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Method for realizing molybdenum alloying of surface through irradiating TC4 titanium alloy by electron beam

An electron beam irradiation, titanium alloy technology, applied in the field of titanium alloy surface modification and metal material surface modification, can solve the problem of low energy utilization rate of laser surface alloying technology, low production efficiency of ion beam implantation, complex and expensive implantation system and other problems, to achieve the effect of short cycle, low cost and simple operation process

Inactive Publication Date: 2019-03-08
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, thermal spraying, ion beam implantation, and laser surface alloying technologies have all made some progress on titanium alloys. However, the bonding strength of thermal spraying is low and there are certain pores. The production efficiency of ion beam implantation is low and the implantation system is complex and expensive. , the laser surface alloying technology has problems such as low energy utilization rate and high equipment operation cost

Method used

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  • Method for realizing molybdenum alloying of surface through irradiating TC4 titanium alloy by electron beam
  • Method for realizing molybdenum alloying of surface through irradiating TC4 titanium alloy by electron beam
  • Method for realizing molybdenum alloying of surface through irradiating TC4 titanium alloy by electron beam

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Alloy layer preparation:

[0033] In the first step, the annealed industrial TC4 titanium alloy bar is selected, and the bar is cut into a sample of Φ10×4mm by wire electric discharge cutting.

[0034] The surface of the sample was polished with metallographic sandpaper. The types of SiC sandpaper used are 360, 800, 1000, 1500, 2000 mesh in turn, and the polishing agent is Cr 2 o 3 Aqueous solution, and finally use acetone and absolute ethanol to ultrasonically clean it for later use.

[0035] In the second step, 10g pure Mo powder (purity is 99.9wt%, particle size is 200 mesh) and 100ml organic binder (in the organic binder, the volume ratio of nitrovarnish and acetone is 1:2) Stir, and finally spray it on the surface of the sample to be irradiated, with a spray thickness of 100 μm, and dry it in a vacuum drying oven at room temperature for 12 hours.

[0036] The third step is to fix the sample to be irradiated on the stage, and use the "HOPE-1" high-current pu...

Embodiment 2

[0042] (1) Alloy layer preparation:

[0043] In the first step, the annealed industrial TC4 titanium alloy bar is selected, and the bar is cut into a sample of Φ10×4mm by wire electric discharge cutting.

[0044] The surface of the sample was polished with metallographic sandpaper. The types of SiC sandpaper used are 360, 800, 1000, 1500, 2000 mesh in turn, and the polishing agent is Cr 2 o 3 Aqueous solution, and finally use acetone and absolute ethanol to ultrasonically clean it for later use.

[0045] In the second step, 10g pure Mo powder (purity is 99.9wt%, particle size is 200 mesh) and 100ml organic binder (in the organic binder, the volume ratio of nitrovarnish and acetone is 1:2) Stir, and finally spray it on the surface of the sample to be irradiated, the sprayed layer is 100 μm, and dry it in a vacuum drying oven at room temperature for 12 hours.

[0046] The third step is to fix the sample to be irradiated on the stage, and use the "HOPE-1" high-current pulsed ...

Embodiment 3

[0052] (1) Alloy layer preparation:

[0053] In the first step, the annealed industrial TC4 titanium alloy bar is selected, and the bar is cut into a sample of Φ10×4mm by wire electric discharge cutting.

[0054] The surface of the sample was polished with metallographic sandpaper. The types of SiC sandpaper used are 360, 800, 1000, 1500, 2000 mesh in turn, and the polishing agent is Cr 2 o 3 Aqueous solution, and finally use acetone and absolute ethanol to ultrasonically clean it for later use.

[0055] In the second step, 10g pure Mo powder (purity is 99.9wt%, particle size is 200 mesh) and 100ml organic binder (in the organic binder, the volume ratio of nitrovarnish and acetone is 1:2) Stir, and finally spray it on the surface of the sample to be irradiated, the thickness of the sprayed layer is 100 μm, and dry it in an oven for 12 hours.

[0056] The third step is to fix the sample to be irradiated on the stage, and use the "HOPE-1" high-current pulsed electron beam de...

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Abstract

The invention relates to the technical field of titanium alloy surface modification, in particular to a method for realizing molybdenum alloying of a surface through irradiating TC4 titanium alloy byan electron beam. Metal powder pre-coating is combined with the high current pulse electron beam irradiating technology to prepare an alloying layer with high hardness and corrosion resistance on thesurface of TC4 titanium alloy.

Description

technical field [0001] The invention relates to the technical field of titanium alloy surface modification, in particular to a method for realizing surface molybdenum alloying of TC4 titanium alloy by electron beam irradiation. Specifically, an alloyed layer with high hardness and excellent corrosion resistance is prepared on the surface of TC4 titanium alloy by combining pre-spraying metal powder with high-current pulsed electron beam irradiation technology, which belongs to the technical field of surface modification of metal materials. Background technique [0002] The first practical titanium alloy was the Ti-6Al-4V alloy successfully developed in the United States in 1954. Due to its high strength and low density (4.51g / cm 3 ), non-ferromagnetic, excellent processing performance, good corrosion resistance and biocompatibility, and become the ace alloy in the titanium alloy industry. The usage of this alloy has accounted for 75%-85% of all titanium alloys. It is used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 姚欣雯吕鹏陈亚楠刘子剑蔡杰关庆丰
Owner JIANGSU UNIV
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