CN105849315B - The base material of color development treatment and base material color development treatment method for it - Google Patents
The base material of color development treatment and base material color development treatment method for it Download PDFInfo
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- CN105849315B CN105849315B CN201480071367.0A CN201480071367A CN105849315B CN 105849315 B CN105849315 B CN 105849315B CN 201480071367 A CN201480071367 A CN 201480071367A CN 105849315 B CN105849315 B CN 105849315B
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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
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
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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
- C23C22/60—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 alkaline aqueous solutions with pH greater than 8
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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
- C23C22/60—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 alkaline aqueous solutions with pH greater than 8
- C23C22/62—Treatment of iron or alloys based thereon
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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
- C23C22/60—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 alkaline aqueous solutions with pH greater than 8
- C23C22/64—Treatment of refractory metals or alloys based thereon
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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
- C23C22/73—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 characterised by the process
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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
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
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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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/324—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal matrix material layer comprising a mixture of at least two metals or metal phases or a metal-matrix material with hard embedded particles, e.g. WC-Me
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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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
Abstract
The present invention relates to a kind of base material of color development treatment and for its base material color development treatment method, the base material can improve the homogenieity and corrosion resistance of substrate surface, being capable of equably display color in a short time.Therefore, the base material through color development treatment can be efficiently used in using the construction exterior material of magnesium material, automobile decoration, the especially electric appliances such as cover for mobile phone body component, electronic part material field.
Description
Technical field
The present invention relates to a kind of base material comprising magnesium through color development treatment and for its base material color development treatment method.
Background technology
Magnesium is as the metal for belonging to ultralight metal in practical metal, and excellent in abrasion resistance, anti-Japanese photosensitiveness is strong, and environmental protection, but
There are problems that being difficult to embody metal-like and multiple color.In addition, the metal very active as electrochemistry, great work
Property, therefore when color development treatment does not carry out, very rapidly corrode in air or solution, therefore deposited in terms of commercial Application
Many difficult.
In recent years, due to the comprehensive lightweight trend of industry, magnesium industry is attracted attention, in cover for mobile phone body component
In equal electric appliances, electronic part material field, the housing material of metal-like becomes trend, improves the upper of magnesium to actively develop
State the research of problem.
As a result, KR published patent the 2011-0016750th is disclosed and a kind of is done in the substrate surface formed by magnesium alloy
Formula coating to realize metal-like and ensures corrosion proof PVD- sol-gal processes containing progress collosol and gel coating after metallics,
Disclosed in KR published patent the 2011-0134769th it is a kind of using chemical grinding to containing magnesium substrate surface assign light
Pool, in the above-mentioned base material of alkaline electrolyte Anodic Oxidation dissolved with pigment, to make the anodizing of surface staining.
But for the PVD- sol-gal processes, although realizing metal-like in substrate surface, not magnesium is intrinsic
Metal-like, there are problems that being difficult to show a variety of colors.In addition, when carrying out color development treatment using anodizing, not only
Opaque oxidation film can be formed in substrate surface, and be difficult to realize the intrinsic metal-like of metal.
Therefore, for the functionization of containing magnesium base material, there is an urgent need to it is a kind of can be by the surface of above-mentioned base material
Learn, electrochemistry or physical treatment, to improve it is corrosion proof simultaneously, can show the technology of required color on its surface.
Invention content
(1) technical problems to be solved
Unresolved described problem, the purpose of the present invention is to provide a kind of base materials through color development treatment including magnesium.
Another object of the present invention is to provide a kind of color development treatment methods of the base material.
(2) technical solution
To achieve the goals above, the present invention provides a kind of base material of color development treatment in one embodiment, including：Including
The matrix of magnesium；And film, it is formed in described matrix, and containing with the compound represented by following chemical formula 1；Wherein, exist
Mean color coordinates between each point for arbitrary 3 points that the arbitrary region (horizontal 1cm and vertical 1cm) on the film includes are poor
(Δ L*, Δ a*, Δ b*) meets the condition of one or more of Δ L* ＜ 0.6, Δ a* ＜ 0.6 and Δ b* ＜ 0.5：
[chemical formula 1]
M(OH)m
In the chemical formula 1, M includes being selected from by a kind or more of Na, K, Mg, Ca and Ba group formed, and m is 1 or 2.
