CN106957977A - A kind of nonheat-treatable Antibacterial aluminum alloy and its preparation technology - Google Patents
A kind of nonheat-treatable Antibacterial aluminum alloy and its preparation technology Download PDFInfo
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- CN106957977A CN106957977A CN201710372388.1A CN201710372388A CN106957977A CN 106957977 A CN106957977 A CN 106957977A CN 201710372388 A CN201710372388 A CN 201710372388A CN 106957977 A CN106957977 A CN 106957977A
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- Prior art keywords
- aluminum alloy
- nonheat
- treatable
- antibacterial aluminum
- antibacterial
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
Abstract
The invention discloses a kind of nonheat-treatable Antibacterial aluminum alloy and its preparation technology, belong to aluminium alloy and anti-biotic material technical field.Calculated in weight percent, the chemical composition of the aluminium alloy is as follows：Mg：2.5 3.5%；Cr：0.15 0.35%；Cu：0.4 0.8%；RE：0.04 0.08%；Surplus is that impurity content should meet the corresponding requirements in aluminium alloy national standard in Al, alloy.The Antibacterial aluminum alloy new material of the present invention has unique antibacterial functions, while the advantage of aluminium alloy good corrosion resistance can be kept.The Antibacterial aluminum alloy can significantly reduce the pathogenic risk of the bacterium infection triggered in existing Al-alloy products use, can be widely applied to the industry container arts such as kitchen and bath, food.
Description
Technical field
The present invention relates to aluminium alloy and anti-biotic material technical field, and in particular to a kind of nonheat-treatable Antibacterial aluminum alloy and
Its preparation technology, the aluminium alloy can be widely applied to the industry container arts such as kitchen and bath, food.
Background technology
Aluminium alloy due to its light weight, corrosion-resistant, formability is good the advantages of, be widely applied to food, chemistry, ship
The multiple fields such as industry, building decoration and occasion.With increasingly harsh, the event day that bacterium infection triggers of people's living environment
Benefit increases, and has been subjected to the very big concern of society.However, traditional aluminium alloy itself does not have sterilized, antibacterial functions.Therefore open
The aluminium alloy itself with antibacterial functions is sent, the demand growing by market has greatly been catered to.
Application number is respectively that 201110174210.9,2011110171161.3 patents of invention disclose one kind for heat friendship
The Antibacterial aluminum alloy of parallel operation cooling flat tube and radiator fin, mainly make use of the bactericidal action of Ag and Zn ions.In addition, Shen
Number a kind of food containers antiseptic aluminum please be disclosed respectively for 201310038297.6 and 201310126085.3 patent of invention
Alloy and a kind of Antibacterial aluminum alloy for architectural ornament, mainly make use of the composite bactericidal of Ag, Zn and Re element to act on.Above-mentioned patent
The main strong bactericidal action using Ag, but there are two subject matters, one be Ag the comparison that all designs of content it is high, highest
Reach 3%.And the strong volatility of Ag elements in itself causes it to be difficult control recovery rate in actual production process.Two be due to Ag members
In plain fancy price, the metal material of existing all industrialized productions, not a kind of metal alloy of commercial grades,
This seriously constrains its practical feasibility.Therefore, by designing the aluminium alloy using Ag as main antiseptic elements, no matter set from material
Meter angle or practical application are set out, and face great practical challenge.
It is well known that copper equally has very strong sterilizing function, and copper also has important reality in aluminium alloy
Border is applied, during 2 line aluminium alloys are exactly aluminium alloy of the class based on aluminum bronze, such aluminium alloy, due to solubility of the copper in aluminium
Larger, the copper being solid-solubilized in aluminum substrate can be by Precipitation CuAl2Play obvious ageing strengthening effect.But it is due to close
Al-Cu intermetallic compounds in gold are soluble in anodic oxidation, and therefore, it is difficult to generate the anode oxide film of densification, its corrosion resistant
Corrosion is poor, and this serial aluminium alloy is very difficult to apply in requires higher occasion to corrosion resistance.
