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A kind of fe-v gradient material and preparation method thereof

A gradient material and gradient layer technology, applied in jewelry and other fields, can solve the problems of poor mechanical properties of materials and pores in composite layers, and achieve the effects of low cost, dense surface structure and simple operation

Inactive Publication Date: 2018-01-30
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above analysis shows that the current Fe-V gradient materials have the following deficiencies: (1) The mechanical properties of the material are poor; (2) There are pores in the composite layer, etc.

Method used

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  • A kind of fe-v gradient material and preparation method thereof
  • A kind of fe-v gradient material and preparation method thereof
  • A kind of fe-v gradient material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: The preparation method of the Fe-V gradient material adopts the following specific process.

[0025] According to the NaCl:KCl:NaF molar ratio of 0.4:0.4:0.2, weigh it as the medium, V 2 O 3 The amount added accounts for 0.5% of the total mass of the molten salt system. The above four reagents are mixed evenly and then put into a crucible, placed in an electric furnace filled with Ar gas protection, heated to 700 ° C, and kept for 80 min. Put in V plate anode and low carbon steel sheet cathode, at 700℃, 120mA / cm 2 After electrodeposition was carried out for 60 min under the pulsed current density of 100 ℃, the cathode was taken out, boiled with boiling water to remove the molten salt attachment, and then rinsed with deionized water and alcohol in turn to obtain the Fe-V gradient material.

[0026] The Fe-V gradient material obtained in this example was analyzed by GDA750 glow discharge spectrometer and SEM, and the figure 1 It can be seen that the surfa...

Embodiment 2

[0027] Embodiment 2: The preparation method of the Fe-V gradient material adopts the following specific process.

[0028] According to the NaCl:KCl:NaF molar ratio of 0.35:0.35:0.3, take it as the medium, V 2 O 3 The amount added accounts for 1% of the total mass of the molten salt system. The above four reagents are mixed evenly and then put into a crucible, placed in an electric furnace filled with Ar gas protection, heated to 720 ° C, and kept for 100 min. Put V plate anode and mild steel sheet cathode at 720℃, 150mA / cm 2 After electrodeposition was carried out for 80 min under the pulsed current density of 100 °C, the cathode was taken out, boiled with boiling water to remove the molten salt attachment, and then rinsed with deionized water and alcohol in turn to obtain the Fe-V gradient material.

[0029] The Fe-V gradient material obtained in this example was analyzed by GDA750 glow discharge spectrometer and SEM, and the figure 2 It can be seen that the surfaces on b...

Embodiment 3

[0030] Embodiment 3: The preparation method of the Fe-V gradient material adopts the following specific process.

[0031] According to the NaCl:KCl:NaF molar ratio of 0.3:0.3:0.4, weigh it as the medium, V 2 O 3 The addition amount accounts for 1.5% of the total mass of the molten salt system. The above four reagents are mixed uniformly and then put into a crucible, and then placed in an electric furnace filled with Ar gas protection to heat up to 740 ° C, and the constant temperature time is 120 min. Put in V plate anode and mild steel sheet cathode, at 740℃, 200mA / cm 2 After electrodeposition was carried out for 100 min under the pulsed current density of 100 °C, the cathode was taken out, boiled with boiling water to remove the molten salt attachment, and then rinsed with deionized water and alcohol in turn to obtain the Fe-V gradient material.

[0032] The Fe-V gradient material obtained in this example was analyzed by GDA750 glow discharge spectrometer and SEM, and the ...

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Abstract

The invention discloses an Fe-V gradient material and a preparation method thereof. NaCl-KCl-NaF is used as a molten salt medium, V2O3 is used as a solute to configure a molten salt system; a steel plate is used as a cathode, and a metal V plate is used as an anode. The Fe-V gradient material can be obtained by DC pulse electrodeposition in a molten salt system. This method uses molten salt as the medium, and under the action of direct current, the Fe-V gradient material is prepared by one-step electrodeposition of V oxides; a smooth and smooth pure V layer can be obtained, and V is diffused in the low-carbon steel matrix. , Fe-V gradient materials containing pure V layers are actually obtained. The method adopts a molten salt system, the component raw materials are easy to obtain, the price is low, the cost is low, and the energy consumption is small; the production process is short, the operation is simple, the parameter control range is wide, and it is easy to realize. The method has the characteristics of fast gradient layer formation speed, short preparation time, freely controllable gradient layer thickness, compact material surface structure, simple process, etc., and the obtained gradient material has good thermal shock resistance and thermal fatigue resistance.

Description

technical field [0001] The invention relates to a gradient material and a preparation method thereof, in particular to a Fe-V gradient material and a preparation method thereof. Background technique [0002] Vanadium has the advantages of high melting point, good ductility and plasticity, and is widely used in modern industry for its very valuable physical and chemical properties and mechanical properties. Most of vanadium is used as additive and alloying element in ferrous metallurgy industry to prepare Special steel. Vanadium has become an indispensable element in the research and development of new steel grades in my country. There are more than 100 main steel grades containing vanadium in my country, which are widely used in construction machinery, aviation, aerospace, automobiles, high-rise buildings, railways, ships, transportation, etc. Oil (gas) pipelines, bridge manufacturing and other fields. In the chemical industry, vanadium compounds have been widely used in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/66C25D5/18C25D7/00
Inventor 李运刚齐艳飞周景一田薇王波戴志强刘建涛
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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