In addition, the present invention provides a kind of color development treatment method of base material in another embodiment, this method includes including
The step of matrix of magnesium is impregnated in hydroxide solution.
(3) advantageous effect
The base material through color development treatment of the present invention forms to contain and change shown in chemical formula 1 on the surface of the matrix comprising magnesium
The film for closing object, homogenieity and corrosion resistance so as to make substrate surface improve, and can equably show face in a short time
Color.Therefore, the base material through color development treatment can be in the construction exterior material using magnesium material, automobile decoration, especially
In the electric appliances such as cover for mobile phone body component, electronic part material field, it can be efficiently used.
Description of the drawings
Fig. 1 is the image for showing the CIE colour spaces.
Fig. 2 be show include the matrix structure through color development treatment of the film of patterning sectional view.
Fig. 3 is the sectional view for showing matrix structure, and the matrix structure is included in the matrix surface comprising magnesium and carries out pattern
Before change, the step of further carrying out being impregnated in hydroxide solution, to include patterning.
Fig. 4 is in one embodiment, to utilize the thickness of film under determination of transmission electron microscopy difference dip time
Image：Wherein, A is the base material that dip time is 10 minutes, and B is the base material that dip time is 170 minutes, and C is that dip time is
240 minutes base materials.
Fig. 5 is in one embodiment, in Evaluation of Corrosion Resistance, according to the figure for shooting substrate surface whether color development treatment
Picture：At this point, A is the base material of non-color development treatment, B is the base material through color development treatment.
Fig. 6 be show in one embodiment based on color development treatment whether and dip time base material potentiodynamic polarization it is bent
The curve graph of line (potentiodynamic polarization curve).
Preferred forms
The present invention can carry out various deformation, and can have a variety of different embodiments, illustrate specific reality in the accompanying drawings
Example is applied, and is described in detail.
But the present invention is not limited to these specific embodiments, it is thus understood that be included in the thought and skill of the present invention
Having altered within the scope of art, equivalent and substitute are included in the present invention.
In the present invention, the terms such as " comprising " or " having " are it should be appreciated that be only intended to point out described in specification
Feature, number, step, action, the presence of element, component or combination thereof, in advance exclude one or one
Above other features, number, step, action, element, component or combination thereof there is a possibility that or it is additional.
Also, it is understood that the attached drawing of the present invention zooms in or out show for convenience of description.
In the following, with reference to attached drawing, the present invention is described in detail, independently with the symbol of attached drawing, identical or corresponding composition
Element uses identical reference numeral, and the repeated explanation to it is omitted.
In the present invention, " chromaticity coordinates " refers to International Commission on Illumination (Commossion International de 1 '
Eclairage, CIE) as defined in the color value CIE colour spaces coordinate, any position in the CIE colour spaces can use L*, a*, b*
3 kinds of coordinate values indicate.
Wherein, L* values indicate that lightness, L*=0 indicate that black (black), L*=100 indicate white (white).In addition, a*
Which that the color with the chromaticity coordinates is partial in pure red (pure magenta) or pure green (pure green) be value indicate
One color, b* indicate that the color with the chromaticity coordinates is partial to gilvous (pure yellow) and pure blue (pure blue)
Which of color.
