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Method for synthesizing titanium carbide powder by high frequency induction heat explosion

A technology of titanium carbide micropowder and high-frequency induction, which is applied in the field of preparation of titanium carbide micropowder material synthesized by high-frequency induction thermal explosion, to achieve the effect of high degree of micronization, simple process and uniform distribution

Inactive Publication Date: 2014-12-24
TONGREN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and deficiencies of the traditional technology for preparing titanium carbide micropowder, and provide a new and simple preparation method of titanium carbide micropowder particles, which can be directly prepared by the chemical thermal explosion method in the combustion synthesis technology. Nanoscale polycrystalline titanium carbide powder particles effectively solve the technical defects in the production of existing polycrystalline titanium carbide micropowder material, thus forming a titanium carbide micropowder material with simple process, energy saving and high efficiency, high degree of micronization and uniform distribution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Implementation Example 1: 40wt% Al-Ti-C

[0020] The ternary mixed powder of 40wt% Al-Ti-C was thoroughly mixed by ball milling and pressed into a cylindrical prefabricated compact with a diameter of 20×15mm and a relative density of 65±3%, and then the compact was placed in an induction chamber filled with Ar gas. In the water-cooled induction coil in the furnace, the SIT high-frequency induction power supply provides energy to ignite the overall reaction of the agglomerate. After being energized and heated for a few seconds, the overall agglomerate undergoes a violent exothermic combustion reaction. The entire reaction is completed quickly in an instant, and the product is Loose and expanded layered structure. The identification results of the XRD test show that the main crystal phases of the thermal explosion synthesis product are TiC and Al, followed by a trace amount of Al 3 C 4 Mutually. FE-SEM observation results show that the average particle size of the synt...

Embodiment 2

[0021] Implementation Example 2: 50wt% Al-Ti-C

[0022] The ternary mixed powder of 50wt% Al-Ti-C is fully mixed by ball milling and then pressed into a cylindrical prefabricated compact with a diameter of 20×15mm and a relative density of 65±3%. The compact is placed in an induction furnace filled with Ar gas In the water-cooled induction coil, the SIT high-frequency induction power supply provides energy to ignite the overall reaction of the agglomerate. After being energized and heated for a few seconds, the overall agglomerate undergoes a violent exothermic combustion reaction. The entire reaction is completed in an instant, and the product is loose. And the expanded layered structure. The identification results of the XRD test show that the main crystal phases of the thermal explosion synthesis product are TiC and Al, followed by a trace amount of Al 3 C 4 Mutually. FE-SEM observation results show that the average particle size of the synthesized TiC particles is 100-2...

Embodiment 3

[0023] Implementation Example 3: 10wt% Zn-Ti-C

[0024] The ternary mixed powder of 10wt% Zn-Ti-C is fully mixed by ball milling and pressed into a cylindrical prefabricated compact with a diameter of 20×15mm and a relative density of 65±3%. The compact is placed in an induction furnace filled with Ar gas In the water-cooled induction coil, the SIT high-frequency induction power supply provides energy to ignite the overall reaction of the agglomerate. After being energized and heated for a few seconds, the overall agglomerate undergoes a violent exothermic combustion reaction. The entire reaction is completed in an instant, and the product is loose. And the expanded layered structure. The identification results of the XRD test show that the thermal explosion synthesis product is mostly TiC, and there are also traces of Zn, Ti and Zn 2 Ti 4 c. From the observation results of FE-SEM, it is found that the TiC particles synthesized by thermal explosion are finer, and the averag...

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Abstract

The invention discloses a method for synthesizing titanium carbide powder by high frequency induction heat explosion. The method comprises the following steps: by taking Ti powder and carbon black as basic raw materials and using Al powder and Zn powder as additive raw materials, fully mixing mixed powders with a certain proportion and then pressing to form cylindrical briquettes; carrying out chemical reaction synthesis in atmosphere filled with an Ar gas; igniting the briquettes by adopting a high-frequency induction coil with heavy current, thereby finally obtaining most of TiC powder particles. According to the method, the technical defects in production of the existing polycrystalline titanium carbide powder particles are effectively solved, so as to form a titanium carbide powder material which is simple in process, energy-saving, high in efficiency, high in micronization degree and even in distribution.

Description

technical field [0001] The invention belongs to the technical field of new transition metal carbide ceramic powder materials, and in particular relates to a preparation method for synthesizing titanium carbide micropowder materials by using high-frequency induction thermal explosion under a protective atmosphere. Background technique [0002] Titanium carbide (ZrC) belongs to the face-centered cubic crystal system, with stable chemical and physical properties, high melting point, hardness and strength, excellent wear resistance, corrosion resistance and thermal shock resistance, and good electrical conductivity, so It is a potential hard phase of particle-reinforced metal matrix composites for the application of anti-abrasive wear. It is mainly used to prepare cermets, heat-resistant alloys and hard alloys, and is widely used in wear-resistant materials and cutting tools. , Abrasive molds, melting metal crucibles and powder metallurgy and other fields. In addition, the comp...

Claims

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Application Information

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IPC IPC(8): C04B35/56C04B35/626
Inventor 宋谋胜龙禹冉茂武张杰田昌海
Owner TONGREN UNIV
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