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

Preparation Method of Gel Casting Molding of Metal/Ceramic Gradient Material in Alternating Magnetic Field

A technology of alternating magnetic field and gradient material, applied in the field of material preparation, to achieve the effects of wide application range, cost reduction and process simplification

Inactive Publication Date: 2017-10-27
CHINA JILIANG UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the above-mentioned methods have great limitations

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 Method of Gel Casting Molding of Metal/Ceramic Gradient Material in Alternating Magnetic Field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1) Preparation of mold

[0048] A plexiglass mold is used, and the inner cavity of the mold is a disc with a height of 15mm and a diameter of 15mm;

[0049] 2) Slurry preparation

[0050] Metallic Cu particles with a particle size of 0.1 μm and ZrO particles with a particle size of 0.1 μm 2 The ceramic particles are mixed into a mixed powder according to the mass ratio of 0.1:1; the organic monomer acrylamide and the crosslinking agent methylenebisacrylamide are dissolved in deionized water at a weight ratio of 6:1, and the mass fraction of organic matter is 10%. The premix solution; the mixed powder is added to the premix solution, and the dispersant ammonium polyacrylate is added at the same time. The content of the dispersant agent is 0.05% of the mass of the slurry. Ball milling in a ball mill for 1 hour, ultrasonic dispersion treatment for 1 minute, to obtain a dispersed slurry, slurry The volume content of solid phase in medium is 50%;

[0051] Step 3) Injectio...

Embodiment 2

[0057] 1) Preparation of mold

[0058] A plaster mold is used, and the inner cavity of the mold is a disc with a height of 15mm and a diameter of 15mm;

[0059] 2) Slurry preparation

[0060] Mix metal Al particles with a particle size of 1 μm and SiC ceramic particles with a particle size of 0.1 to 1000 μm at a mass ratio of 1:1 to form a mixed powder; Dissolve it in deionized water at a weight ratio of 8:1 to prepare a premixed solution with an organic mass fraction of 15%; add the mixed powder to the premixed solution, and add the dispersant SD-38 at the same time, and the content of the dispersant is 0.1% of the mass of the slurry , ball milling in a ball mill for 2h, ultrasonic dispersion treatment for 3min, to obtain a dispersed slurry, the solid phase volume content in the slurry is 60%;

[0061] Step 3) Injection molding in alternating magnetic field

[0062] Add the initiator ammonium persulfate solution occupying 1% of the organic monomer amount and the catalyst t...

Embodiment 3

[0067] 1) Preparation of mold

[0068] The wooden mold is used, and the inner cavity of the mold is a disc with a height of 15mm and a diameter of 15mm;

[0069] 2) Slurry preparation

[0070] Metallic Ag particles with a particle size of 10 μm and SiO with a particle size of 10 μm 2 The ceramic particles are mixed into a mixed powder at a mass ratio of 0.1:1; the organic monomer vinylpyrrolidone and the crosslinking agent methylene bisacrylamide are dissolved in deionized water at a weight ratio of 12:1, and the mass fraction of the organic matter is 20% premix solution; add the mixed powder into the premix solution, and add dispersant JA-281 at the same time, the dispersant content is 0.20% of the mass of the slurry, ball mill in a ball mill for 5 hours, and ultrasonically disperse for 5 minutes to obtain a dispersed slurry. The solid phase volume content in the slurry is 70%;

[0071] Step 3) Injection molding in alternating magnetic field

[0072] Add the initiator amm...

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
sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a gel casting preparation method for metal / ceramic gradient materials in an alternating magnetic field and belongs to the field of material preparation. The method includes the steps that firstly, a mold is prepared; secondly, after metal powder and ceramic powder are mixed with water or non-aqueous solvents according to a certain proportion, mixtures are stirred in a ball mill and made into slurry which is evenly dispersed, and casting is performed; thirdly, the alternating magnetic field is applied outside the mold, current intensity is 0.1-20 A, current frequency is 102-105 Hz, and acting time lasts for 1-20 min; fourthly, gelling, drying and sintering are performed. The method has the advantages that by changing the current intensity, the current frequency and the acting time of the magnetic field, gradient materials in which different components are distributed can be obtained; procedures for preparing the gradient materials through a mature ceramic gel-casting method forming technology are simplified, cost is reduced, and performance is improved.

Description

technical field [0001] The invention relates to a gel injection molding preparation method of a metal / ceramic gradient material in an alternating magnetic field, and belongs to the field of material preparation. Background technique [0002] Ceramic materials are widely used in electronics, machinery, national defense and other industrial fields due to their unique properties such as high hardness, high wear resistance, high temperature resistance, and stable chemical properties. However, ceramic materials are brittle and have poor mechanical properties after sintering, making it difficult to machine. The molding methods of ceramic materials can generally be divided into two categories: dry method and wet method. In contrast, the wet forming process has the advantages of simple equipment, uniform composition of the formed body, less defects, and easy forming of complex-shaped parts, etc., and has strong practicability. However, there are some problems in the traditional we...

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): B22F3/22
Inventor 彭晓领李静杨艳婷徐靖才王攀峰金红晓金顶峰洪波王新庆葛洪良
Owner CHINA JILIANG 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