Specifically, there is the a* values range of-a to+a, the maximum value (a*max) of a* to indicate pure red (pure
Magenta), the minimum value (a*min) of a* indicates pure green (pure green).For example, pure to be partial to when a* values are negative
The color of green, a* values are to be partial to pure red color when being positive number.When comparing a*=80 and a*=50, a*=80 phases are indicated
Pure red seat is positioned closer to than a*=50.In addition, the b* has the range of-b to+b.The maximum value (b*max) of b*
Indicate that gilvous (pure yellow), the minimum value (b*min) of b* indicate pure blue (pure blue).For example, a* values are negative
It is the color for being partial to gilvous when number, when positive number is the color for being partial to pure blue.When comparing b*=80 and b*=50, indicate
B*=80 is positioned closer to pure red position compared to b*=50.
Moreover, in the present invention, " aberration " or " chromaticity coordinates is poor " refer in cie color space between two colors away from
From.That is, big apart from distal color difference, for the nearlyr color of distance almost without difference, this can pass through the Δ E* tables of following mathematical expression 3
Show.
[mathematical expression 5]
In turn, in the present invention, so-called " required grain pattern ", it is meant that according to the purposes of base material, surface in a planned way and/
Or the pattern intentionally imported, at this point, the apperance can include all not having the form of systematicness and with systematicness
Form.
Moreover, in the present invention, " wavelength conversion layer " refers to reflection, refraction, scattering, diffraction by adjusting light etc. to control
The layer of the wavelength of incident light processed makes further refraction and scattering of the light for reflecting and/or scattering in the film in face coat
It minimizes, induces light reflection, so as to play the effect for the color for keeping developing the color by film.
Finally, in the present invention, unit " T " indicates the thickness of the base material comprising magnesium, can be identical as unit " mm ".
The present invention provides a kind of base material through color development treatment comprising magnesium and the base material color development treatment method for it.
In the past, it is known that the method for display color on the material comprising magnesium have using containing metallics or pigment etc. in material
PVD- sol-gal processes, the anodizing etc. that material surface is coated.But the method is likely to decrease the durable of base material
Property.Additionally, there are be difficult to material surface equably display color, coating film layer be easy to be stripped and cannot be satisfied reliable
The problem of property.In particular, the metal-like that the method is intrinsic due to that can not embody metal, thus exist and be difficult in construction exterior
The problem of electric appliances such as the shell of material, automobile decoration, especially mobile product, electronic part material field utilize.
It is in order to overcome the problems, such as this, the present invention propose the present invention comprising base material of the magnesium through color development treatment and be used for it
Base material color development treatment method.
The base material through color development treatment of the present invention, by being formed uniformly film, Neng Gou in the matrix surface comprising magnesium
Equably display color can show a variety of colors according to the thickness of the film of formation in short time.Moreover, with can
The advantages of making the homogenieity of substrate surface and corrosion resistance improve.
The present invention is described in detail below.
The present invention provides a kind of base material of color development treatment in one embodiment, including：Include the matrix of magnesium；And it is thin
Film is formed on the matrix, contains following formula 1 compound represented；
Arbitrary 3 points that the arbitrary region (horizontal 1cm and vertical 1cm) being present on the film includes, between each point
Mean color coordinates poor (Δ L*, Δ a*, Δ b*) meet one or more of Δ L* ＜ 0.6, Δ a* ＜ 0.6 and Δ b* ＜ 0.5
Condition,
[chemical formula 1]
M(OH)m
In the chemical formula 1,
M includes being selected from by a kind or more of Na, K, Mg, Ca and Ba group constituted, and m is 1 or 2.
Specifically, the base material through color development treatment can meet two or more in the condition, it more specifically, can
All to meet the condition.
In one embodiment, measure at arbitrary 3 points be present on the base material of the color development treatment of the present invention in the CIE colour spaces
In chromaticity coordinates.As a result, chromaticity coordinates difference is Δ L*<0.06、0.23≤Δa*<0.31 and 0.01≤Δ b*<0.21, it is all full
The foot condition.In addition, Δ E* is 0.237≤Δ E* derived from the measured value<0.375, it is thus identified that the deviation of chromaticity coordinates
Notable very little.This means that the color of the magnesium through color development treatment of the present invention is uniformly (with reference to experimental example 1).
