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Preparation method of vanadium nitride

A technology of vanadium nitride and thermal method, which is applied in the direction of nitrogen-metal/silicon/boron binary compounds, etc., can solve the problem of high energy consumption in high-temperature sintering, achieve the effects of improving quality, eliminating greenhouse gas emissions, and reducing consumption

Inactive Publication Date: 2014-09-03
JINAN SHUNYUAN NEW MATERIAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a vanadium nitride low temperature sintering process for the shortcomings of high temperature sintering energy consumption, large amount of greenhouse gas emission, further increase of product nitrogen content and carbon impurities in the production process of vanadium nitride. Liquid phase synthesis method

Method used

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  • Preparation method of vanadium nitride
  • Preparation method of vanadium nitride
  • Preparation method of vanadium nitride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 0.245 g of vanadium trichloride, dissolve it in 70 ml of water, stir the solution until uniform and clear, add 6 ml of concentrated ammonia water, stir well, put it into the reaction kettle, and keep it warm at 200°C for 12 hours to form a precipitate and clear liquid , the solid obtained by filtration is vanadium nitride, and the filtrate continues to be recycled. figure 1 For the X-ray diffraction pattern of prepared vanadium nitride, it can be analyzed that the synthesized substance is VN from the figure, figure 2 It is a scanning electron microscope image of the synthesized material. It can be seen from the figure that the material is mainly composed of vanadium and nitrogen. The synthesized material has a nitrogen content of 21.1% and a vanadium content of 78.8%.

Embodiment 2

[0023] Weigh 0.38 g of vanadium nitrate, dissolve it in 40 ml of water, stir the solution until it is uniform and clear, add 4 ml of hydrazine, stir it evenly, put it into the reaction kettle, keep it at 180°C for 10 hours, form a precipitate and clear liquid, and filter to obtain The solid is vanadium nitride, and the filtrate continues to be recycled. image 3 It is the X-ray diffraction pattern of the prepared material, from which it can be analyzed that the synthesized substance is VN. The synthesized material has a nitrogen content of 21% and a vanadium content of 79%.

Embodiment 3

[0025]Weigh 0.36 g of vanadium nitrate, dissolve it in 40 ml of ethanol, add 1 g of urea at the same time, stir the solution until it is uniform and clear, put it in a reaction kettle, keep it at 190°C for 10 hours, form a precipitate and a clear liquid, and filter to obtain vanadium nitride . The synthesized material has a nitrogen content of 21%, a vanadium content of 78%, and an impurity content of 1%. The main component of the waste industry obtained from synthetic materials is a mixture of ethanol and ether. After distillation and separation, ethanol continues to be recycled. Ether is an important chemical raw material and can be used by other industries.

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Abstract

The invention belongs to the technical field of metal materials and in particular relates to a preparation method of a high-performance steel and iron material additive-vanadium nitride. According to the technical scheme, the method comprises the following steps: preparing vanadium nitride by adopting a liquid-phase solvothermal method, wherein a liquid phase adopts a water solution or an alcohol solvent; a vanadium source is selected from bivalent, trivalent or tetravalent chloride of vanadium, sulfate, nitrate and acetate; and a nitrogen source is selected from ammonia gas, urea, hydrazine, ammonium chloride, ammonium carbonate, ammonium acetate and ammonium sulfate. According to the method, carbon or hydrogen does not need to be adopted as a reducing agent in the preparation process, so that the discharge of greenhouse gas in the preparation process is avoided and the impurity carbon element in vanadium nitride is eliminated; the alloy synthesis temperature is lower than 400 DEG C; and the nitrogen content of vanadium nitride synthesized by adopting the method maximally and theoretically can be 21%.

Description

technical field [0001] The invention belongs to the technical field of metal materials, in particular to a preparation method of vanadium nitride, a high-performance iron and steel material additive. Background technique [0002] Vanadium nitrogen alloy, the main component of which is vanadium carbonitride, is a new type of alloy additive that can replace ferrovanadium for the production of microalloyed steel. The addition of vanadium nitride to steel can improve the comprehensive mechanical properties of steel such as strength, toughness, ductility and thermal fatigue resistance, and make the steel have good weldability. When the same strength is achieved, the addition of vanadium nitride saves 30-40% of the amount of vanadium added, thereby reducing the cost. At present, vanadium-nitrogen alloy is a blank made of vanadium pentoxide, carbon powder, activator and other raw materials. Under the protection of normal pressure and nitrogen atmosphere, the vanadium-nitrogen allo...

Claims

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Application Information

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IPC IPC(8): C01B21/06
Inventor 黄太仲于洁玫孙国新汤琦种道皇
Owner JINAN SHUNYUAN NEW MATERIAL TECH
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