CN108330476A - A kind of Non-water washing marine aluminium alloy surface metal-organic framework film - Google Patents
A kind of Non-water washing marine aluminium alloy surface metal-organic framework film Download PDFInfo
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- CN108330476A CN108330476A CN201711484033.8A CN201711484033A CN108330476A CN 108330476 A CN108330476 A CN 108330476A CN 201711484033 A CN201711484033 A CN 201711484033A CN 108330476 A CN108330476 A CN 108330476A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
Abstract
The present invention relates to field of metal surface treatment technology more particularly to a kind of Non-water washing marine aluminium alloy surface metal organic framework films.By being obtained after being handled using treatment fluid marine aluminium alloy surface, treatment fluid is formulated the framework film by the component of following content：A concentration of 45% 0.1 4wt% of fluorine zirconic acid, a concentration of 50% 0.5 3.5wt% of fluotitanic acid, a concentration of 50% 0.2 1wt% of hydrofluoric acid, 0.5 2.5wt% of silane coupling agent, a concentration of 50% 0.02 0.1wt% of phytic acid, surplus is water.The present invention by treatment fluid by being coated in aluminum alloy surface, to assign aluminium alloy good corrosion resistance, treatment fluid is using fluorine zirconic acid and fluotitanic acid as primary raw material, it is aided with the organic components such as silane coupling agent, phytic acid to act in aluminum alloy surface, using chromium-free treatment technique, safety and environmental protection greatly reduces the pollution to environment, and framework film obtained helps to improve the corrosion resistance of aluminum alloy surface and the adhesion to powdery paints.
Description
Technical field
The present invention relates to field of metal surface treatment technology more particularly to a kind of Non-water washing marine aluminium alloy surface metals-
Organic framework film.
Background technology
Aluminium alloy is widely used in ship structure material due to having good corrosion resistance, solderability and mechanical property.
But since aluminium alloy autoxidation film is relatively thin, can be corroded to shadow in the corrosion function lower substrate of seawater and damp and hot marine atmosphere
Ring its appearance and organic coating adhesive force.At present its corrosion resistance is improved by being chemically treated to aluminum alloy surface mostly
Can, the overwhelming majority uses the treatment fluid containing chromium such as chromic acid-chromate to be in direct contact metal material surface, to make its precipitation
Chromate film, or it is coated on to metal surface, chromate film, which is precipitated, after dry protects aluminum alloy surface.But due to
Cr VI is highly unwanted to human body and environment, pollution is not only will produce in processing procedure, but also the Cr VI in conversion film will also
Cause to be handled product and secondary pollution, therefore hexavalent chromium chemistry conversion processing technology are caused to environment when using and discarding in the future
Use it is more and more severely limited.
Current each state chromium-free metal surface treatment fluid all more effective, environmentally friendly in exploitation, as notification number is
The Chinese invention patent of CN1123649C discloses similar Chrome-free surface treatment liquid, with or mixtures thereof titaniferous, zirconium, phosphate and
Fluoride is key component, the acid solution of adjustment pH value 1.5-4.0.The solution is without sediment and harmful chromium ion, but it is molten to work as this
Liquid is when the short time, (15 to 30 seconds) were sprayed onto metal material surface, obtained coating out-of-flatness, shows unstable corrosion-resistant
Performance and to paint or coating non-uniform adhesion.The Chinese invention patent of Publication No. CN102409324A discloses nothing
The without phosphorus nano-scale chemical conversion fluid of chromium, is made of titanium salt, zirconates, silicon compound, accelerator, pH regulators, surfactant etc.,
It is entirely free of chromium ion and phosphate, but needs to come by water-washing step after chemical conversion in the nanochemistry converts film preparation
The impurity such as film surface soda acid are removed, increase industrial production cost, and the corrosion resistance duration of the conversion film is not grown, and makes
It is relatively narrow with range.
Therefore it provides a kind of Chrome-free, the aluminum alloy surface film layer with good corrosion resistance and adhesion be this
A field technical problem urgently to be resolved hurrily.
