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

Sol-gel method for preparing sub-micrometer level titanium carbide powder material

A technology of sol-gel method and titanium carbide powder is applied in the field of preparing sub-micron titanium carbide powder materials by sol-gel method, which can solve the problems of complex process flow, high production cost, unfavorable industrialized production and the like, and achieves the process flow Simple, low cost, easy to industrialize the effect

Active Publication Date: 2016-08-03
UNIV OF SCI & TECH BEIJING
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method has high production cost and complex technological process, which is unfavorable for industrialized production

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
  • Sol-gel method for preparing sub-micrometer level titanium carbide powder material
  • Sol-gel method for preparing sub-micrometer level titanium carbide powder material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Titanium dioxide, phenolic resin and methanol were mixed according to the molar ratio of 1:0.6:0.6, and stirred evenly by electromagnetic stirring, the stirring speed was 300 rpm, and the stirring time was 3 hours. Dry the mixed solution at 110° C. for 2 hours to obtain a titanium dioxide / phenolic resin precursor. The precursor was put into an alumina crucible, and under an argon protective atmosphere, the temperature was raised to 1600°C at a rate of 5°C / min, kept for 4 hours, and then lowered to room temperature at a rate of 5°C / min. % titanium carbide powder.

[0019] figure 1 is the X-ray diffraction pattern (XRD) of titanium dioxide / phenolic resin precursor, figure 2 (a) is the XRD pattern of the product when the carbothermal reduction temperature is 1600°C, which proves that the product is titanium carbide (PDF card number 65-8807) and there are no other impurity phases. figure 2 (b) is a scanning electron micrograph of titanium carbide. It can be ...

Embodiment 2

[0020] Example 2: Titanium dioxide, phenolic resin and methanol were mixed according to the molar ratio of 1:0.7:0.7, and stirred evenly by electromagnetic stirring, the stirring speed was 200 rpm, and the stirring time was 4 hours. The mixed solution was dried at 100° C. for 3 hours to obtain a titanium dioxide / phenolic resin precursor. The precursor was put into an alumina crucible, and under an argon protective atmosphere, the temperature was raised to 1500°C at a rate of 5°C / min, kept for 5 hours, and then lowered to room temperature at a rate of 5°C / min. % of titanium carbide powder, the particle size is about 500nm, and the size is uniform.

Embodiment 3

[0021] Example 3: Titanium dioxide, phenolic resin, and methanol were mixed according to a molar ratio of 1:0.7:0.7, and stirred evenly by electromagnetic stirring, with a stirring speed of 400 rpm and a stirring time of 2 hours. The mixed solution was dried at 90° C. for 4 hours to obtain a titanium dioxide / phenolic resin precursor. The precursor was put into an alumina crucible, and under an argon protective atmosphere, the temperature was raised to 1400°C at a rate of 5°C / min, kept for 6 hours, and then lowered to room temperature at a rate of 5°C / min. % of titanium carbide powder, the particle size is about 600nm, and the size is uniform.

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 sol-gel method for preparing a sub-micrometer level titanium carbide powder material. The preparation method comprises the following steps: evenly mixing common titanium dioxide, phenolic resin, and methanol according to a mole ratio of 1:0.5-0.8:1.9-3.05 at a room temperature, stirring, storing the mixture at a temperature of 70 to 110 DEG C for 2 to 4 hours to obtain a titanium dioxide / phenolic resin precursor; heating the precursor in a high temperature furnace, and storing the precursor at a temperature of 1300 to 1700 DEG C for 2 to 6 hours in an atmosphere of argon so as to obtain sub-micrometer level (200 nm to 1 [mu]m) titanium carbide powder. During the reaction process, phenolic resin is thermally degraded into amorphous carbon with a high activity, amorphous carbon wraps titanium dioxide powder to form a shell-core microscopic structure, thus the contact surface between reactants is greatly increased, and the carbon thermal reduction reactions are promoted. The provided method has the advantages that the raw materials are cheap, the sintering temperature of titanium carbide powder in industrial production is reduced, moreover, the sintering time is short, the technology is simple, and the method can be easily applied to industrial production.

Description

technical field [0001] The invention belongs to the field of preparation of ceramic materials, and in particular relates to a method for preparing a submicron titanium carbide powder material by a sol-gel method. Background technique [0002] Titanium carbide has a NaCl type cubic crystal structure, the unit cell parameter is 0.4327nm, and the space group is Fm3m. It has the characteristics of high melting point, high hardness, wear resistance and corrosion resistance, and also has good thermal conductivity, electrical conductivity and chemical stability. Therefore, it is widely used in composite ceramic materials, aerospace materials, cutting tools and wear-resistant materials. At present, the methods for preparing titanium carbide at home and abroad mainly include carbothermal reduction of TiO 2 method, direct reaction method, sol-gel method, microwave synthesis method, mechanical ball milling method and chemical vapor deposition method, etc. In industry, titanium dioxid...

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): C01B31/30
CPCC01P2002/72C01P2004/03C01P2004/62C01P2006/80
Inventor 张国华苟海鹏周国治
Owner UNIV OF SCI & TECH BEIJING
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com