CN110359072A - Produce the method with the aluminium parts of colored surface - Google Patents
Produce the method with the aluminium parts of colored surface Download PDFInfo
- Publication number
- CN110359072A CN110359072A CN201910276532.0A CN201910276532A CN110359072A CN 110359072 A CN110359072 A CN 110359072A CN 201910276532 A CN201910276532 A CN 201910276532A CN 110359072 A CN110359072 A CN 110359072A
- Authority
- CN
- China
- Prior art keywords
- salt
- component
- electrolyte
- aluminium parts
- aluminium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/20—Electrolytic after-treatment
- C25D11/22—Electrolytic after-treatment for colouring layers
-
- 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
-
- 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
-
- 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
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
- C25D11/246—Chemical after-treatment for sealing layers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/30—Electroplating: Baths therefor from solutions of tin
Abstract
The method that a kind of claimed production has the aluminium parts of colored surface, this method include the steps that applying colouring component by the surface anodization of component and by electrolysis.The method is characterized in that electrolyte includes the salt of Sn salt and another divalent metal.By the combination of two or more metal salts during the electrolytic coloring of anodization layer, fine and close strong coloring can be obtained on aluminum surfaces.
Description
Technical field
The present invention relates to a kind of methods that production has the aluminium parts of colored surface, wherein this method is by the surface of component
Anodization and apply colouring component by being electrolysed.There is colored surface by what this method made the invention further relates to a kind of
Aluminium parts.
Background technique
Aluminium and the component made of aluminium alloy automotive field have be widely applied, such as motor vehicles vehicle body with
And in the case where ornamental member (such as ornamental strip).It is generally aerobic in aluminium surface offer by anodic oxidation (anodization) first
Change protective layer.Then can for example it be coloured using organic or inorganic dyestuff to oxide skin(coating) is formed by.Organic dyestuff lacks
Point does not have UV stability for them, therefore after some time, surface is visually unsightly.
Another kind makes the method electrolytic coloring (Colinal processing) of oxide skin(coating) dip dyeing color.Electrolyte includes coloring
Metal salt, generally stannous sulfate (tin (II) sulfate).By the process, metallic is infiltrated into the hole of layer, and
And the hole of metal filling generates resistance to optical colour by the effect for absorbing and scattering.Many tones can be obtained by electrolytic coloring；
Disadvantage is just to be able to achieve fine and close and uniformly colour only in the case where thickness is more than 12 μm.Due to component metal and be placed in
The coefficient of expansion between layer thereon is different, and the layer applied can be peeling-off, and especially at high temperature, and metal is corrosion-resistant
Property it is impaired.
Powder coating aluminium parts are often used in replacing electrolytic coloring.Its disadvantage is that the powdery paints of coating can be shelled rapidly
From especially at edge and corner.In addition, powder coating cannot show the desired typical metal surface of many customers.
Summary of the invention
Therefore, there is the method for the aluminium parts of colored surface, Neng Gousheng it is an object of the present invention to provide a kind of production
At the stabilization with very big color depth and the coloring layer of resistance to UV.Another object of the present invention is to provide a kind of with this seed type
Coloring layer component, a part of the component more particularly motor vehicle and most preferably be motor vehicle body one
Part, or be the appurtenances for being installed on the vehicle body of motor vehicles.
According to the present invention, for this method, the purpose through the invention realize by claimed method.With regard to component
Speech, the purpose are realized also by claimed component.
Therefore, subject of the present invention is a kind of method of aluminium parts of the production with colored surface, and this method specifically includes
Following steps:
By the surface anodization of component,
Apply colouring component by electrolysis, and
Wherein
Electrolyte includes the salt of Sn salt and an other divalent metal.
Detailed description of the invention
Fig. 1 shows a kind of coating that can be made by means of the present invention.