Invention content
It is the purpose of the present invention is to provide a kind of Chrome-free, exempt from water with good corrosion resistance and good adhesion
Marine aluminium alloy surface metal-organic framework film is washed, while optimizing the preparation process of framework film, reduces industrial production cost.
The present invention uses following technical scheme：
A kind of Non-water washing marine aluminium alloy surface metal-organic framework film, the framework film pass through to marine aluminium alloy table
Face is obtained after being handled using treatment fluid, and the treatment fluid is formulated by the component of following content：A concentration of 45% fluorine zirconic acid
0.1-4wt%, a concentration of 50% fluotitanic acid 0.5-3.5wt%, a concentration of 50% hydrofluoric acid 0.2-1wt% are silane coupled
Agent 0.5-2.5wt%, a concentration of 50% phytic acid 0.02-0.1wt%, surplus is water.
Further, the pH value for the treatment of fluid is 2-5.
Further, it is diluted with water during treatment fluid use, it is 2.5- to handle liquid hold-up in solution after dilution
4wt%.
Further, the film-forming process of the metal-organic framework film is as follows：
(1) aluminum alloy surface pre-processes：By aluminum alloy surface with silicon carbide liquid honing to surface roughness at 10 μm
Hereinafter, be placed in acid deoiling degreasing aqueous solution impregnate 2-6 minutes after rinsed well with clear water, repetitive operation twice after dries in the air naturally
It is dry or air-dried；
(2) aluminum alloy chemically conversion processing：Aluminium alloy is soaked in treatment fluid, or treatment fluid is directly sprayed and is closed in aluminium
Gold surface, or treatment fluid is coated on aluminum alloy surface, processing time 40s-10min；
(3) dry：By in step (2) after chemical conversion treatment the direct naturally dry of aluminium alloy or drying.
Further, aluminium alloy is immersed in the processing time in treatment fluid as 2-10min in step (2).
Further, the processing time that treatment fluid directly sprays in aluminum alloy surface in step (2) is 1-3min, spray pressure
Power is 0.08-0.18KPa.
Further, the processing time that treatment fluid is coated on aluminum alloy surface in step (2) is 40-70s.
Further, drying temperature is 40-120 DEG C in step (3), drying time 10-15min.
The metal-organic framework film of the present invention is good to assign aluminium alloy by the way that treatment fluid is coated in aluminum alloy surface
Corrosion resistance.Wherein treatment fluid is aided with the organic matters such as silane coupling agent, phytic acid using fluorine zirconic acid and fluotitanic acid as primary raw material
Ingredient acts on aluminum alloy surface, and the framework film of formation is film forming main salt with Zr-Ti composite inorganic objects, cooperation silane coupling agent,
Phytic acid is auxiliary film forming matter, can be quickly generated in aluminum alloy surface a kind of using Zr-Ti as the oxidation of the diadactic structure of main salt element
Object and its chromium-free passivating film combined with organic matter, and then improve the corrosion resistance of aluminum alloy surface and good to powdery paints
Adhesion.
When being handled aluminum alloy surface using the treatment fluid of the present invention, according to cathode filming mechanism, due to aluminium alloy
Surface causes to form countless primary batteries in surface microcell and electrochemical reaction occurs there are different potentials phase and foreign atom：It is micro-
Dissolving metal occurs for anode region：M-ze-→M z+H occurs for (M represents the metallic element in aluminium alloy), micro cathode area2It is precipitated：2H++
2e-→H2Or O2Reduction：O2+2H2O+4e-→4OH-, to make micro cathode area OH-Ion concentration increases, and pH value increases, and is alumina
The deposition of compound creates favorable conditions, and reaction equation is as follows：
2Al+6H++3ZrF6 2-+5H2O→2AlOF.3ZrOF2+10HF+3H2
2Al+6H++3TiF6 2-+5H2O→2AlOF.3TiOF2+10HF+3H2
On the one hand the formation of the film layer of zirconium and titanium improves the adhesive force between passivating film and powdery paints, while micro-
The consistency that framework film is increased in sight improves its resistance to corrosion.