In order to make full use of practical application of the copper in 5 line aluminium alloys, on the premise of its corrosion resisting property is not significantly reduced,
Fully ensure that its antibacterial action, from design of material angle, how using copper sterilization idiocratic, fully weaken it to corrosion resistance
The adverse effect of energy, develops and has anti-corrosion and anti-microbial property 5 line aluminium alloy new materials concurrently, is resistance to eliminating or reducing correlation 5
The bacterium infection problem that erosion Al-alloy products trigger has important society and economic implications.
The content of the invention
For weak point present in present technology, it is an object of the invention to provide a kind of nonheat-treatable antiseptic aluminum
Alloy and its preparation technology, the aluminium alloy not only have excellent antibacterial bacteriostatic ability, maintain with 5052 aluminium alloy phases
When corrosion resisting property, use requirement of original 5052 aluminium alloy in correlated product field can be met.
To achieve the above object, the technical solution adopted in the present invention is as follows：
A kind of nonheat-treatable Antibacterial aluminum alloy, with weight, the chemical composition of the Antibacterial aluminum alloy is：
Mg：2.5-3.5%；Cr：0.15-0.35%；Cu：0.4-0.8%；RE：0.04-0.08%；Surplus is Al and inevitable
Impurity content should meet the corresponding requirements in aluminium alloy national standard in impurity, alloy.Wherein：RE is rare earth element, RE
Preferably La and/or Ce..
The performance of the Antibacterial aluminum alloy is as follows：
Mechanical property：Yield strength Rp0.2 >=92MPa, tensile strength Rm >=195MPa, elongation percentage >=25%；
Anti-microbial property：Sterilizing rate >=98.0%；
Corrosion resisting property：The μ Am of corrosion electric current density≤32-2。
The preparation technology of the Antibacterial aluminum alloy comprises the following steps：
(1) according to the alloying component dispensing, using crucible electrical resistance furnace melting and casting metal ingot casting；
(2) by ingot casting under the conditions of 500 DEG C Homogenization Treatments 20 hours, then 440 DEG C of hot forgings be thickness 10mm aluminium
Plate, anneals 2 hours under the conditions of 400 DEG C；
(3) by the cold rolling sheet material for thickness 1mm of aluminium sheet obtained by step (2), that is, obtain the nonheat-treatable antiseptic aluminum and close
Gold.
Aluminium alloy design principle of the present invention is as follows：
In the composition design of the Antibacterial aluminum alloy of the present invention, copper (Cu) is important alloy element in alloy, rationally
Copper addition to be avoided that aluminium alloy corrosion resistance declines too many.It is unobvious on corrosion resisting property influence when copper content is relatively low, but its
Do not possess stable anti-microbial property thus.When copper content is relatively too high, the compactness of heavy damage passivating film reduces aluminium alloy
Decay resistance, therefore copper content control in Antibacterial aluminum alloy in the present invention is 0.4-0.8wt%.
In the composition design of Antibacterial aluminum alloy in the present invention, rare earth (RE) is alloy member important in alloy of the present invention
It is preferably La and/or Ce, more preferably La elements in element, the present invention.Its main purpose added is to ensure that aluminium alloy has
Stable anti-microbial property.Because La and/or Ce is relatively low in the solubility of aluminium alloy, the general function with alterant is present in aluminium
With in field trash, optimizing the mechanical property of material.Prior, La and/or Ce are also a kind of ratio in alloying component of the present invention
Relatively reliable sterilized element.La and/or Ce additions are too low, do not have effective anti-microbial property, La and/or Ce additions are inclined
Height, it is mingled with aluminium into harmful, destroys the mechanical property of material.Therefore, La in the present invention in Antibacterial aluminum alloy and/
Or Ce additions are 0.04-0.08%.
The present invention contains the common alloying element Mg of 5 line aluminium alloys.It is mainly for ensureing that it is enough that the aluminium alloy has
Intensity and hardness, and with good processing characteristics.Compared with 5052 aluminium alloys, the present invention has suitably heightened Mg contents, mends
The loss that copper addition corrosion resisting property descent tape is come is repaid.Therefore 2.5-3.5%Mg is contained in the present invention.