The color embodied in the base material through color development treatment, scattering and the refraction that the light for being incident on surface is utilized are former
Reason is adjusted by the average thickness for the film being formed uniformly in substrate surface, controls scattering and the refractive index of incident light, to
Required color can be equably shown in substrate surface.
At this point, described matrix can be through color development treatment base material with carry out color development treatment before base material it is identical, as institute
Matrix is stated, as long as comprising magnesium and frame can be used as in electric appliance, electronic product Material Field, then its kind is not specially limited
Class or form.As an example, the magnesium substrates formed with magnesium can be used, have in Dispersion on surface magnesium form stainless steel or
Titanium (Ti) base material etc..
In addition, the film is not particularly limited average thickness, but specifically, can be 50nm to 2 μm, it is more specific and
Speech can be 100nm to 1 μm.
In turn, the film can have the patterning that required grain pattern is shown on the matrix comprising magnesium, the grain pattern
It can be embodied by the mean thickness variation of film.
With reference to figure 2 and Fig. 3, for the film 102,202, when for pattered region 103,203, including film
Pattered region 103,203 and non-patterned areas 104,204, the pattered region 103,203 in matrix 101,201) on
Film is not formed or is formed with lower thickness, there can be defined mean thickness variation with non-patterned areas 104,204.
At this point, the grain pattern can pass through the scattering of incident light and refractive index caused by the mean thickness variation by film (102 and 202)
Difference embodies.
As an example, the mean thickness variation of the film can meet the condition of following mathematical expressions 1,
[mathematical expression 1]
5nm≤│T1-T22.0 μm of │ ＜
In the mathematical expression 1,
T1Indicate the Film Average Thickness of pattered region,
T2Indicate the Film Average Thickness of non-patterned areas.
Specifically, the mean thickness variation of the film can be 5nm or more, be less than 2.0 μm, it more specifically, can
Think 5nm to 100nm, 50nm to 0.5 μm or 0.5 μm or more, be less than 2.0 μm.The present invention can be in the mean thickness variation
In range, the larger aberration in induced patterning region and non-patterned areas more effectively shows grain pattern.
In addition, the base material through color development treatment of the present invention includes film on matrix, so as to improve corrosion resistance.Specifically
For, the base material through color development treatment can meet following mathematical expressions 2 in Evaluation of Corrosion Resistance,
[mathematical expression 2]
Corrosion rate (Corr.Rate)≤0.01
In the mathematical expression 2,
Corrosion rate (Corr.Rate) indicates in room temperature, 0.5 weight % brine, passes through potentiodynamic polarization measuring
The base material through color development treatment extent of corrosion, unit be mm/.Wherein, room temperature can be 25 ± 2 DEG C.
In one embodiment, it using the base material through color development treatment and the base material of non-color development treatment as object, executes
Potentiodynamic polarization experiment in room temperature, 0.5 weight % brine, has rated the corrosion resistance of base material.As a result, confirmed just through colour developing
For the base material of processing, corrosion rate (Corr.Rate) is 0.0004 to 0.0013mm/, on the other hand, non-color development treatment
The corrosion rate of base material is 0.4322mm/.From this result it is found that the base material through color development treatment of the present invention is formed on surface
Film, to compared with the base material of non-color development treatment, have more excellent corrosion resistance (with reference to experimental example 3 and 4).
At this point, as long as the film can make the light scattering and refraction of being incident on surface, then it is not defined especially.Tool
For body, the film can be sodium hydroxide (NaOH), potassium hydroxide (KOH), magnesium hydroxide (Mg (OH)2), calcium hydroxide
(Ca(OH)2) and barium hydroxide (Ba (OH)2) in it is more than a certain kind, can be magnesium hydroxide (Mg (OH) more specifically2)。
In one embodiment, the X-ray diffraction analysis for the film that the base material through color development treatment includes is performed.