Meanwhile by adding the organic principles such as silane coupling agent, the unsaturated bond meeting in Organic Ingredients and fluorine in treatment fluid
The metallic bond that zirconic acid, fluotitanic acid hydrolysis are come, which combines, forms chemical bond skeleton, and basis is provided for the deposition of aluminum oxide, comes effective
Improve the resistance to corrosion of metal-organic framework film.Further, the addition of the organic principles such as silane coupling agent so that processing
Liquid can directly dry after being coated in aluminum alloy surface, without washing, simplify the manufacture craft of framework film and reduce industrial water,
By Non-water washing, silane coupler solution can uniformly be retained in the post cure processes of conversion film surface, coating powder or paint
In, silane can hydrolyze, and be bonded between organic resin and inorganic interface, promotion interface fusion, between promotion interface
Binding force.
Non-water washing marine aluminium alloy surface metal-organic framework film of the present invention, has the advantages that：
(1) Non-water washing marine aluminium alloy surface metal-organic framework film of the invention, by closing treatment fluid coated in aluminium
Gold surface, to assign aluminium alloy good corrosion resistance, treatment fluid is aided with silane using fluorine zirconic acid and fluotitanic acid as primary raw material
The organic components such as coupling agent, phytic acid act in aluminum alloy surface, using chromium-free treatment technique, safety and environmental protection, to greatest extent
The pollution to environment is reduced, and framework film obtained helps to improve the corrosion resistance of aluminum alloy surface and to the attached of powdery paints
The property.
(2) Non-water washing marine aluminium alloy surface metal-organic framework film of the invention, using organic original such as silane coupling agent
Material, treatment fluid can directly dry after being coated in aluminum alloy surface, and silane coupler solution can uniformly be retained in conversion film surface,
In the post cure processes of coating powder or paint, silane can hydrolyze, and be bonded between organic resin and inorganic interface,
Promote interface fusion, promote the binding force between interface, without washing, on the one hand simplify the manufacture craft of framework film, improves
Production efficiency, on the other hand saves water resource, reduces production cost.
(3) Non-water washing marine aluminium alloy surface metal-organic framework film of the invention, can make three-level powdery paints peculiar to vessel
Aluminum alloy material surface has excellent adhesion property, compared with existing aluminum alloy surface Trend of Chrome-free passivating film, the scope of application
It is wider, the wet environment of shipbuilding industry can be well adapted to so that the corrosion resistance of aluminum alloy materials, the attachment of powdery paints
The mechanical performances such as power, impact resistance, toughness are all significantly increased.
Specific implementation mode
Below in conjunction with specific embodiment, clear, complete description is carried out to technical scheme of the present invention, it is clear that retouched
The embodiment stated is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, originally
All other embodiment that field those skilled in the art are obtained without making creative work belongs to this
The protection domain of invention.
Metal material used in the following example：
Thickness is the domestic aluminium-magnesium alloy proximate matter 6061 of 1mm, main component Fe：0.35%, Mg：0.8~0.9%,
Si：0.65~0.75%, Cu：0.85~0.95%, Mn：0.15~0.25%, remaining is Al.
According to the acid deoiling degreasing aqueous solution of patent CN201010206660.7 or CN201010543878.1, to above-mentioned
Metal material surface is cleaned, and the surface treatment of the following example is subsequently used for.
Embodiment 1
A kind of Non-water washing marine aluminium alloy surface metal-organic framework film, the framework film pass through to marine aluminium alloy surface
It is obtained after being handled using treatment fluid, treatment fluid is formulated by the component of following content in the present embodiment：A concentration of 45% fluorine
Zirconic acid 0.1wt%, a concentration of 50% fluotitanic acid 1wt%, a concentration of 50% hydrofluoric acid 0.8wt%, silane coupling agent
1wt%, a concentration of 50% phytic acid 0.05wt%, surplus is water, and it is 2 to adjust treatment fluid pH value.It is used during treatment fluid use
Water is diluted, and it is 4wt% to handle liquid hold-up in solution after dilution.