Specific embodiment
According to the present invention, it was surprisingly found now that by during the electrolytic coloring of anodization layer by two or more
Kind metal salt combination, can obtain fine and close strong coloring on aluminum surfaces.In this case, these layer it is relatively thin, therefore
The difference of the coefficient of expansion of coating and metal is barely detectable at high or low temperatures, and coating keeps substantially complete.
The new method is particularly suitable for colouring the aluminium parts of all kinds, and wherein term " aluminium parts " is covered by aluminium
With component made of aluminium alloy or other parts.Specifically, component can be the component of motor vehicles, and more preferably machine
A part of motor-vehicle bodies, or the appurtenances for being installed on the vehicle body of motor vehicles.
In the first step of this method, by aluminium parts anodization.Anodization can carry out by conventional methods.As anode
Change as a result, foring oxide protective layer in aluminium surface.The layer is fine crystals and has hole, and the hole is in next step
Middle receiving coloring material.In the next step of this method, apply the coloring layer by being electrolysed.According to the present invention, electrolyte
A kind of salt including Sn salt and another divalent metal as component.
Aforementioned divalent metal salt is preferably selected from the salt of Ni, Co, Cu, Mn and/or Fe.All water soluble salts close
It fits, especially halide and sulfate.It has been found that using the combination of Sn salt and another metal salt, even if working as the thickness of this layer
When relatively low, fine and close coloring layer also can be generated.
Particular advantage of the present invention is that also can get black layer.It is a kind of particularly preferred group be combined into using Sn (II) salt with
Ni (II) salt more particularly uses SnSO4 and NiSO4.
Both salt can be added in electrolyte by conventional methods.Sn salt is dense in electrolyte or electrolyte solution
Degree is preferably 0.1 to 15g/l.The concentration of another metal salt is preferably 2 between 200g/l.If Sn salt in electrolyte
Amount 1 between 10g/l, and the amount of another salt 30 between 150g/l, then in terms of color depth and stability
Especially good result can be obtained.The weight ratio of Sn salt and another metal salt is preferably between 1:20 and 1:200, more particularly
For 1:30 to 1:100.
Coloring electrolysis can be carried out in a usual manner, be preferably applied alternating voltage.Other components of electrolyte include sulfuric acid,
Ferrous sulfate (iron (II) sulfate), sulfosalicylic phthalate (sulfophthalic acid) and/or sulfosalicylic acid
(sulfosalicylic acid).The pH value of electrolyte is preferably higher than 1, more particularly less than 1 to 2.Electrolysis is preferably in room temperature
It is carried out at a temperature of to slightly elevated supreme about 22 DEG C.Electrolytic coloring is usually carried out by alternating voltage.
Special advantage of the invention is, by the combination of two or more metal salts, can obtain with colouring deeply
Colored surface.The thickness of applied layer is electrolysed preferably between 6 and 11 μm, more particularly between 6 and 10 μm.Thick another of low layer
One advantage is that can be electrolysed within than the time according to method much shorter known in the art；Therefore, it can will be electrolysed
The duration of coloring process reduces 30%.
The implementation of electrolysis
It will be placed in electrolytic cell by the aluminium parts of method anodization known in the art.Electrolyte contains the sulphur of 5g/l
Acid, nickel sulfate * 6H2O of 100g/l, the ferrous sulfate of 1.7g/l, the stannous sulfate of 2g/l and the sulfosalicylic phthalate of 15g/l
SSA, and temperature is 20 DEG C.It is electrolysed by applying 15 to 18V alternating voltage.Electrolysis carries out 10 minutes.Then will
Component takes out from electrolytic cell, rinses, and carries out hot deionized water densification in 15 minutes in a known way.Here, passing through water
Intercalation and associated volume increase, and are densified anodization layer by known way.
In last method and step, sol-gel technology is carried out to electrolysed component, wherein coating 2.5 μ m-thicks
Coating.
According to the description below to preferred illustrative embodiment of the present invention, and in conjunction with attached drawing, other feature of the invention and
Advantage will become obvious.