As a result, confirmed the film have be identified as 18.5 ± 1.0 ° of 2 θ, 38.0 ± 1.0 °, 50.5 ± 1.0 °, 58.5 ±
1.0 °, 62.0 ± 1.0 ° and 68.5 ± 1.0 ° of diffraction peak.It means that substrate surface formed film by with hydrogen-oxygen
Magnesium hydroxide (the Mg (OH) of magnesite (brucite) crystalline2) constitute.From this result it is found that the present invention through color development treatment
Base material include magnesium hydroxide (Mg (OH)2) (with reference to experimental example 2).
In addition, the base material through color development treatment of the present invention can also include the wavelength conversion layer formed on film and surface
Coating.
At this point, as the wavelength conversion layer, as long as the light that can make to reflect from film and/or scatter further exists
Refraction occurs for face coat and scattering is realized and minimized, and keeps the color to develop the color by film by inducing light reflection, then
Its type or form can be not specially limited and use.Specifically, the wavelength conversion layer may include selected from by aluminium
(Al), chromium (Cr), titanium (Ti), golden (Au), molybdenum (Mo), silver-colored (Ag), manganese (Mn), zirconium (Zr), palladium (Pd), platinum (Pt), cobalt (Co), cadmium
(Cd) or a kind or more of group of copper (Cu) and metal ion composition, specifically, may include the chromium as metal
(Cr).In addition, the metal can have metallic form, can in wavelength conversion layer formation process with nitrogen, ethane
Gas, oxygen etc. react and include various form such as metal nitride, metal oxide, metal carbides.Further, described
Wavelength conversion layer can be the pantostrat that the metal was closely laminated on film and was completely covered surface, or be shed on film
The discontinuity layer of the form of metal, but it is not limited to this.
In order to improve the scratch resistance and durability of the substrate surface for including magnesium, it may also include the face coat.At this point, shape
At the clear-coated agent of the face coat, as long as can be used for the clear-coated agent of metal coating, then it is not defined especially.
More specifically, can be suitable for the unglazed clear-coated agent of metal coating or have light/unglazed clear-coated agent etc..
The base material through color development treatment including the face coat carries out the processing of 5 weight % salt fogs at 35 DEG C, by 72
When carrying out adhesivity evaluation after hour, there can be 5% face coat stripping rate below.
In one embodiment, be formed with matt surface coating or have light/matt surface coating through color development treatment
Base material is object, and 5% brine spray is carried out at 35 DEG C, after 72 hours, implements mark signature grid adhesive tape test (cross ﹣
Cut tape test) method.Itself the results show that the face coat being stripped area relative to test piece entirety area be 5% with
Under.From this result it is found that the formation of the present invention has the base material of face coat, the base material through color development treatment is applied with surface
Adhesive force between layer is outstanding (with reference to experimental example 5).
On the other hand, in another embodiment of the invention, it includes that the matrix comprising magnesium is impregnated in hydrogen-oxygen to provide a kind of
The base material color development treatment method of the step of compound solution.
The color development treatment method of the base material of the present invention, can be by will include that be impregnated in hydroxide molten for the matrix of magnesium
Liquid and uniformly forming film, to display color.
At this point, as the hydroxide solution, as long as including the solution of hydroxy (- OH bases), then do not carry out especially
It limits.Specifically, can use dissolved with selected from by NaOH, KOH, Mg (OH)2、Ca(OH)2And Ba (OH)2The 1 of the group of composition
Kind or more solution.
In one embodiment, using the matrix comprising magnesium as object, the colour developing according to hydroxide solution type is had rated
Speed, colour developing power and color uniformity.Use the aqueous solution dissolved with NaOH as hydroxide solution as a result, confirmed to work as
When, compared with the situation for using distilled water, fast 4 times of color speed of color or more.In addition, showing the color in surface staining
Colour developing power it is outstanding, the color of display is uniform.From this result it is found that when using dissolved with the molten of the metal hydroxides such as NaOH
When liquid is as hydroxide solution, film matrix surface it is rapid, be formed uniformly, can be with remarkable colour developing power display color
(with reference to experimental example 1).
