CN110195249A - A kind of anodic oxidation preparation method of antibacterial, colored aluminum or aluminum alloy - Google Patents
A kind of anodic oxidation preparation method of antibacterial, colored aluminum or aluminum alloy Download PDFInfo
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- CN110195249A CN110195249A CN201910492410.5A CN201910492410A CN110195249A CN 110195249 A CN110195249 A CN 110195249A CN 201910492410 A CN201910492410 A CN 201910492410A CN 110195249 A CN110195249 A CN 110195249A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/14—Producing integrally coloured layers
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
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Abstract
The present invention provides the anodic oxidation preparation method of a kind of antibacterial, colored aluminum or aluminum alloy, and in particular to S1, aluminum or aluminum alloy is carried out pre-treatment by technical field of surface；S2, electrolyte is prepared.S3, the aluminum or aluminum alloy material for taking two pieces of step S1 to obtain, immerse in the electrolyte that step S2 is obtained, and control electrolyte temperature at 15-25 DEG C；S4, the alternation direct current for applying 10-20V between two pieces of aluminum or aluminum alloy, energization 5-20 minutes；S5, in the alternating current through applying 5-15V between step S4 treated two pieces of aluminum or aluminum alloy, energization 3-15 minutes；S6, the aluminum or aluminum alloy material for obtaining step S5 carry out sealing pores；S7, it is most cleaned afterwards, is dry, while obtaining two pieces of colored aluminum or aluminum alloy with antibacterial functions.The colored aluminum or aluminum alloy that surface has antibacterial functions can be made in this method of the present invention, while can reduce aluminum or aluminum alloy oxidation, the operational sequence of coloring process, raising production efficiency.
Description
Technical field
The invention belongs to technical field of surface, and in particular to a kind of anodic oxidation of antibacterial, colored aluminum or aluminum alloy
Preparation method.
Background technique
Aluminium and aluminium alloy specific strength with higher, electrical and thermal conductivity are good, corrosion resistance is good, it is easy surface treatment etc. it is a variety of excellent
Point is widely used in the fields such as aviation, automobile, building materials, electronics, industrial equipment, becomes the metal material that usage amount is only second to steel.
The electrolytic coloring of anodic oxidation of aluminum current or aluminum alloy materials is the very mature preparation method of technology, and industrial use is most extensive
Method for anodizing and coloring be using sulfuric acid as electrolyte oxidation, then the inorganic or organic solution of use is as coloring liquid.
But above-mentioned technique is during completing anode oxidation coloration, need to by aluminum or aluminum alloy material between two kinds of solution into
Row transfer, this process easily causes mutually to pollute between surface oxidation fouling membrane or solution, and reduces production efficiency.Together
When, by years development, the demand of aluminum or aluminum alloy material is gradually increased in market, from general safeguard function to having
The functionalization of property changes, such as high thermal conductivity function, antibacterial functions.Currently, numerous researchers are to anode oxidation coloration
Technique or solution are studied, after publication 201711249620.9 is first cleaned after aluminium alloy anode oxide, is dried, then into
Row coloring avoids oxidation film or solution pollution；Publication CN201710431666.6 is made using addition Cu or Ag element
It is dispersed in aluminium alloy, to obtain the aluminum alloy materials with antibacterial functions.However for industrial production, sun
The processing step increase of pole heat-tinting reduces production efficiency, improves production cost；The aluminium alloy material of special composition proportion
Although material realizes functionalization, cost is equally improved, and be unfavorable for industrial production.
Summary of the invention
The object of the present invention is to provide a kind of antibacterials, the anodic oxidation preparation method of colored aluminum or aluminum alloy, and this method can
The colored aluminum or aluminum alloy that surface has antibacterial functions is made, while the behaviour of aluminum or aluminum alloy oxidation, coloring process can be reduced
Make process, improve production efficiency.
The present invention provides the following technical solutions:
A kind of anodic oxidation preparation method of antibacterial, colored aluminum or aluminum alloy, the specific steps of which are as follows:
S1, aluminum or aluminum alloy is subjected to pre-treatment；
S2, electrolyte is prepared, the electrolyte is sulfuric acid containing 150-200g/L, 1-5g/L silver nitrate, 1-10g/L nitric acid
Cerium, 1-10g/L copper sulphate, 1-8g/L stannous sulfate, 3-15g/L magnesium sulfate, 10-30g/L boric acid, 1-10g/L ammonium sulfate it is molten
Liquid, and add in order.
