Composite ion-injection surface modification method for copper and its alloy

A composite ion and surface modification technology, applied in the field of metal materials, can solve the problem of not being able to significantly improve the surface hardness and wear resistance of copper, and achieve improved oxidation and corrosion resistance, corrosion resistance, and oxidation resistance. The effect of performance and corrosion resistance

Inactive Publication Date: 2010-05-19
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its defect is: although the method and reagent proposed by this patent can slow down the corrosion of copper, it can't obviously improve the hardness and wear resistance of the surface of copper, and it is the low strength of copper that limits its further development to a large extent. widely used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] This embodiment 1 is implemented under the following conditions of implementation and technical requirements:

[0021] With copper with a purity of 99.9% as the substrate, nitrogen, zinc and titanium ions are implanted on the surface, and the steps are as follows:

[0022] (1) The surface of the red copper sample is polished to 1500# with SiC sandpaper, then cleaned with deionized water and absolute ethanol, and dried;

[0023] (2) Put the red copper matrix into the vacuum chamber of the ion implanter, and carry out compound ion implantation of nitrogen, zinc and titanium ions on its surface, and the implantation sequence is to implant zinc and titanium ions first, and then implant nitrogen ions. Its injection parameters are:

[0024] The vacuum degree is 1×10 -3 Pa;

[0025] The accelerating voltage of both Zn and Ti is 30kV, and the implantation dose of Zn is 3×10 17 ions / cm 2 (ions / cm 2 ), beam density 35μA / cm 2 , the target temperature is about 200℃; the Ti i...

Embodiment 2

[0030] This embodiment 2 is implemented under the following conditions of implementation and technical requirements:

[0031] With copper with a purity of 99.9% as the substrate, boron, aluminum and titanium ions are implanted on its surface, and the steps are as follows:

[0032] (1) The surface of the red copper sample is polished to 1500# with SiC sandpaper, then cleaned with deionized water and absolute ethanol, and dried;

[0033] (2) Put the red copper substrate into the vacuum chamber of the ion implanter, and perform composite ion implantation of boron, aluminum and titanium ions on its surface, and the implantation sequence is to implant aluminum and titanium ions first, and then implant boron ions. Its injection parameters are:

[0034] Vacuum degree is 5×10 -3 Pa;

[0035] The accelerating voltages of Al and Ti are both 45kV, and the implantation dose of Al is 6×10 17 ions / cm 2 (ions / cm 2 ), beam density 5μA / cm 2 , the target temperature is about 250℃; the Ti...

Embodiment 3

[0040] This embodiment 3 is implemented under the following conditions of implementation and technical requirements:

[0041] Using H70 brass as the substrate, implant nitrogen, aluminum and titanium ions on its surface, the steps are as follows:

[0042] (1) Polish the surface of the brass sample to 1200# with SiC sandpaper, then clean it with deionized water and acetone, and dry it;

[0043] (2) Put the brass matrix into the vacuum chamber of the ion implanter, and perform nitrogen, aluminum and titanium composite ion implantation on its surface. The implantation sequence is: first implant aluminum and titanium ions, and then implant nitrogen ions. The injection parameters are: the degree of vacuum is 1×10 -3 Pa;

[0044] The accelerating voltages of Ti and Al are both 40kV, and the Al implantation dose is 3×10 17 ions / cm 2 (ions / cm 2 ), beam density 25μA / cm 2 , the target temperature is about 250℃; the Ti implantation dose is 1×10 17 ions / cm 2 (ions / cm 2 ), beam de...

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Abstract

The invention relates to a surface modified method for composite ion infusion of copper and its alloy in the area of material technology. Firstly, the copper or the copper alloy surface is grinded, and is polished to 1200#-1500#. Then the deionized water and organic liquid are used to ablution the surface of sample, after drying spare. Composite ion infusion technology is adopted to infuse copperand its alloy into the equipment of ion implantation compound coating, which can realize simultaneously infusion the nonmetallic element and the metallic element to the surface of copper and its alloy. For high energy ion infusion into copper and its alloy surface at very high speed, causes its surface to have many point defects and line defects are yielded in the surface of copper and its alloy.These defects can strengthen the surface of material surface, enhance its degree of hardness, and improve its wear-resisting performance. It also can remarkably reduce adsorptive capacity of oxygen inthe surface of copper and its alloy, or form a slice of compact oxidized protective film in its surface, and thus enhance the anti-oxygenic properties and the corrosion-resisting properties of copperand its alloy.

Description

technical field [0001] The invention relates to a method in the technical field of metal materials, in particular to a method for modifying the surface of copper or its alloy by implanting composite ions. Background technique [0002] Copper is an ancient and young non-ferrous metal material. With the recognition of the super antibacterial properties of copper materials and people's increasing health awareness with the improvement of living standards, the application range of copper is also wider. At present, there have been many literature reports that copper and its alloys have strong antibacterial and antibacterial functions. For example, the antibacterial rate against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Candida albicans can reach 99.99%, which is far better than commonly used water and home appliance materials. At present, copper and its alloys are not only widely used in traditional fields such as electric power, cold and heat exchangers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/48C23C14/02C23C14/54
Inventor 蔡珣安全长沈耀徐放
Owner SHANGHAI JIAOTONG UNIV
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