In addition, the preparation method of the present invention can control the thickness of the film formed in matrix surface according to immersion condition.
Wherein, described matrix is according to thickness and heat conduction amount is different, thus when the thickness difference of matrix, even soaking under the same conditions
The matrix of stain, on surface, the thickness of the film of formation also can be different.It is therefore preferable that according to the thickness of the matrix comprising magnesium, adjust
Immersion condition controls the thickness of film.
As an example, when the thickness of the matrix comprising magnesium be 0.4T to 0.7T when, the hydroxide solution it is dense
Degree can be 1 weight % to 80 weight %, can be 1 weight % to 70 weight %, 5 weight % to 50 weights more specifically
Measure %, 10 weight % to 20 weight %, 1 weight % to 40 weight %, 30 weight % to 60 weight %, 15 weight % to 45 weights
Measure %, 5 weight % to 20 weight % or 1 weight % to 15 weight %.Moreover, the temperature of the hydroxide solution can be 90
DEG C to 200 DEG C, it can be 100 DEG C to 150 DEG C, then more specifically more specifically, can be 95 DEG C to 110 DEG C.Moreover,
Dip time can be 1 minute to 500 minutes, specifically, can be 10 minutes to 90 minutes.The present invention is in the range
It is interior, it can economically show multiple color in substrate surface, the base caused by being excessively increased of film thickness can be prevented
The intrinsic glossiness of material reduces.
In one embodiment, it is known that with the process of the dip time of matrix, in the flat of the film that substrate surface is formed
Equal thickness increases, therefore confirmed that the color in surface staining is converted.This means that the color shown on surface is with thin
The thickness of film and convert.Thus, it can be known that by adjusting for the concentration of the hydroxide solution of impregnation matrix, temperature and when impregnating
Between, the formation speed and average thickness of film can be controlled, (reference is real so as to adjust the color shown in substrate surface
Test example 2).
In turn, the step being impregnated in hydroxide solution may include：
In N1The 1st impregnation steps impregnated in the hydroxide solution of concentration；And
In NnThe n-th impregnation steps impregnated in the hydroxide solution of concentration；
In the 1st and n-th in impregnation steps, the concentration of hydroxide solution meets following mathematical expressions 3 and 4, n independently of each other
For 2 or more, 6 integers below,
[mathematical expression 3]
8≤N1≤25
[mathematical expression 4]
│Nn-1-Nn│>3
In the mathematical expression 3 and 4,
N1And NnMean that the concentration of the hydroxide solution of each step, unit are weight %.
Just as explained earlier, described the step of being impregnated in hydroxide solution, as in the base material comprising magnesium
Surface form film the step of display color, can be adjusted by the thickness of the film of formation to adjust the color of colour developing.
At this point, the thickness of the film can be controlled according to the concentration of hydroxide solution, therefore, when impregnation matrix will be used for
The concentration of hydroxide solution be subdivided into N1To Nn, specifically, being subdivided into N1To N6、N1To N5、N1To N4、N1To N3Or N1Extremely
N2And when impregnating successively, the subtle aberration for the color for being shown in surface can be adjusted.
On the other hand, step more than any one during base material color development treatment method of the invention can also include the steps of
Suddenly：Before the step of being impregnated in hydroxide solution, pretreated step is carried out to surface；It is being impregnated in hydroxide solution
The step of before, patterned step is carried out to matrix surface using mask；And the step of being impregnated in hydroxide solution it
Afterwards, the step of being rinsed.
At this point, carrying out pretreated step to the surface, it is to be formed before film on matrix, utilizes alkaline cleaning fluid
Surface is handled, to remove the polluter of remained on surface, or the step of being ground.At this point, the alkalinity cleaning
Liquid as long as this field be commonly available to metal, metal oxide or metal hydroxides surface clean as long as do not limited especially
System.In addition, the grinding can be by polishing (buffing), polishing (polishing), sandblasting polishing (blasting) or
The methods of electrolytic polishing and implement, but be not limited to this.
