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Brass alloy with macro-hole, micron-hole and nano-hole hierarchical hole structure and application thereof

A brass alloy and nanopore technology, applied in the field of brass alloy preparation, can solve the problems of lack of mechanical integrity of the sample, single antibacterial bacteria, long production cycle, etc., to reduce the complexity of equipment, simple components, antibacterial effect Improved effect

Inactive Publication Date: 2017-03-22
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the disadvantages of high equipment cost, complex process, long production cycle, lack of mechanical integrity of samples and single antibacterial bacteria in the prior art

Method used

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  • Brass alloy with macro-hole, micron-hole and nano-hole hierarchical hole structure and application thereof
  • Brass alloy with macro-hole, micron-hole and nano-hole hierarchical hole structure and application thereof
  • Brass alloy with macro-hole, micron-hole and nano-hole hierarchical hole structure and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The first step is to prepare the macropores of the brass alloy

[0033] Utilize numerical control machining technology to process the Cu-41wt.%Zn (impurityfigure 1 a shows the overall effect after processing, figure 1 b shows a schematic diagram of the distribution of macropores, with a total of 16 pores. The prepared samples were washed successively with acetone, absolute ethanol and ultrapure water, and then placed in a vacuum drying oven and dried at 60°C for 2 hours.

[0034] The second step, preparation of micro-nanopores in brass alloys

[0035] The porous brass cylinder with macropore array prepared in the first step was immersed in a nitric acid solution with a mass concentration of 5% for dealloying treatment. This process was carried out at 37°C, and the dealloying time was controlled at 20 minutes. After dealloying, the brass cylinder forms a multi-level pore structure with macropores-micropores-nanopores, such as figure 1 b and figure 1 c shows the schem...

Embodiment 2

[0040] The first step is to prepare the macropores of the brass alloy

[0041] Utilize numerical control machining technology to process the Cu-39wt.%Zn (impurity Figure 6 A schematic diagram showing the distribution of macropores is shown, with a total of 52 pores. The prepared samples were washed successively with acetone, absolute ethanol and ultrapure water, and then placed in a vacuum drying oven and dried at 60°C for 2 hours.

[0042] The second step, preparation of micro-nanopores in brass alloys

[0043] The porous brass cylinder with a macropore array prepared in the first step was immersed in a nitric acid solution with a mass concentration of 4.5% for dealloying treatment. This process was carried out at 35°C, and the dealloying time was controlled at 10 minutes. After dealloying, the brass cylinders form a hierarchical porous structure with macropores-micropores-nanopores. The prepared brass alloy was washed successively with 0.1M sodium hydroxide solution, alcoh...

Embodiment 3

[0047] The first step is to prepare the macropores of the brass alloy

[0048] Utilize numerical control processing technology to process the Cu-40wt.%Zn (impurity Figure 8 A schematic diagram showing the distribution of macropores is shown, with a total of 16 pores. The prepared samples were washed successively with acetone, absolute ethanol and ultrapure water, and then placed in a vacuum drying oven and dried at 60°C for 2 hours.

[0049] The second step, preparation of micro-nanopores in brass alloys

[0050] The porous brass cylinder with macropore array prepared in the first step was immersed in a nitric acid solution with a mass concentration of 6.5% for dealloying treatment. This process was carried out at 40°C, and the dealloying time was controlled at 30 minutes. After dealloying, the brass cylinders form a hierarchical porous structure with macropores-micropores-nanopores. The prepared brass alloy was washed successively with 0.1M sodium hydroxide solution, alcoh...

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Abstract

The invention relates to a brass alloy with a macro-hole, micron-hole and nano-hole hierarchical hole structure and application thereof. The alloy is prepared through the following method including the following steps that (1) a via hole array perpendicular to the surface is formed on a brass cylinder through processing by means of a numerical control processing technology, and then the processed brass cylinder is cleaned and dried; and (2) the obtained multi-hole brass alloy cylinder with the via hole array in the first step is soaked in a nitric acid solution with the mass concentration being 4.5%-6.5%, de-alloying treatment is performed for 10-30 minutes at the temperature of 35-40 DEG C, and the brass alloy with the macro-hole, micron-hole and nano-hole hierarchical hole structure is obtained after cleaning and drying. According to the brass alloy with the macro-hole, micron-hole and nano-hole hierarchical hole structure and the application thereof, the material porosity and specific surface area are increased, and meanwhile, the compression performance is still kept at high level. The fatality rate of escherichia coli and staphylococcus aureus can reach 100% to the maximum degree.

Description

technical field [0001] The technical solution of the invention relates to the preparation of a brass alloy, specifically a brass alloy with a macropore-micropore-nanopore multi-level structure and its application. Background technique [0002] Brass alloys are mainly composed of copper and zinc. Brass has good mechanical properties and low cost, and is widely used in coins, medals, bullet cases, hardware and other fields. Brass also has certain corrosion resistance and antibacterial properties. Among them, antibacterial property refers to the ability of a certain substance to keep the growth or reproduction of certain microorganisms below the necessary level within a certain period of time. Therefore, brass is widely used in water supply and drainage pipes and related parts in daily life. In these applications, the technical treatment of the faucet outlet is closely related to people's health. There are usually some fungi and impurities in domestic water. If the outlet of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/02C23F1/18
CPCC23F1/02C23F1/18
Inventor 秦春玲张燕山王志峰王晗祝江赛赵维民
Owner HEBEI UNIV OF TECH
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