The film-forming process of the present embodiment middle skeleton film is as follows：
(1) aluminum alloy surface pre-processes：Coupons are intercepted from 6061 large-sized aluminium alloy proximate matters, are beaten with silicon carbide waterproof abrasive paper
Surface roughness is milled at 10 μm hereinafter, be placed in acid deoiling degreasing aqueous solution impregnate 2 minutes after rinsed well with clear water, weight
Naturally dry or air-dried after multiple operation twice；
(2) aluminum alloy chemically conversion processing：Aluminium alloy is soaked in 4min in treatment fluid, or treatment fluid directly sprayed in
Aluminum alloy surface, spray pressure 0.08KPa, processing time 3min, or treatment fluid is coated on aluminum alloy surface, when processing
Between be 60s；
(3) dry：By the direct naturally dry of aluminium alloy in step (2) after chemical conversion treatment.
Embodiment 2
A kind of Non-water washing marine aluminium alloy surface metal-organic framework film, the framework film pass through to marine aluminium alloy surface
It is obtained after being handled using treatment fluid, treatment fluid is formulated by the component of following content in the present embodiment：A concentration of 45% fluorine
Zirconic acid 0.4wt%, a concentration of 50% fluotitanic acid 2.5wt%, a concentration of 50% hydrofluoric acid 0.4wt%, silane coupling agent
1.5wt%, a concentration of 50% phytic acid 0.02wt%, surplus is water.It is 3.6 to adjust treatment fluid pH value.Treatment fluid uses process
Middle to be diluted with water, it is 3.2wt% to handle liquid hold-up in solution after dilution.
The film-forming process of the present embodiment middle skeleton film is as follows：
(1) aluminum alloy surface pre-processes：Coupons are intercepted from 6061 large-sized aluminium alloy proximate matters, are beaten with silicon carbide waterproof abrasive paper
Surface roughness is milled at 10 μm hereinafter, be placed in acid deoiling degreasing aqueous solution impregnate 6 minutes after rinsed well with clear water, weight
Naturally dry or air-dried after multiple operation twice；
(2) aluminum alloy chemically conversion processing：Aluminium alloy is soaked in 6min in treatment fluid, or treatment fluid directly sprayed in
Aluminum alloy surface, spray pressure 0.12KPa, processing time 1min, or treatment fluid is coated on aluminum alloy surface, when processing
Between be 40s；
(3) dry：Aluminium alloy in step (2) after chemical conversion treatment is directly dried, drying temperature is 40 DEG C, is dried
The dry time is 15min.
Embodiment 3
A kind of Non-water washing marine aluminium alloy surface metal-organic framework film, the framework film pass through to marine aluminium alloy surface
It is obtained after being handled using treatment fluid, treatment fluid is formulated by the component of following content in the present embodiment：A concentration of 45% fluorine
Zirconic acid 1.0wt%, a concentration of 50% fluotitanic acid 2.4wt%, a concentration of 50% hydrofluoric acid 0.2wt%, silane coupling agent
2.5wt%, a concentration of 50% phytic acid 0.1wt%, surplus is water.It is 5 to adjust treatment fluid pH value.It is used during treatment fluid use
Water is diluted, and it is 2.5wt% to handle liquid hold-up in solution after dilution.
The film-forming process of the present embodiment middle skeleton film is as follows：
(1) aluminum alloy surface pre-processes：Coupons are intercepted from 6061 large-sized aluminium alloy proximate matters, are beaten with silicon carbide waterproof abrasive paper
Surface roughness is milled at 10 μm hereinafter, be placed in acid deoiling degreasing aqueous solution impregnate 4 minutes after rinsed well with clear water, weight
Naturally dry or air-dried after multiple operation twice；
(2) aluminum alloy chemically conversion processing：Aluminium alloy is soaked in 2min in treatment fluid, or treatment fluid directly sprayed in
Aluminum alloy surface, spray pressure 0.1KPa, processing time 2min, or treatment fluid is coated on aluminum alloy surface, when processing
Between be 50s；
(3) dry：Aluminium alloy in step (2) after chemical conversion treatment directly to be dried, drying temperature is 120 DEG C,
Drying time is 10min.