In this step, the polluter or oxide skin in the matrix surface remaining comprising magnesium can not only be removed
(scale) etc., additionally it is possible to by changing the surface energy and/or surface state on surface, specifically, become by the microstructure on surface
Change, control film forms speed.That is, being carried out for the matrix of grinding, even if identical with the matrix for being not carried out grinding
Under the conditions of form film, also can be different in the thickness of film that matrix surface is formed, therefore, understand phase in the color that surface show
It is different.
In addition, described carry out patterned step, it is to utilize mask pair before matrix is impregnated in hydroxide solution
Matrix surface is patterned, and induction is so that the step of forming the film of patterning when hydroxide solution impregnates.
With reference to Fig. 2, patterned " pattered region 103 " has been carried out in hydrogen with mask according to the patterned step
Oxide solution does not form film when impregnating, and not carrying out patterned " non-patterned areas 104 " with mask forms film, they
Between the mean thickness variation of film occurs, thus grain pattern can be embodied due to the aberration in surface staining.
Moreover, when also executing the step of matrix is impregnated in hydroxide solution before the patterned step of progress
When, as shown in figure 3, the relatively thin film of thickness compared with " non-patterned areas 204 " is also formed in " pattered region 203 ",
So as to display color, at this point, the color in " pattered region 203 " display can be with the color of " non-patterned areas 204 "
It is different.
Wherein, it as long as the mask can realize patterned mask in matrix surface, is not then defined especially, but
Specifically, can use to executing heat the demoulding with resistance that the when of being impregnated in the step of hydroxide solution applies
Heat dissipation film etc..
In turn, described the step of being rinsed is to be formed after film on matrix, specifically, being impregnated by matrix
After in the hydroxide solution the step of, the step of passing through the hydroxide solution for rinsing matrix surface to remove remained on surface.
In this step, it by removing in the remaining hydroxide solution of matrix surface, can prevent due to remaining hydroxide solution
Caused film is further formed.
Specific implementation mode
Below according to embodiment and experimental example, the present invention is described in more detail.
But following embodiments and experimental example are the example to the present invention, present disclosure is not limited to following
Embodiment and experimental example.
Embodiment 1.
The test piece comprising magnesium of 1cm × 1cm × 0.4T is impregnated in alkaline cleaning fluid and carries out degreasing, the test piece of degreasing is existed
100 DEG C, impregnate 40 minutes in the NaOH solution of 10 weight %.Then, the test piece described in distilled water flushing, in drying oven into
Row drying, to prepare the test piece through color development treatment.
Embodiment 2.
Instead of magnesium test piece is impregnated 40 minutes in 100 DEG C, the NaOH solution of 10 weight % in the embodiment 1, and
It is dipping 30 minutes, in addition to this, is carried out in method identical with the embodiment 1, to prepares by color development treatment yellowly
Test piece.
Embodiment 3.
Instead of magnesium test piece is impregnated 40 minutes in 100 DEG C, the NaOH solution of 10 weight % in the embodiment 1, and
It is dipping 55 minutes, in addition to this, is carried out in method identical with the embodiment 1, to prepares by color development treatment purple
Test piece.
Embodiment 4.
Instead of magnesium test piece is impregnated 40 minutes in 100 DEG C, the NaOH solution of 10 weight % in the embodiment 1, and
It is dipping 80 minutes, in addition to this, is carried out in method identical with the embodiment 1, to prepares by color development treatment into green
Test piece.
Embodiment 5.
The test piece comprising magnesium of 4cm × 7cm × 0.4T is impregnated in alkaline cleaning fluid and carries out degreasing, in the test piece of degreasing
Paste mask.Then, it is impregnated 20 minutes in 100 DEG C, the NaOH solution of 10 weight %, after distilled water flushing is used in combination, in drying
It is dried in baking oven, to prepare the colour developing test piece being patterned.When observing by the naked eye the test piece, it is able to confirm that
Patterned surface has grain pattern.