S3, the aluminum or aluminum alloy material for taking two pieces of step S1 to obtain, immerse in the electrolyte that step S2 is obtained, control electrolysis
Liquid temperature is at 15-25 DEG C；
S4, the alternation direct current for applying 10-20V between two pieces of aluminum or aluminum alloy, energization 5-20 minutes；
S5, in the alternating current through applying 5-15V between step S4 treated two pieces of aluminum or aluminum alloy, energization 3-15 points
Clock；
S6, the aluminum or aluminum alloy material for obtaining step S5 carry out sealing pores；
S7, it is most cleaned afterwards, is dry, while obtaining two pieces of colored aluminum or aluminum alloy with antibacterial functions.
Preferably, the alternation conversion time of the alternation direct current of the application is 3-10 seconds.
Preferably, when the application alternation direct current and alternating current, workpiece is immersed in same electrolyte, without turning
It moves in other electrolyte.
Preferably, two blocks of aluminum or aluminum alloy materials are electrode to be processed, the two anodic-cathodic each other, while into
Row heat-tinting process, without other cathode electrodes.
Preferably, the anodic oxidation preparation method is suitable for deformation aluminum or aluminum alloy, the aluminum or aluminum alloy finally obtained
Color is yellow class, reddish brown colour system.
Beneficial effects of the present invention:
(1) anodic oxidation electrolyte and coloring solution are combined into one by the present invention, and anode oxidation process and coloring process are equal
It is completed in same solution, simplifies processing step, improve production efficiency, while can effectively avoid workpiece in different step
Between existing oxidation film or solution pollution problem when shifting；
(2) present invention is using two blocks of aluminum or aluminum alloy materials as workpiece to be processed, and the two anodic-cathodic each other carries out simultaneously
Heat-tinting processing, compared to traditional either simplex part preparation method, the method can get higher workpiece output efficiency, and because
No other cathodes exist, it is possible to reduce the valueless consumption of metallic element and electric energy in electrolyte；
(3) present invention can arrive the metal ion deposition with antibacterial functions while aluminum or aluminum alloy heat-tinting
Aluminum or aluminum alloy surface makes it have antibacterial functions, and antibiotic rate is more than 99%, realizes the demand of aluminum or aluminum alloy functionalization,
Suitable for a variety of special dimensions such as medical treatment, food, water process.
(4) same colour system aluminum or aluminum alloy of the invention, Film color with heat-tinting time and ion deposition amount increasing
Add and deepen, therefore can differentiate its thicknesses of layers range and its antibiotic rate range by the depth of Film color, it is easy to produce existing
The classification of field.
Detailed description of the invention
Fig. 1 is 6063 aluminium alloy extrusions produced by the present invention；
Fig. 2 is 5052 aluminium alloy extrusions produced by the present invention；
Fig. 3 is the Cross Section Morphology figure under 6063 aluminium alloy extrusions scanning electron microscope produced by the present invention；
Fig. 4 is the anti-bacteria test result figure that 6063 aluminium alloy extrusions are handled through preparation method of the present invention respectively.
Appended drawing reference: 1,6063 alloy matrix aluminum；2, the superficial film that heat-tinting processing is formed；3, Staphylococcus aureus
Bacterium bacterium colony；4, bacteria culture media.
Specific embodiment
Embodiment 1
Select two piece of 6063 aluminum alloy materials as workpiece to be processed, specific step is as follows for preparation method:
S1, it two piece of 6063 aluminum alloy materials is put into alkali cleaning in the solution of sodium hydroxide containing 40g/L and 20g/L sodium carbonate removes
Oil, temperature take out washing after being 40 DEG C, 2 minutes；
S2, aluminium alloy is put into the solution of sulfuric acid containing 60g/L and 10g/L sodium nitrate and carries out lye and neutralizes out light, room temperature,
Washing is taken out after 1 minute；
S3, prepare electrolyte, electrolyte be 150g/L sulfuric acid, 5g/L silver nitrate, 10g/L cerous nitrate, 1g/L copper sulphate,
1g/L stannous sulfate, 15g/L magnesium sulfate, 10g/L boric acid, 1g/L ammonium sulfate solution；
6063 aluminium alloys of S4, two pieces of surface cleaning for obtaining step 2 immerse in the electrolyte that step 3 obtains, control
Electrolyte temperature is at 15 DEG C；
S5, apply voltage 20V alternation direct current between two blocks of aluminium alloys, alternation conversion time is 3 seconds, is powered 15 points
Clock；
S6, in the alternating current through applying voltage 10V between step 5 treated aluminium alloy, be powered 10 minutes；
S7, sealing pores are carried out after washing the aluminum alloy materials that step 6 obtains；
S8, it is most cleaned afterwards, is dry, it is primary to obtain two pieces of light yellow 6063 aluminum alloy materials with antibacterial functions.