Embodiment 4
A kind of Non-water washing marine aluminium alloy surface metal-organic framework film, the framework film pass through to marine aluminium alloy surface
It is obtained after being handled using treatment fluid, treatment fluid is formulated by the component of following content in the present embodiment：A concentration of 45% fluorine
Zirconic acid 1.2wt%, a concentration of 50% fluotitanic acid 0.5wt%, a concentration of 50% hydrofluoric acid 1wt%, silane coupling agent
0.5wt%, a concentration of 50% phytic acid 0.08wt%, surplus is water.It is 4 to adjust treatment fluid pH value.During treatment fluid use
It is diluted with water, it is 3wt% to handle liquid hold-up in solution after dilution.
The film-forming process of the present embodiment middle skeleton film is as follows：
(1) aluminum alloy surface pre-processes：Coupons are intercepted from 6061 large-sized aluminium alloy proximate matters, are beaten with silicon carbide waterproof abrasive paper
Surface roughness is milled at 10 μm hereinafter, be placed in acid deoiling degreasing aqueous solution impregnate 6 minutes after rinsed well with clear water, weight
Naturally dry or air-dried after multiple operation twice；
(2) aluminum alloy chemically conversion processing：Aluminium alloy is soaked in 10min in treatment fluid, or treatment fluid is directly sprayed
In aluminum alloy surface, spray pressure 0.18KPa, processing time 1.5min, or treatment fluid is coated on aluminum alloy surface, place
The reason time is 70s；
(3) dry：By the direct naturally dry of aluminium alloy in step (2) after chemical conversion treatment.
To the aluminum alloy materials electrostatic spraying three-level powdery paints obtained in embodiment 1-4, curing process is carried out later, Gu
It is 210 DEG C to change temperature, hardening time 15min.Material after solidification is carried out to acid salt spray test respectively, constant-temperature condensation water is surveyed
Examination, resistance to SO2Test and filiform corrosion test, specific test condition are as follows：
(1) acid salt spray test
Test basis is ISO 9227：2012, test equipment Q-FOG/SSP1100, length of testing speech 2000 hours, technology
It is required that according to QUALICOAT 14 editions：Grade of blistering is according to ISO 4628-2：≤2(S2)；Along a stroke lattice infiltrating area：≤16mm2/
10cm；Draw lattice individually maximum penetration length in edge：≤4mm.
(2) constant-temperature condensation water is tested
Test foundation is ISO 6270-2：2005, test equipment LIEBISCH K300, length of testing speech 2000 hours, technology
It is required that according to QUALICOAT 14 editions：Grade of blistering is according to ISO 4628-2：≤2(S2)；Draw lattice individually maximum penetration length in edge：
≤1mm。
(3) resistance to SO2Test
Test foundation is DIN EN ISO 3231,400 Co.Liebsche of test equipment A-SC KBG, length of testing speech
24cycles, technology are required according to QUALICOAT 14 editions：Without discoloration or blistering grade according to ISO 4628-2：≤2(S2)；Edge
Draw lattice individually maximum penetration length：≤1mm.
(4) filiform corrosion is tested
Test foundation is DIN EN ISO 4623-2:2004, test equipment Climate Chamber Co Binder are surveyed
Try duration 1000 hours, technology is required according to QUALICOAT 14 editions：Filiform corrosion maximum length：≤ 4mm, filiform corrosion are average
Length：≤ 2mm, filiform corrosion number：≤20/10cm.
The test result that embodiment 1-4 is carried out is as shown in table 1-4.