In the accompanying drawings, Fig. 1 shows a kind of coating that can be made by means of the present invention.
For colouring component by electrolytic deposition on anodized aluminium surface, electrolyte is by Sn salt and another divalent metal salt
The salting liquid of composition.To obtaining anodization layer, the anodization layer include aluminium oxide and deposited during electrolysis two
Kind metal.Then, finishing coat is coated by sol/gel operation.
Claims (11)
1. producing the method with the aluminium parts of colored surface, the described method comprises the following steps:
By the surface anodization of the component,
Apply colouring component by electrolysis,
It is characterized in that, electrolyte includes the salt of Sn salt and an other divalent metal.
2. the method according to claim 1, wherein salt of the other salt from Ni, Co, Cu, Mn and/or Fe
In select.
3. method according to claim 1 or 2, which is characterized in that the Sn salt and other salt are in the form of sulfate
It uses.
4. according to the method in any one of claims 1 to 3, which is characterized in that the Sn salt described in the electrolyte
Concentration is 0.1 to 15g/l.
5. method according to claim 1 to 4, which is characterized in that the concentration of the other salt be 2 to
200g/l。
6. the method according to any one of claims 1 to 5, which is characterized in that the Sn salt described in the electrolyte and
The ratio of other salt is 1:20 to 1:200.
7. method according to any one of claim 1 to 6, which is characterized in that the electrolyte has less than 1 to 2
PH value.
8. method according to any one of claim 1 to 7, which is characterized in that the institute in the downstream procedures of the method
Component is stated equipped with sol/gel coating.
9. method according to any one of claim 1 to 8, which is characterized in that produce black surface.
10. method according to any one of claim 1 to 9, which is characterized in that the thickness of the layer electrolytically applied
It is 6 to 11 μm, preferably 6 to 10 μm.
11. aluminium parts have black surface and produce according to method according to any one of claim 1 to 10.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18166369.1A EP3553208A1 (en) | 2018-04-09 | 2018-04-09 | Method of manufacturing an aluminium component having a coloured surface |
| EP18166369.1 | 2018-04-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110359072A true CN110359072A (en) | 2019-10-22 |
Family
ID=61952593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910276532.0A Pending CN110359072A (en) | 2018-04-09 | 2019-04-08 | Produce the method with the aluminium parts of colored surface |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20190309434A1 (en) |
| EP (1) | EP3553208A1 (en) |
| CN (1) | CN110359072A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3773631A (en) * | 1970-10-16 | 1973-11-20 | Blasberg Gmbh & Co Kg Friedr | Aqueous electrolytic bath for coloring anodic oxide layers on aluminum and aluminum alloy substrates and process for coloring said substrates |
| US3787295A (en) * | 1970-04-02 | 1974-01-22 | Alusuisse | Method of electrolytic coloring of oxide layers on aluminum and aluminum base alloys |
| CA1049949A (en) * | 1975-06-09 | 1979-03-06 | Eberhard Keller | Process for the production of combination dyeing on workpieces of aluminum or aluminum alloys |
| US4226680A (en) * | 1977-06-06 | 1980-10-07 | Alcan Research And Development Limited | Process for electrolytic coloration of anodized aluminium |
| US4310586A (en) * | 1978-01-17 | 1982-01-12 | Alcan Research And Development Limited | Aluminium articles having anodic oxide coatings and methods of coloring them by means of optical interference effects |