Antibacterial detection is carried out to 6063 aluminum alloy materials in the present embodiment according to standard JIS-Z2801, antibiotic rate reaches
99.97%
Embodiment 2
Select two piece of 5052 aluminum alloy materials as workpiece to be processed, specific step is as follows for preparation method:
S1, it two piece of 5052 aluminum alloy materials is put into alkali cleaning in the solution of sodium hydroxide containing 40g/L and 20g/L sodium carbonate removes
Oil, temperature take out washing after being 40 DEG C, 2 minutes；
S2, aluminium alloy is put into the solution of sulfuric acid containing 60g/L and 10g/L sodium nitrate and carries out lye and neutralizes out light, room temperature,
Washing is taken out after 1 minute；
S3, prepare electrolyte, electrolyte be 180g/L sulfuric acid, 1g/L silver nitrate, 1g/L cerous nitrate, 10g/L copper sulphate,
5g/L stannous sulfate, 3g/L magnesium sulfate, 22g/L boric acid, 6g/L ammonium sulfate solution；
6063 aluminium alloys of S4, two pieces of surface cleaning for obtaining step 2 immerse in the electrolyte that step 3 obtains, control
Electrolyte temperature is at 20 DEG C；
S5, apply voltage 10V alternation direct current between two blocks of aluminium alloys, alternation conversion time is 10 seconds, is powered 20 points
Clock；
S6, in the alternating current through applying voltage 15V between step 5 treated aluminium alloy, be powered 15 minutes；
S7, sealing pores are carried out after washing the aluminum alloy materials that step 6 obtains；
S8, it is most cleaned afterwards, is dry, it is primary to obtain two pieces of 5052 aluminum alloy materials of bronzing with antibacterial functions.
Antibacterial detection is carried out to 5052 aluminum alloy materials in the present embodiment according to standard JIS-Z2801, antibiotic rate reaches
99.91%.
Embodiment 3
Select two pieces of pure aluminum materials as workpiece to be processed, specific step is as follows for preparation method:
S1, two pieces of pure aluminum materials are put into alkali cleaning oil removing in the solution of sodium hydroxide containing 40g/L and 20g/L sodium carbonate, temperature
Degree takes out washing after being 40 DEG C, 2 minutes；
S2, by two blocks of fine aluminiums be put into the solution of sulfuric acid containing 60g/L and 10g/L sodium nitrate carry out lye neutralize out light, room
Temperature takes out washing after 1 minute；
S3, prepare electrolyte, electrolyte be 200g/L sulfuric acid, 1.5g/L silver nitrate, 3g/L cerous nitrate, 6g/L copper sulphate,
8g/L stannous sulfate, 6g/L magnesium sulfate, 30g/L boric acid, 10g/L ammonium sulfate solution；
The fine aluminium of S4, two pieces of surface cleaning for obtaining step 2 immerse in the electrolyte that step 3 obtains, and control electrolyte
Temperature is at 25 DEG C；
S5, apply voltage 16V alternation direct current between two blocks of fine aluminiums, alternation conversion time is 5 seconds, is powered 10 minutes；
S6, in the alternating current through applying voltage 5V between step 5 treated fine aluminium, be powered 3 minutes；
S7, sealing pores are carried out after washing the pure aluminum material that step 6 obtains；
S8, it is most cleaned afterwards, is dry, it is primary to obtain two pieces of light red pure aluminum materials with antibacterial functions.
Antibacterial detection is carried out to the pure aluminum material in the present embodiment according to standard JIS-Z2801, antibiotic rate is up to 99.83%.
