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Preparation method of TiSiN nano composite coating on surface of titanium alloy

A nanocomposite coating and titanium alloy technology, applied in metal material coating process, coating, gaseous chemical plating, etc., can solve the problem that the mechanical properties cannot meet the working requirements, the bonding strength between the coating and the substrate is not high, and the uniformity It can achieve the effect of excellent microstructural structure, good industrial application prospect and simple coating equipment

Inactive Publication Date: 2013-04-17
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The existing TiSiN composite coatings are generally used in the surface modification of cutting tools, and the reactive magnetron sputtering method is used. The coating hardness obtained by this method is relatively high, but the bonding strength between the coating and the substrate is not high. , the uniformity is not good, the mechanical properties sometimes cannot meet the work requirements, and it is easy to fall off during work

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of TiSiN nanocomposite coating on titanium alloy surface mainly comprises the following steps:

[0029] In the first step, put the titanium alloy sample into the sealed box of the laser surface treatment device;

[0030] The second step is to evacuate the sealed box through the air outlet connected to the vacuum generating device on the sealed box, and to feed nitrogen into the protective gas channel connected to the sealed box through the air inlet connected to the nitrogen source on the sealed box, so that The pure nitrogen atmosphere is maintained in the protective gas channel and the sealed box, and the speed of introducing nitrogen gas is 100L / min;

[0031] The third step is to turn on the laser connected to the protective gas channel. The laser beam emitted by the laser enters the sealed box through the protective gas channel and sweeps across the surface of the titanium alloy sample at a uniform speed. Ti reacts with nitrogen in the vacuum ...

Embodiment 2

[0036] The preparation method of TiSiN nanocomposite coating on titanium alloy surface mainly comprises the following steps:

[0037] In the first step, put the titanium alloy sample into the sealed box of the laser surface treatment device;

[0038] The second step is to evacuate the sealed box through the air outlet connected to the vacuum generating device on the sealed box, and to feed nitrogen into the protective gas channel connected to the sealed box through the air inlet connected to the nitrogen source on the sealed box, so that The pure nitrogen atmosphere is maintained in the protective gas channel and the sealed box, and the speed of introducing nitrogen gas is 55L / min;

[0039] The third step is to turn on the laser connected to the protective gas channel. The laser beam emitted by the laser enters the sealed box through the protective gas channel and sweeps across the surface of the titanium alloy sample at a uniform speed. Ti reacts with nitrogen in the vacuum t...

Embodiment 3

[0043] The preparation method of TiSiN nanocomposite coating on titanium alloy surface mainly comprises the following steps:

[0044] In the first step, put the titanium alloy sample into the sealed box of the laser surface treatment device;

[0045] The second step is to evacuate the sealed box through the air outlet connected to the vacuum generating device on the sealed box, and to feed nitrogen into the protective gas channel connected to the sealed box through the air inlet connected to the nitrogen source on the sealed box, so that The pure nitrogen atmosphere is maintained in the protective gas channel and the sealed box, and the speed of introducing nitrogen gas is 160L / min;

[0046] The third step is to turn on the laser connected to the protective gas channel. The laser beam emitted by the laser enters the sealed box through the protective gas channel and sweeps across the surface of the titanium alloy sample at a uniform speed. Ti reacts with nitrogen in the vacuum ...

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Abstract

The invention provides a preparation method of a TiSiN nano composite coating on the surface of titanium alloy, which belongs to the technical field of preparation of coating materials, and particularly relates to a preparation method of a TiSiN nanocrystalline superhard coating, which can improve the wear resisting property of a cladding layer through adding the Si element. In order to solve the technical problem, the technical scheme adopted by the invention is that the preparation method mainly comprises the following steps: firstly, placing a titanium alloy sample into a sealed box of a laser surface treatment device; secondly, vacuumizing the sealed box, pumping nitrogen into the sealed box and maintaining the pure nitrogen atmosphere; and thirdly, pumping SiH4 into the sealed box to form a TiSiN nano composite superhard coating under the high-energy beam laser action. The coating prepared by adopting the method has the advantages of high rigidity, strong bonding strength with a base body, excellent uniformity and the like.

Description

technical field [0001] The invention discloses a method for preparing a TiSiN nanocomposite coating on the surface of a titanium alloy, which belongs to the technical field of coating material preparation, and in particular relates to a method for preparing a TiSiN nanocrystalline superhard coating. Background technique [0002] Due to its outstanding advantages such as strong corrosion resistance, high strength, high heat resistance, and high biocompatibility, titanium alloys are widely used in various technical fields such as aerospace, chemical industry, metallurgy, nuclear energy, medical treatment, and atomic energy. However, its low hardness and poor wear resistance seriously affect the performance and application range of titanium alloys. Therefore, improving the surface hardness and wear resistance of titanium alloys has always been the focus of research and application of titanium alloys at home and abroad. [0003] In order to improve the performance of titanium a...

Claims

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Application Information

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IPC IPC(8): C23C16/34C23C16/48
Inventor 刘斌刘和平白培康杨亚琴王建宏李玉新任霁萍
Owner ZHONGBEI UNIV
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