| US4401525A (en) * | 1978-11-18 | 1983-08-30 | Th. Goldschmidt Ag | Process for coloring aluminum electrolytically with metal salts |
| CN1039452A (en) * | 1988-07-19 | 1990-02-07 | 亨克尔两合股份公司 | Carry out the method for electrolytic metal salt dyeing through the aluminium surface that anodic polarization is handled |
| CN102534721A (en) * | 2012-02-17 | 2012-07-04 | 上海安美特铝业有限公司 | Method for preparing solar selective absorption film |
| EP2824221A1 (en) * | 2013-07-12 | 2015-01-14 | Eloxal Höfler GmbH | Method for producing a corrosion-resistant, wear-resistant aluminium substrate |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2219437B1 (en) * | 1973-02-23 | 1975-08-22 | Pechiney Aluminium | |
| AT340219B (en) * | 1975-05-13 | 1977-12-12 | Keller Eberhard | PROCESS FOR CREATING COMBINATION COLORS ON A WORKPIECE MADE OF ALUMINUM OR ALUMINUM ALLOYS |
| JPS5228436A (en) * | 1975-08-29 | 1977-03-03 | Shokosha Kk | Dyeing process for aluminum and its alloy |
| JPS61113781A (en) * | 1984-11-08 | 1986-05-31 | Tokuyama Soda Co Ltd | Cathode for generating hydrogen |
| US20050056546A1 (en) * | 2003-09-17 | 2005-03-17 | Kia Sheila Farrokhalaee | Aluminum vehicle body |
| US20050173255A1 (en) * | 2004-02-05 | 2005-08-11 | George Bokisa | Electroplated quaternary alloys |
| CN102424999B (en) * | 2011-12-02 | 2016-04-13 | 沈阳工业大学 | A kind of aluminium alloy anode oxide film electrolytic the treatment process of black |
| AT514447B1 (en) * | 2013-06-28 | 2015-10-15 | Pramer Gerhard Dipl Ing Fh | Process for the electrochemical production of spectrally selective absorber layers on an aluminum substrate |
| FR3068712B1 (en) * | 2017-07-10 | 2021-10-01 | Constellium Rolled Products Singen Gmbh & Co Kg | ALUMINUM ALLOY LAMINATED PRODUCT WITH INTENSE IRIDESCENT COLORS |
-
2018
- 2018-04-09 EP EP18166369.1A patent/EP3553208A1/en active Pending
-
2019
- 2019-04-08 CN CN201910276532.0A patent/CN110359072A/en active Pending
- 2019-04-08 US US16/378,057 patent/US20190309434A1/en not_active Abandoned
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3787295A (en) * | 1970-04-02 | 1974-01-22 | Alusuisse | Method of electrolytic coloring of oxide layers on aluminum and aluminum base alloys |
| US3773631A (en) * | 1970-10-16 | 1973-11-20 | Blasberg Gmbh & Co Kg Friedr | Aqueous electrolytic bath for coloring anodic oxide layers on aluminum and aluminum alloy substrates and process for coloring said substrates |
| CA1049949A (en) * | 1975-06-09 | 1979-03-06 | Eberhard Keller | Process for the production of combination dyeing on workpieces of aluminum or aluminum alloys |
| US4226680A (en) * | 1977-06-06 | 1980-10-07 | Alcan Research And Development Limited | Process for electrolytic coloration of anodized aluminium |
| US4310586A (en) * | 1978-01-17 | 1982-01-12 | Alcan Research And Development Limited | Aluminium articles having anodic oxide coatings and methods of coloring them by means of optical interference effects |
| US4401525A (en) * | 1978-11-18 | 1983-08-30 | Th. Goldschmidt Ag | Process for coloring aluminum electrolytically with metal salts |
| CN1039452A (en) * | 1988-07-19 | 1990-02-07 | 亨克尔两合股份公司 | Carry out the method for electrolytic metal salt dyeing through the aluminium surface that anodic polarization is handled |
| CN102534721A (en) * | 2012-02-17 | 2012-07-04 | 上海安美特铝业有限公司 | Method for preparing solar selective absorption film |
| EP2824221A1 (en) * | 2013-07-12 | 2015-01-14 | Eloxal Höfler GmbH | Method for producing a corrosion-resistant, wear-resistant aluminium substrate |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20190309434A1 (en) | 2019-10-10 |
| EP3553208A1 (en) | 2019-10-16 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191022 |