CN103046041B - There is in aluminum alloy surface the preparation method of the dopen Nano particulate self-assembled film of corrosion-resistant function - Google Patents
There is in aluminum alloy surface the preparation method of the dopen Nano particulate self-assembled film of corrosion-resistant function Download PDFInfo
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- CN103046041B CN103046041B CN201310029317.3A CN201310029317A CN103046041B CN 103046041 B CN103046041 B CN 103046041B CN 201310029317 A CN201310029317 A CN 201310029317A CN 103046041 B CN103046041 B CN 103046041B
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- aluminium alloy
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 32
- 238000005260 corrosion Methods 0.000 title claims abstract description 21
- 230000007797 corrosion Effects 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000008367 deionised water Substances 0.000 claims abstract description 12
- 239000002105 nanoparticle Substances 0.000 claims abstract description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- 238000004506 ultrasonic cleaning Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims abstract description 7
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 7
- 229910000989 Alclad Inorganic materials 0.000 claims abstract description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003513 alkali Substances 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 230000001186 cumulative effect Effects 0.000 claims abstract description 4
- 229960000935 dehydrated alcohol Drugs 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 238000001291 vacuum drying Methods 0.000 claims abstract description 4
- 238000007711 solidification Methods 0.000 claims abstract description 3
- 230000008023 solidification Effects 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 3
- 150000003384 small molecules Chemical class 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 claims 1
- 230000003628 erosive effect Effects 0.000 abstract description 3
- 238000005498 polishing Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 238000001338 self-assembly Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a kind of preparation method in aluminum alloy surface with the self-assembled film of the dopen Nano particulate of corrosion-resistant function.(1) aluminium alloy first removes surface alclad layer; Polishing is to smooth subsequently, by analytical pure acetone and ultrasonic cleaning; Alkali cleaning 1 ~ 10 minute, finally uses washed with de-ionized water again; (2) preparing cumulative volume is 80 ~ 100mL, and wherein the volume ratio of dehydrated alcohol, two (the silica-based propyl group of γ-triethoxy) tetrasulfide and deionized water is the solution of 20 ~ 50:1 ~ 3:79 ~ 47, adds SiO simultaneously
2nanoparticle, makes solution be 4 ~ 6 to pH, stirs, and ultrasonic cleaner vibrates; (3) aluminium alloy after step (1) being processed immerses in step (2) gained solution and soaks; Deionized water ultrasonic cleaning, vacuum drying oven solidification 1 ~ 3 hour.Cost of the present invention is low, and preparation technology is simple, and prepared self-assembled film has high resistance, low corrosion current density, can improve aluminium alloy surface anti-corrosion erosion ability, and not pollute environment and equipment.
Description
Technical field
The present invention relates to metal material surface galvanic corrosion field, particularly a kind of doping SiO in aluminum alloy surface with corrosion-resistant function
2the preparation method of nanoparticle self-assembled film.
Background technology
Al and Alalloy owing to having the advantages such as intensity is high, density is little, electrical and thermal conductivity is strong, excellent in mechanical performance, workability are good and be widely used in chemical industry, aerospace industry, automobile industry, foodstuffs industry, electronics, instrument industry and marine ship industry etc. field.But the problems such as in actual application, aluminium alloy just presents that surface hardness is lower, wear resistance and solidity to corrosion difference, which greatly limits the range of application of aluminium alloy.The raising of al alloy component and Heat Treatment on Al alloy property is no doubt very large, but also require that aluminum alloy surface has the properties such as wear-resisting, corrosion-resistant in many occasions, and the inefficacy of most of aluminum alloy materials is mostly from surface, the surface property thus improving material seems particularly important.The unimolecular film with certain orientation, compact arranged sequential 2 D connected by chemical bond is formed at matrix surface at present by self-assembling technique.The method is simple to operation, and without the need to the instrument that complexity is valuable, and the self-assembled film obtained has stronger stability and high anti-corrosion.
Summary of the invention
The object of this invention is to provide a kind of doping SiO in aluminum alloy surface with corrosion-resistant function
2the preparation method of nanoparticle self-assembled film.
Concrete steps are:
(1) aluminium alloy is first the NaOH solution removing surface alclad layer of 30 ~ 60g/L through concentration; Use 600#, 1000# and 1200# sand papering to smooth subsequently successively, by analytical pure acetone and ultrasonic cleaning 5 ~ 15 minutes; Aluminium alloy adopts concentration to be the alkali cleaning 1 ~ 10 minute at 30 ~ 70 DEG C of the NaOH solution of 30 ~ 60g/L subsequently again, finally uses washed with de-ionized water 2 ~ 3 times.
