Method for producing nano-sized vanadium carbide powder

A production method and technology of vanadium carbide, which is applied in the field of producing nano-vanadium carbide powder, can solve the problems of high cost and complex process of vanadium carbide powder, and achieve good dispersion effect

Active Publication Date: 2015-04-08
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the process of

Method used

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  • Method for producing nano-sized vanadium carbide powder
  • Method for producing nano-sized vanadium carbide powder

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Experimental program
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Effect test

Embodiment 1

[0018] Weigh 0.1 mol of ammonium metavanadate, 0.6 mol of ammonium nitrate, 0.02 mol of citric acid, and 0.15 mol of glucose and dissolve them in distilled water to prepare a solution, and heat the solution on a temperature-controllable electric furnace. The solution is decomposed after volatilization and concentration to obtain a precursor powder. The precursor powder is reacted in a furnace at 1200° C. under a nitrogen atmosphere for 4 hours to obtain a nano vanadium carbide powder.

Embodiment 2

[0020] Weigh 0.1 mol of ammonium metavanadate, 0.6 mol of ammonium nitrate, 0.08 mol of citric acid, and 0.15 mol of glucose and dissolve them in distilled water to prepare a solution, and heat the solution on a temperature-controllable electric furnace. The solution is decomposed after volatilization and concentration to obtain a precursor powder, and the precursor powder is reacted in a furnace at 1300° C. under the reaction conditions of a vacuum atmosphere for 2 hours to obtain a nano vanadium carbide powder.

Embodiment 3

[0022] Weigh 0.1 mol of ammonium metavanadate, 0.6 mol of ammonium nitrate, 0.08 mol of glycine, and 0.15 mol of glucose and dissolve them in distilled water to prepare a solution, and heat the solution on a temperature-controllable electric furnace. The solution is decomposed after volatilization and concentration to obtain a precursor powder, and the precursor powder is reacted in a furnace at 800° C. under the reaction conditions of argon atmosphere for 5 hours to obtain nano vanadium carbide powder.

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Abstract

The invention relates to a method for producing nano-sized vanadium carbide powder, belonging to the technical field of preparing ceramic powder. The method comprises the following processes: (1) mixing a vanadium source, a carbon source and an auxiliary into a solution according to a certain proportion; (2) heating the solution, so that the solution is volatilized, concentrated and decomposed to obtain precursor powder containing the vanadium source and the carbon source; and (3) reacting the precursor powder for 1-5 hours at the temperature of 700-1300 DEG C under certain atmosphere. The method is simple in technology, low in cost, and easy to industrialize, and the obtained vanadium carbide powder has a particle size of less than 50nm, and good dispersity.

Description

technical field [0001] The invention belongs to the technical field of ceramic powder preparation, and in particular relates to a method for producing nano vanadium carbide powder. Background technique [0002] Vanadium carbide is one of the most important functional materials among transition metal carbides, with a series of excellent properties, such as high strength, high hardness, high temperature resistance, acid and alkali resistance, wear resistance, small specific gravity, good stability and good Electrical and thermal conductivity, etc. Vanadium carbide can improve various comprehensive mechanical properties of steel, and has been widely used in the steel industry. Studies have shown that when smelting high-strength low-alloy steel and other steel types, adding vanadium carbide can improve the comprehensive properties of steel such as corrosion resistance, wear resistance, ductility, strength, toughness and fatigue resistance, making the steel have a strong Weldab...

Claims

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Application Information

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IPC IPC(8): C01B31/30C04B35/56C04B35/626
Inventor 秦明礼曹知勤顾月茹曲选辉吴昊阳刘志伟
Owner UNIV OF SCI & TECH BEIJING
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