Surface alloying method for high current pulse electron beam irradiation TC4 titanium alloys

A technology of electron beam irradiation and surface alloying, which is applied in the field of titanium alloy surface alloying, can solve the problems of poor wear resistance and low hardness of TC4 titanium alloy, so as to slow down the oxidation rate, improve the oxidation resistance and increase the strength Effect

Inactive Publication Date: 2018-12-14
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the two main problems of low hardness and poor wear resistance of TC4 titanium alloy, the purpose of the present invention is to provide a surface alloying modifi

Method used

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  • Surface alloying method for high current pulse electron beam irradiation TC4 titanium alloys
  • Surface alloying method for high current pulse electron beam irradiation TC4 titanium alloys
  • Surface alloying method for high current pulse electron beam irradiation TC4 titanium alloys

Examples

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Example Embodiment

[0028] Example 1

[0029] (1) Preparation of alloying modified layer:

[0030] The first step is to select annealed industrial TC4 titanium alloy bars and use a wire cutting machine to make the samples into Φ12×5mm samples.

[0031] Use 150, 400, 800, 1000, 1500, 2000 and 2500 mesh metallographic sandpaper to grind the surface of the sample and then polish it. Among them, the polishing agent is a diamond polishing agent with a particle size of 0.5 μm, which is finally used for ultrasonic cleaning with acetone and absolute ethanol for use.

[0032] In the second step, the Cr powder and the organic binder are mixed uniformly at a ratio of 9g / 100mL to prepare a slurry, and finally the slurry is evenly coated on the surface of the sample after ultrasonic cleaning to form a coating layer, the thickness of the coating layer is 78μm, dry in the air.

[0033] The third step is to fix the sample with the coating layer facing up, and place it on the "HOPE-1" type pulsed electron beam device for...

Example Embodiment

[0038] Example 2

[0039] (1) Preparation of alloying modified layer:

[0040] The first step is to select annealed industrial TC4 titanium alloy bars and use a wire cutting machine to make the samples into Φ12×5mm samples.

[0041] Use 150, 400, 800, 1000, 1500, 2000 and 2500 mesh metallographic sandpaper to grind the surface of the sample and then polish it. Among them, the polishing agent selects a diamond polishing agent with a particle size of 0.5 μm, and finally uses acetone and anhydrous ethanol to ultrasonically clean it for later use.

[0042] In the second step, the Cr powder and the organic binder are mixed uniformly at a ratio of 9g / 100mL to prepare a slurry, and finally the slurry is evenly coated on the surface of the sample after ultrasonic cleaning to form a coating layer, the thickness of the coating layer is 78μm, dry in the air.

[0043] The third step is to fix the sample with the coating layer facing up, and place it on the "HOPE-1" type pulsed electron beam devic...

Example Embodiment

[0048] Example 3

[0049] (1) Preparation of alloying modified layer:

[0050] The first step is to select annealed industrial TC4 titanium alloy bars and use a wire cutting machine to make the samples into Φ12×5mm samples.

[0051] Use 150, 400, 800, 1000, 1500, 2000 and 2500 mesh metallographic sandpaper to grind the surface of the sample and then polish it. Among them, the polishing agent selects a diamond polishing agent with a particle size of 0.5 μm, and finally uses acetone and anhydrous ethanol to ultrasonically clean it for later use.

[0052] In the second step, the Cr powder and the organic binder are uniformly mixed at a ratio of 9g / 100mL to prepare a slurry, and finally it is uniformly coated on the surface of the sample after ultrasonic cleaning to form a coating layer, the thickness of the coating layer is 78μm , Dry in the air.

[0053] The third step is to fix the sample with the coating layer facing up, and place it on the "HOPE-1" type pulsed electron beam device fo...

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Abstract

The invention relates to a treatment method for titanium alloy surface alloying and particularly relates to a surface alloying method for high current pulse electron beam irradiation TC4 titanium alloys. According to the method disclosed by the invention, the sample surface is subjected to alloying treatment by adopting novel energetic beam surface modification technology-high current pulse electron beams, and by adjusting the injection energy, pulse width, irradiation times and other parameters, the sample surface can be modified in a wide range so as to enable the surface performance to reach an optimized state. According to the energetic beam instantaneous action with extremely high energy, processes of shock heating freezing and directional freezing simultaneously occur on the coatingand matrix surfaces, so that the coating element and the matrix are fully and uniformly mixed so as to perform metallurgical bonding, and an alloying layer with special performance and uniform component distribution is further formed on the surface.

Description

technical field [0001] The invention relates to a treatment method for surface alloying of titanium alloy. Specifically, a layer of alloyed layer with high wear resistance and excellent corrosion resistance is prepared on the surface of TC4 titanium alloy through the combination of pre-coating and high-current pulsed electron beam irradiation technology, which belongs to the surface modification of metal materials. technical field. Background technique [0002] TC4(Ti 6 al 4 V) alloy is a medium-strength α+β-type two-phase titanium alloy, due to its good comprehensive properties, such as high strength, no ferromagnetism, low density, good corrosion resistance, excellent processability and good biocompatibility . Therefore, TC4 titanium alloy is widely used in aerospace, ship and navigation, biomedicine, automobile manufacturing and other fields. However, in practical applications, there are still some problems related to surface properties, such as low hardness, poor we...

Claims

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Application Information

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IPC IPC(8): C23C24/10
CPCC23C24/106
Inventor 杨洋姚欣雯李绍伟葛瑞泽关庆丰吕鹏
Owner JIANGSU UNIV
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