(2) preparing cumulative volume is 80 ~ 100mL, and wherein the volume ratio of dehydrated alcohol, two (the silica-based propyl group of γ-triethoxy) tetrasulfide and deionized water is the solution of 20 ~ 50:1 ~ 3:79 ~ 47, adds 20 ~ 150mgSiO simultaneously
2nanoparticle, drips analytical pure acetic acid and makes the pH of solution be 4 ~ 6, stir 1 ~ 3 hour at 20 ~ 55 DEG C of lower magnetic forces, ultrasonic cleaner vibration 1 ~ 5 hour, and described two (the silica-based propyl group of γ-triethoxy) tetrasulfide is technical grade.
(3) aluminium alloy after step (1) being processed immerses in step (2) gained solution to soak after 10 ~ 40 minutes and takes out; Deionized water ultrasonic cleaning is to remove surperficial unreacted small molecules and solvent, and at 80 ~ 120 DEG C, vacuum drying oven solidification obtains doping SiO after 1 ~ 3 hour
2self-assembled film.
Cost of the present invention is low, and preparation technology is simple, and prepared self-assembled film has high resistance, low corrosion current density, and on alloy matrix aluminum, bonding force is good, well can improve aluminium alloy surface anti-corrosion erosion ability, and not pollute environment and equipment.
Accompanying drawing explanation
Fig. 1 is doping SiO prepared by the embodiment of the present invention
2the SEM figure of nanoparticle self-assembled film.
Embodiment
embodiment:
(1) aluminium alloy is first the NaOH solution removing surface alclad layer of 40g/L through concentration; Use 600#, 1000# and 1200# sand papering to smooth subsequently successively, by analytical pure acetone and ultrasonic cleaning 15 minutes; Aluminium alloy adopts concentration to be the alkali cleaning 3 minutes at 50 DEG C of the NaOH solution of 40g/L subsequently again, finally uses washed with de-ionized water 3 times.
(2) preparing cumulative volume is 100mL, and wherein the volume ratio of dehydrated alcohol, two (the silica-based propyl group of γ-triethoxy) tetrasulfide and deionized water is the solution of 20:1:79, adds 60mgSiO simultaneously
2nanoparticle, drip analytical pure acetic acid and make the pH of solution be 4, stir 2 hours at 35 DEG C of lower magnetic forces, ultrasonic cleaner vibrates 3 hours, and described two (the silica-based propyl group of γ-triethoxy) tetrasulfide is technical grade.
(3) aluminium alloy after step (1) being processed immerses in step (2) gained solution to soak after 30 minutes and takes out; Deionized water ultrasonic cleaning is to remove surperficial unreacted small molecules and solvent, and at 100 DEG C, vacuum drying oven solidifies acquisition doping SiO after 1 hour
2self-assembled film.
Polarization curve is one of electrochemical means commonly used in corrosion science, is the effective tool of the covering metal electrode erosion rate such as research rete, coating, conversion film.Carry out the test of electrochemistry corrosion resisting property to self-assembled film, adopt three-electrode system, the NaCl of 3.5% is corrosive medium, carries out Tafel curve scanning obtain result as table 1 to it.
Table 1: the corrosion potential of sample in 3.5% (w) NaCl aqueous solution and the contrast of corrosion electric current density
| Sample type | E corr/mV(vs SCE) | i corr/(A/cm 2) |
| Check sample | -0.9729 | 3.783×10 -5A·cm -2 |
| Doping SiO 2Nanoparticle self-assembly rete | -07243 | 1.576×10 -8 A·cm -2 |
Obtain from test data, the corrosion electric current density of aluminum alloy surface self-assembly rete is 1.576 × 10
-8acm
-2than 3.783 × 10 of blank aluminum alloy surface
-5a/cm
-2reduce 3 orders of magnitude, show obvious corrosion resisting property.
Adopt alternating-current impedance performance test (EIS) to sample in addition, result is as following table 2.