Cr in the present invention is the common addition element of 5 line aluminium alloys, except there is certain invigoration effect to aluminium alloy, also
Alloy ductility and reduction stress corrosion opening cracking maleate sensitivity can be improved.
Therefore, a kind of nonheat-treatable Antibacterial aluminum alloy of the invention, in guarantee, it has excellent mechanical property and anti-corrosion
On the premise of performance, using copper and the sterilizing function of rare earth, realizing its aluminium alloy body has the New function of antibacterial, Neng Gouxian
Write the bacterium infection risk triggered in the existing Al-alloy products use of reduction.
The beneficial effects of the invention are as follows：
1st, the present invention is by experimental study, for 5052 aluminium alloys commonly used in existing 5 line aluminium alloy, it is proposed that Yi Zhongfei
Heat treatment type Antibacterial aluminum alloy, by optimizing Mg contents in existing 5052 aluminium alloy, while adding 0.4-0.8% copper
With 0.04-0.08% rare earth element (La and/or Ce), obtain have concurrently corrosion resisting property and antibacterial functions Antibacterial aluminum alloy it is new
Material.
2nd, the Antibacterial aluminum alloy in the present invention can be widely applied to the industry container arts such as kitchen and bath, food.
Embodiment
The present invention is described in detail with reference to embodiments.
Chemical composition ranges according to set by Antibacterial aluminum alloy of the present invention, devise embodiment 1-6 al alloy components, are
Comparative illustration, while devise comparative example 1-9.The nonheat-treatable Antibacterial aluminum alloy of the present invention, it is molten using crucible electrical resistance furnace
Refine and pour into ingot, ingot casting was in 500 DEG C of Homogenization Treatments 20 hours, then in 440 DEG C of hot forging Cheng Houwei 10mm aluminium sheet,
Annealed 2 hours through 400 DEG C, be cold rolled to thick 1mm sheet material, obtain test sample.Smelt embodiment 1-6 and comparative example 1-9 aluminium is closed
Its golden chemical composition is shown in Table 1.
The aluminum alloy chemical composition (wt, %) of the embodiment of table 1 and comparative example
1st, mechanical property
According to GB/T228.1-2010《Metal material stretching test part 1：Room temperature test method》Regulation is to embodiment
Tensile tests at room is carried out with comparative example aluminium alloy.
2nd, anti-microbial property is detected
According to " JIS Z 2801-2000《Antibacterial fabricated product-antibiotic property test method and antibacterial effect》、GB/T
2591‐2003《Antibiotic plastic anti-microbial property experimental method and antibacterial effect》" etc. correlation standard, quantitative test table 1 institute
The aluminium alloy that is shown as point, antibacterial acieral frequent infectious bacteria Escherichia coli are acted on after sterilizing rate.Anti-microbial property detection knot
Fruit is shown in Table 2, and the computing formula of wherein sterilizing rate is：Sterilizing rate (%)=[(control aluminum alloy sample viable count-Antibacterial aluminum alloy
Viable count)/control aluminum alloy sample viable count] × 100, control aluminum alloy sample viable count is that bacterium is carried out in comparative example
Viable count after culture, Antibacterial aluminum alloy viable count refers to carry out the viable count after Bacteria Culture in Antibacterial aluminum alloy.
3rd, decay resistance
According to aluminium alloy pitting potential measuring method (national standard：GB/T 17899-1999) to embodiment of the present invention aluminium
Alloy and comparative example aluminium alloy carry out anodic polarization curves test, and test result is shown in Table 2.
The embodiment Antibacterial aluminum alloy of table 2, the performance test results of comparative example aluminium alloy
To sum up, by above example and comparative example experimental result, only when in this patent composition protection domain,
It can just prepare while having the Antibacterial aluminum alloy of excellent mechanical property, antibacterial functions and corrosion resisting property concurrently.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all cover in protection scope of the present invention.
