3244C04B2235/349C04B2235/602C04B2235/6562C04B2235/6567C04B2235/661C04B2235/77C04B2235/96
Inventor 何舜姬军成刘见弟蒲忠敏高晓磊杨翊筠高帅
Owner 陕西澳华瓷业科技有限公司
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