Table 2: aluminium alloy and the resistance value of aluminium alloy surface composite membrane in 3.5% (w) NaCl aqueous solution
| Sample type | Z/ Ω/cm 2 |
| Check sample | 1.9×10 2 |
| Doping SiO 2Nanoparticle self-assembly rete | 1.8×10 5 |
Can find out that the resistance value of the self-assembly rete of aluminum alloy surface dopen Nano particulate is 1.8 × 10 from table
5Ω/cm
2than 1.9 × 10 of blank aluminum alloy surface
2Ω/cm
2increase 3 orders of magnitude, show good corrosion resisting property equally.
Claims (1)
1. there is in aluminum alloy surface a preparation method for the dopen Nano particulate self-assembled film of corrosion-resistant function, comprise and pre-treatment is carried out to aluminium alloy, it is characterized in that concrete steps are:
(1) aluminium alloy is first the NaOH solution removing surface alclad layer of 30 ~ 60g/L through concentration; Use 600#, 1000# and 1200# sand papering to smooth subsequently successively, by analytical pure acetone and ultrasonic cleaning 5 ~ 15 minutes; Aluminium alloy adopts concentration to be the alkali cleaning 1 ~ 10 minute at 30 ~ 70 DEG C of the NaOH solution of 30 ~ 60g/L subsequently again, finally uses washed with de-ionized water 2 ~ 3 times;
(2) preparing cumulative volume is 80 ~ 100mL, and wherein the volume ratio of dehydrated alcohol, two (the silica-based propyl group of γ-triethoxy) tetrasulfide and deionized water is the solution of 20 ~ 50:1 ~ 3:79 ~ 47, adds 20 ~ 150mgSiO simultaneously
2nanoparticle, drips analytical pure acetic acid and makes the pH of solution be 4 ~ 6, stir 1 ~ 3 hour at 20 ~ 55 DEG C of lower magnetic forces, ultrasonic cleaner vibration 1 ~ 5 hour; Described two (the silica-based propyl group of γ-triethoxy) tetrasulfide is technical grade;
(3) aluminium alloy after step (1) being processed immerses in step (2) gained solution to soak after 10 ~ 40 minutes and takes out; Deionized water ultrasonic cleaning is to remove surperficial unreacted small molecules and solvent, and at 80 ~ 120 DEG C, vacuum drying oven solidification obtains doping SiO after 1 ~ 3 hour
2self-assembled film.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103556149B (en) * | 2013-11-06 | 2016-01-13 | 桂林理工大学 | A kind of Corrosion inhibition treatment method suppressing magnesium alloy to corrode in sodium chloride solution |
| CN104611751A (en) * | 2015-02-21 | 2015-05-13 | 桂林理工大学 | Micro-arc oxidation self-assembly composite membrane layer on surface of magnesium alloy and preparation method of micro-arc oxidation self-assembly composite membrane layer |
| CN104630749A (en) * | 2015-02-22 | 2015-05-20 | 桂林理工大学 | Corrosion-resistant self-assembled doped film layer on aluminum alloy surface and preparation method of corrosion-resistant self-assembled doped film layer |
| CN105401145A (en) * | 2015-11-04 | 2016-03-16 | 合肥海源机械有限公司 | Fluorinated carbon nanotube aluminum alloy cured film forming solution and preparation method thereof |
| CN107419255A (en) * | 2017-07-27 | 2017-12-01 | 泾县信达工贸有限公司 | A kind of aluminium alloy electric hot plate processing method |
| CN108468041A (en) * | 2018-02-19 | 2018-08-31 | 桂林理工大学 | The method with corrosion-resistant function self-assembled composite film is prepared in aluminum alloy surface |
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| CN1840735A (en) * | 2005-03-25 | 2006-10-04 | 霓佳斯株式会社 | Steel sheet coated with chemical conversion film and process for producing the same |
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| CN1840735A (en) * | 2005-03-25 | 2006-10-04 | 霓佳斯株式会社 | Steel sheet coated with chemical conversion film and process for producing the same |
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| Title |
|---|
| 铝合金表面有机硅烷杂化膜的制备及其防腐蚀性能研究;罗和义;《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》;20120415(第4期);第11页-第13页第4行、第12页第9-12行 * |
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Application publication date: 20130417 Assignee: Guilin Changlong Machinery Co.,Ltd. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2023980044482 Denomination of invention: Preparation Method of Doped Nanoparticle Self assembled Films with Corrosion Resistance on Aluminum Alloy Surface Granted publication date: 20151223 License type: Common License Record date: 20231027 |