Claims (5)
1. a kind of nonheat-treatable Antibacterial aluminum alloy, it is characterised in that：By weight percentage, the Antibacterial aluminum alloy chemistry into
It is divided into：Mg：2.5-3.5%；Cr：0.15-0.35%；Cu：0.4-0.8%；RE：0.04-0.08%；Surplus is Al and can not kept away
The impurity exempted from；Wherein：RE is rare earth element.
2. according to the nonheat-treatable Antibacterial aluminum alloy described in claim 1, it is characterised in that：Impurity element contains in the aluminium alloy
Amount should meet the corresponding requirements in aluminium alloy national standard.
3. according to the nonheat-treatable Antibacterial aluminum alloy described in claim 1, it is characterised in that：The rare earth elements RE is La
And/or Ce.
4. according to the nonheat-treatable Antibacterial aluminum alloy described in claim 1, it is characterised in that：The performance of the Antibacterial aluminum alloy is such as
Under：
Mechanical property：Yield strength Rp0.2 >=92MPa, tensile strength Rm >=195MPa, elongation percentage >=25%；
Anti-microbial property：Sterilizing rate >=98.0%；
Corrosion resisting property：The μ Am of corrosion electric current density≤32-2。
5. according to the preparation technology of the nonheat-treatable Antibacterial aluminum alloy described in claim 1, it is characterised in that：The technique includes
Following steps：
(1) according to the alloying component dispensing, using crucible electrical resistance furnace melting and casting metal ingot casting；
(2) by ingot casting under the conditions of 500 DEG C Homogenization Treatments 20 hours, then 440 DEG C of hot forgings be thickness 10mm aluminium sheet,
Annealed 2 hours under the conditions of 400 DEG C；
(3) by the cold rolling sheet material for thickness 1mm of aluminium sheet obtained by step (2), that is, the nonheat-treatable Antibacterial aluminum alloy is obtained.
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| CN201710372388.1A CN106957977A (en) | 2017-05-24 | 2017-05-24 | A kind of nonheat-treatable Antibacterial aluminum alloy and its preparation technology |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01119637A (en) * | 1987-10-30 | 1989-05-11 | Furukawa Alum Co Ltd | Aluminum alloy material for can end |
| CN101037744A (en) * | 2007-04-29 | 2007-09-19 | 东北轻合金有限责任公司 | Manufacturing method of aluminum alloy plate for train compartment |
| JP2010100879A (en) * | 2008-10-22 | 2010-05-06 | Mitsubishi Alum Co Ltd | High strength aluminum alloy material having excellent brightness and stress corrosion cracking resistance |
| CN104532067A (en) * | 2014-12-12 | 2015-04-22 | 华北电力大学 | Non-heat treatment medium-strength aluminum alloy conductor material and preparation method thereof |
| CN104805340A (en) * | 2015-05-21 | 2015-07-29 | 广西友合铝材有限公司 | Rare earth aluminium-magnesium-silicon alloy material and preparation method thereof |
-
2017
- 2017-05-24 CN CN201710372388.1A patent/CN106957977A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01119637A (en) * | 1987-10-30 | 1989-05-11 | Furukawa Alum Co Ltd | Aluminum alloy material for can end |
| CN101037744A (en) * | 2007-04-29 | 2007-09-19 | 东北轻合金有限责任公司 | Manufacturing method of aluminum alloy plate for train compartment |
| JP2010100879A (en) * | 2008-10-22 | 2010-05-06 | Mitsubishi Alum Co Ltd | High strength aluminum alloy material having excellent brightness and stress corrosion cracking resistance |
| CN104532067A (en) * | 2014-12-12 | 2015-04-22 | 华北电力大学 | Non-heat treatment medium-strength aluminum alloy conductor material and preparation method thereof |
| CN104805340A (en) * | 2015-05-21 | 2015-07-29 | 广西友合铝材有限公司 | Rare earth aluminium-magnesium-silicon alloy material and preparation method thereof |
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Application publication date: 20170718 |