Making method of high-toughness porous SiC ceramic complex part

A complex part, high toughness technology, applied in ceramic products, applications, household appliances, etc., can solve the problems of difficult to control pore shape, low porosity, low strength and toughness, etc., to achieve controllable structure and performance of parts, improve Parts performance, the effect of superior flexural strength

Inactive Publication Date: 2013-06-05
XI AN JIAOTONG UNIV
View PDF3 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of porous silicon carbide ceramics has problems such as relatively high sintering temperature, low porosity, difficult control

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
  • Making method of high-toughness porous SiC ceramic complex part
  • Making method of high-toughness porous SiC ceramic complex part
  • Making method of high-toughness porous SiC ceramic complex part

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example 1

[0042] See figure 1 , A method for preparing complex parts of high toughness porous SiC ceramics, including the following steps:

[0043] 1. Use light curing rapid prototyping technology to realize the manufacture of negative molds for complex parts; Figure 2-1~2-2 Shown is the filter element of the internal design topology network channel, image 3 For the prepared part molds and prototypes;

[0044] 2. Preparation of raw materials: mix phenolic resin and pore former (triethylene glycol) in a mass ratio of 50:80~100 to obtain resin slurry (hereinafter referred to as slurry);

[0045] 3. Ball mill the prepared slurry for 30 minutes, add curing agent (benzenesulfonyl chloride), stir in vacuum for 30 minutes to defoam, and inject the slurry into the resin mold in the vacuum injection machine, and then put the poured parts into Keep the temperature at 60°C for 8 hours in the drying box, and then increase the heating rate of 2°C / h to 160°C for curing. After the phenoli...

Example Embodiment

[0052] Example 2

[0053] A method for preparing complex parts of high toughness porous SiC ceramics includes the following steps:

[0054] 1. Use light curing rapid prototyping technology to realize the manufacture of negative molds for complex parts;

[0055] 2. Preparation of raw materials: mix phenolic resin and pore former (triethylene glycol) at a mass ratio of 50:60~70 to obtain resin slurry (hereinafter referred to as slurry);

[0056] 3. Ball mill the prepared slurry for 30 minutes, add curing agent (benzenesulfonyl chloride), stir in vacuum for 30 minutes to defoam, and inject the slurry into the resin mold in the vacuum injection machine, and then put the poured parts into Keep the temperature at 80°C for 5h in the drying box, and then increase the heating rate of 2°C / h to 180°C for curing. After the phenolic resin is completely cured, put the parts in a 20wt% potassium hydroxide-ethanol solution (ethanol: water = 2 :6), the photosensitive resin mold is corroded and remove...

Example Embodiment

[0063] Example 3

[0064] A method for preparing complex parts of high toughness porous SiC ceramics includes the following steps:

[0065] 1. Use light curing rapid prototyping technology to realize the manufacture of negative molds for complex parts;

[0066] 2. Preparation of raw materials: mix phenolic resin and pore former (triethylene glycol) at a mass ratio of 50:60~75 to obtain resin slurry (hereinafter referred to as slurry);

[0067] 3. Ball mill the prepared slurry for 30 minutes, add curing agent (benzenesulfonyl chloride), stir in vacuum for 30 minutes to defoam, and inject the slurry into the resin mold in the vacuum injection machine, and then put the poured parts into Keep the temperature at 80°C for 5h in the drying box, and then increase the heating rate of 1.5°C / h to 150°C for curing. After the phenolic resin is completely cured, put the parts in a 15wt% potassium hydroxide-methanol solution (ethanol: water = 2 :3), the photosensitive resin mold is corroded and rem...

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
The average particle sizeaaaaaaaaaa
Viscosityaaaaaaaaaa
The average particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a making method of a high-toughness porous SiC ceramic complex part. A light-cured rapid forming technology is adopted to make a resin die of the complex part, a high-residual carbon resin slurry is casted, cured and pyrolyzed to make a porous carbon perform, silicon-carbon reaction sintering and high-temperature vacuum silicon discharge technologies are adopted to make a porous SiC complex part, and matrix aperture internal SiC nanowires are made through a microwave heating process to realize the toughening purpose. The method has the advantages of free forming of the complex structure, uniform and controllable aperture, high specific surface area, high fracture toughness, high-temperature resistance, anti-oxidation and the like.

Description

technical field [0001] The invention belongs to the technical field of rapid manufacturing of parts with complex structures, and relates to a method for preparing complex parts of high-toughness porous SiC ceramics. Background technique [0002] Porous silicon carbide ceramics are very attractive among porous materials due to their low density, small thermal expansion coefficient, high temperature resistance, corrosion resistance, oxidation resistance and long service life. At present, the preparation of porous silicon carbide ceramics has problems such as relatively high sintering temperature, low porosity, difficult control of pore shape, small specific surface area, low strength and toughness, etc., which restrict the wide application of porous silicon carbide ceramic parts. Contents of the invention [0003] The problem to be solved by the present invention is to provide a method for preparing complex parts of high-toughness porous SiC ceramics. On the basis of rapid p...

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): C04B38/06C04B35/565C04B35/622
Inventor 鲁中良李涤尘陆峰曹继伟王嵽显卢秉恒
Owner XI AN JIAOTONG UNIV
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