The acid salt fog test result of table 1
2 constant-temperature condensation water test result of table
3 resistance to SO of table2Test result
| Discoloration or blistering grade | Single maximum penetration length/mm | |
| Embodiment 1 | 0(S0) | 0 |
| Embodiment 2 | 0(S0) | 0 |
| Embodiment 3 | 0(S0) | 0 |
| Embodiment 4 | 0(S0) | 0 |
4 filiform corrosion test result of table
By table 1-4 it is found that Non-water washing marine aluminium alloy surface metal-organic framework film of the present invention so that aluminium alloy material
Material has good corrosion resistance and the higher adhesion to powdery paints to three-level powdery paints, since three-level powder applies
Material has the mechanical performances such as stronger toughness, impact resistance relative to firsts and seconds powdery paints so that of the invention exempts from water
The protective effect excellent to marine aluminium alloy material can be played by washing marine aluminium alloy surface metal-organic framework film.Meanwhile this hair
Bright Non-water washing marine aluminium alloy surface metal-organic framework film is in film forming procedure, without being washed after chemical conversion,
It directly dries, simplifies production technology, and save water resource, reduce production cost.
The present invention is further described by specific embodiment above, it should be understood that, here specifically
Description, should not be construed as the restriction to the spirit and scope of the invention, and one of ordinary skilled in the art is reading this explanation
The various modifications made to above-described embodiment after book belong to the range that the present invention is protected.
Claims (8)
1. a kind of Non-water washing marine aluminium alloy surface metal-organic framework film, which is characterized in that the framework film passes through to peculiar to vessel
Aluminum alloy surface is obtained after being handled using treatment fluid, and the treatment fluid is formulated by the component of following content：A concentration of 45%
Fluorine zirconic acid 0.1-4wt%, a concentration of 50% fluotitanic acid 0.5-3.5wt%, a concentration of 50% hydrofluoric acid 0.2-1wt%,
Silane coupling agent 0.5-2.5wt%, a concentration of 50% phytic acid 0.02-0.1wt%, surplus is water.
2. Non-water washing marine aluminium alloy surface metal-organic framework film according to claim 1, which is characterized in that described
The pH value for the treatment of fluid is 2-5.
3. Non-water washing marine aluminium alloy surface metal-organic framework film according to claim 2, which is characterized in that described
It is diluted with water during treatment fluid use, it is 2.5-4wt% to handle liquid hold-up in solution after dilution.
4. Non-water washing marine aluminium alloy surface metal-organic framework film according to claim 3, which is characterized in that described
The film-forming process of framework film is as follows：
(1) aluminum alloy surface pre-processes：By aluminum alloy surface with silicon carbide liquid honing to surface roughness at 10 μm hereinafter,
Be placed in acid deoiling degreasing aqueous solution after impregnating 2-6 minutes and rinsed well with clear water, repetitive operation twice after naturally dry or
It air-dries；
(2) aluminum alloy chemically conversion processing：Aluminium alloy is soaked in treatment fluid, or treatment fluid is directly sprayed in aluminium alloy table
Face, or treatment fluid is coated on aluminum alloy surface, processing time 40s-10min；
(3) dry：By in step (2) after chemical conversion treatment the direct naturally dry of aluminium alloy or drying.
5. Non-water washing marine aluminium alloy surface metal-organic framework film according to claim 4, which is characterized in that step
(2) aluminium alloy is immersed in the processing time in treatment fluid as 2-10min in.
6. Non-water washing marine aluminium alloy surface metal-organic framework film according to claim 4, which is characterized in that step
(2) processing time that treatment fluid directly sprays in aluminum alloy surface in is 1-3min, spray pressure 0.08-0.18KPa.
7. Non-water washing marine aluminium alloy surface metal-organic framework film according to claim 4, which is characterized in that step
(2) processing time that treatment fluid is coated on aluminum alloy surface in is 40-70s.
8. Non-water washing marine aluminium alloy surface metal-organic framework film according to claim 4, which is characterized in that step
(3) drying temperature is 40-120 DEG C in, drying time 10-15min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114855153A (en) * | 2022-06-13 | 2022-08-05 | 安徽光铧帝业化学有限公司 | Washing-free chromium-free treatment process before coating of aluminum profile |
| US11555250B2 (en) * | 2020-04-29 | 2023-01-17 | Applied Materials, Inc. | Organic contamination free surface machining |
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