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A kind of antibacterial aluminum alloy and preparation method thereof

An aluminum alloy and alloy technology, applied in the field of antibacterial cobalt-based alloy and its preparation, can solve the problems of increased manufacturing cost and high material cost, and achieve the effects of good antibacterial performance, durable antibacterial performance and good deformation performance

Active Publication Date: 2019-06-28
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent adopts the addition of Ag, Zn, and RE elements to the Al-Mn-Mg alloy in an appropriate range to ensure the antibacterial effect, but the defect of this patent is: more alloy varieties are used, which not only increases the manufacturing cost, Moreover, the material cost is higher

Method used

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  • A kind of antibacterial aluminum alloy and preparation method thereof
  • A kind of antibacterial aluminum alloy and preparation method thereof
  • A kind of antibacterial aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Aluminum alloys containing different Cu contents are smelted in a resistance furnace, and then cast into billets, or hot forged and rolled into bars or plates. The alloy composition is (weight percent): Al, balance; Cu: 1- 10, and the alloy is treated with an antibacterial treatment process, see Table 1 for details. Then the antibacterial performance of the alloy was tested.

Embodiment 2

[0022] Aluminum alloys containing different Ag contents are smelted in a resistance furnace, and then cast into blanks, or hot forged and rolled into bars or plates. The alloy composition is (weight percent): Al, balance; Ag: 1- 10, and the alloy is treated with an antibacterial treatment process, see Table 1 for details. Then the antibacterial performance of the alloy was tested.

Embodiment 3

[0024] Aluminum alloys containing different Cu and Ag contents are smelted in a resistance furnace, and then cast into billets, or hot forged and rolled into bars or plates. The alloy composition is (weight percent): Al, balance; Ag: 1-10, Cu: 1-10, and the alloy is treated with an antibacterial treatment process, see Table 1 for details. Then the antibacterial performance of the alloy was tested.

[0025] According to the following formula, the bactericidal rate of aluminum alloy to common bacteria (Escherichia coli, Staphylococcus aureus, etc.) is calculated:

[0026] Bactericidal rate (%)=[(number of viable bacteria in control sample-number of viable bacteria in antibacterial aluminum alloy) / number of viable bacteria in control sample]×100%

[0027] In the formula, the number of live bacteria in the control sample is the number of live bacteria after bacterial culture on the pure titanium of the control sample, and the number of live bacteria in the antibacterial aluminum ...

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PUM

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Abstract

The invention discloses an antibacterial aluminum alloy. An appropriate amount of one or two of the Cu element and the Ag element is added to the aluminum, and after antibacterial treatment, the nanoscale copper-rich phase or silver-rich phase is dispersed and precipitated, and is evenly distributed in the aluminum alloy. In the matrix, the aluminum alloy is given good antibacterial properties; the antibacterial treatment refers to: the aluminum alloy is kept at 450-550°C for 2-4 hours for solid solution treatment, and the copper-rich phase or silver-rich phase in the alloy is completely dissolved into the alloy matrix. In Al; after aging treatment at 150-200℃ for 2-10 hours, nano-scale second phase particles rich in Cu or Ag are highly dispersed and precipitated in the Al matrix. Effects of the present invention: After antibacterial treatment, the antibacterial aluminum alloy has a large amount of dispersed and precipitated copper-rich phase (or silver-rich phase), which gives the aluminum alloy good and long-lasting antibacterial performance, and the antibacterial rate against Staphylococcus aureus and Escherichia coli reaches 90%. above.

Description

technical field [0001] The invention belongs to the technical field of antibacterial treatment, and relates to an antibacterial cobalt-based alloy and a preparation method thereof. Background technique [0002] The World Health Organization survey shows that water pollution has become an invisible killer of human health. 80% of the world's diseases are caused by drinking polluted water, and 50% of children's deaths are caused by drinking polluted water. 1.2 billion people in the world suffer from various diseases due to drinking polluted water. Among them, Escherichia coli and Staphylococcus aureus are common and important pathogens of humans. Escherichia coli can cause digestive system diseases such as human gastroenteritis, diarrhea, urinary system infection and cholecystitis; Staphylococcus aureus can cause pneumonia, pseudomembranous enteritis, pericarditis, sepsis, sepsis and systemic infection. [0003] Aluminum alloys are widely used in daily product preparation, su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C21/12C22F1/04C22F1/057
CPCC22C21/00C22C21/12C22F1/04C22F1/057
Inventor 张二林王晓燕杨磊秦高梧
Owner NORTHEASTERN UNIV LIAONING