Wherein, Fig. 1 is 6063 aluminium alloy extrusions produced by the present invention, and surface presents light yellow.Fig. 2 is produced by the present invention
Bronzing is presented in 5052 aluminium alloy extrusions, surface.Fig. 3 is cutting under 6063 aluminium alloy extrusions scanning electron microscope produced by the present invention
Face shape appearance figure has 6063 alloy matrix aluminums 1, the superficial film 2 that heat-tinting processing is formed in figure.Fig. 4 is 6063 aluminium alloy types
The antibacterial for anti-bacteria test result (left side culture dish) and the conventional anodization processing that material is handled through preparation method of the present invention respectively
Test result (right side culture dish) has S. aureus colonies 3, bacteria culture media 4 in figure；
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to the foregoing embodiments
Invention is explained in detail, for those skilled in the art, still can be to foregoing embodiments institute
The technical solution of record is modified or equivalent replacement of some of the technical features.It is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. the anodic oxidation preparation method of a kind of antibacterial, colored aluminum or aluminum alloy, it is characterised in that: specific step is as follows for it,
S1, aluminum or aluminum alloy is subjected to pre-treatment；
S2, electrolyte is prepared, the electrolyte is sulfuric acid containing 150-200g/L, 1-5g/L silver nitrate, 1-10g/L cerous nitrate, 1-
10g/L copper sulphate, 1-8g/L stannous sulfate, 3-15g/L magnesium sulfate, 10-30g/L boric acid, 1-10g/L ammonium sulfate solution, and
It adds in order.
S3, the aluminum or aluminum alloy material for taking two pieces of step S1 to obtain, immerse in the electrolyte that step S2 is obtained, and control electrolyte temperature
Degree is at 15-25 DEG C；
S4, the alternation direct current for applying 10-20V between two pieces of aluminum or aluminum alloy, energization 5-20 minutes；
S5, in the alternating current through applying 5-15V between step S4 treated two pieces of aluminum or aluminum alloy, energization 3-15 minutes；
S6, the aluminum or aluminum alloy material for obtaining step S5 carry out sealing pores；
S7, it is most cleaned afterwards, is dry, while obtaining two pieces of colored aluminum or aluminum alloy with antibacterial functions.
2. the anodic oxidation preparation method of a kind of antibacterial according to claim 1, colored aluminum or aluminum alloy, feature exist
In: the alternation conversion time of the alternation direct current of the application is 3-10 seconds.
3. the anodic oxidation preparation method of a kind of antibacterial according to claim 2, colored aluminum or aluminum alloy, feature exist
In: when the application alternation direct current and alternating current, workpiece is immersed in same electrolyte, without being transferred to other electrolysis
In liquid.
4. the anodic oxidation preparation method of a kind of antibacterial according to claim 3, colored aluminum or aluminum alloy, feature exist
In: two blocks of aluminum or aluminum alloy materials be electrode to be processed, the two anodic-cathodic each other, while carrying out heat-tinting
Journey, without other cathode electrodes.
5. the anodic oxidation preparation method of a kind of antibacterial according to claim 4, colored aluminum or aluminum alloy, feature exist
In: the anodic oxidation preparation method is suitable for deformation aluminum or aluminum alloy, and the aluminum or aluminum alloy color finally obtained is yellow class
Or reddish brown colour system.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111647926A (en) * | 2020-05-14 | 2020-09-11 | 东南大学 | Preparation method of antibacterial aluminum alloy by anodic oxidation |
| CN112575355A (en) * | 2019-09-30 | 2021-03-30 | 浙江绍兴苏泊尔生活电器有限公司 | Cooking utensil and surface treatment method thereof |
| CN114369856A (en) * | 2021-08-05 | 2022-04-19 | 广州市汉科建材科技有限公司 | Preparation of antibacterial aluminum alloy anodic oxidation fluorescent film |
| CN117286551A (en) * | 2023-09-26 | 2023-12-26 | 凯米特新材料科技有限公司 | Preparation method of antibacterial corrosion-resistant aluminum alloy profile |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575355A (en) * | 2019-09-30 | 2021-03-30 | 浙江绍兴苏泊尔生活电器有限公司 | Cooking utensil and surface treatment method thereof |
| CN112575355B (en) * | 2019-09-30 | 2023-11-14 | 浙江绍兴苏泊尔生活电器有限公司 | Cooking appliance and surface treatment method thereof |
| CN111647926A (en) * | 2020-05-14 | 2020-09-11 | 东南大学 | Preparation method of antibacterial aluminum alloy by anodic oxidation |
| CN114369856A (en) * | 2021-08-05 | 2022-04-19 | 广州市汉科建材科技有限公司 | Preparation of antibacterial aluminum alloy anodic oxidation fluorescent film |
| CN117286551A (en) * | 2023-09-26 | 2023-12-26 | 凯米特新材料科技有限公司 | Preparation method of antibacterial corrosion-resistant aluminum alloy profile |
| CN117286551B (en) * | 2023-09-26 | 2024-08-16 | 凯米特新材料科技有限公司 | Preparation method of antibacterial corrosion-resistant aluminum alloy profile |
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Application publication date: 20190903 |