Embodiment 6.
The test piece comprising magnesium of 1cm × 1cm × 0.4T is impregnated in alkaline cleaning fluid and carries out degreasing, and by the test piece of degreasing
It is impregnated 50 minutes in 100 DEG C, the NaOH solution of 10 weight %.Then, the test piece described in distilled water flushing and after drying, dry
The unglazed clear dope that liquid is coated in dry test piece, is dried in 120 DEG C -150 DEG C of baking oven, unglazed to prepare
The test piece of bright coating.At this point, the thickness of the unglazed clear dope of coating is 5 μm or less.
Embodiment 7.
In addition to will soak magnesium test piece in 100 DEG C, the NaOH solution of 10 weight % in the embodiment 6 in embodiment 7
Stain was replaced by dipping for 50 minutes except 85 minutes, other are carried out in method identical with the embodiment 6, unglazed to prepare
The colour developing test piece of bright coating.
Embodiment 8.
The unglazed transparent smears used in the embodiment 6 light/unglazed transparent coating has been replaced by embodiment 8
Except agent, other are carried out in method identical with the embodiment 6, to prepare the colour developing test piece for having light/unglazed transparent coating.
Comparative example 1 is to comparative example 3.
In comparative example 1 to comparative example 3 by the embodiment 1 by magnesium test piece in 100 DEG C, the NaOH solution of 10 weight %
Middle dipping is replaced by 100 DEG C for 40 minutes to be impregnated in distilled water except the time shown in the following table 1, other with the embodiment
1 identical method carries out, to prepare by the test piece of color development treatment.
Table 1
| Dip time | |
| Comparative example 1 | 40 minutes |
| Comparative example 2 | 1 hour |
| Comparative example 3 | 2 hours |
Experimental example 1. evaluates base material colour developing efficiency according to hydroxide solution type
According to the type of the solution used as hydroxide solution, in order to evaluate the base material for including magnesium color speed,
The power that develops the color and color uniformity, perform following experiment.
By the colour developing for being visually evaluated the test piece through color development treatment prepared in embodiment 1 and comparative example 1 to comparative example 3
Power.In addition, using the test piece of embodiment 2 to embodiment 4 and comparative example 3 as object, the selected arbitrary 3 point A for being present in each surface is extremely
C measures about the chromaticity coordinates in the CIE colour spaces of siting, it is poor to have found out mean color coordinates.At this point, poor (the Δ of chromaticity coordinates
E* it) is exported using following mathematical expressions 5, and its result is shown in the following table 2.
[mathematical expression 5]
Table 2
First, by being visually evaluated the test piece through color development treatment prepared in embodiment 1 and comparative example 1 to comparative example 3
Develop the color power, the results show that the test piece handled using NaOH aqueous solutions as hydroxide solution and to surface is steamed with use
Distilled water is compared as the test piece of hydroxide solution, and the color speed of test piece is faster.More specifically, it is carried out with NaOH aqueous solutions
The test piece of the embodiment 1 of processing is being dipped through 10 minutes time points, maintains the silver color as test piece inherent colour, but
At the time point for passing through 30 minutes later, show yellow.But in the examination of the comparative example 1 handled with distilled water to comparative example 3
In piece, it is dipped through the test piece for the comparative example 1 that the time is 40 minutes, the color change amount on surface is small, with non-color development treatment
Base material compares, and shows that aberration is little.In addition it confirmed, be dipped through the test piece for the comparative example 2 that the time is 1 hour, slowly show
Color is simultaneously shown as yellow, by the test piece of 2 hours comparative examples 3 of dipping, is shown as yellow, but with the test piece of the embodiment 1
It compares, the colour developing power of the color of display significantly reduces.
In the following, with reference to the table 2, it is known that carry out the test piece of color development treatment with NaOH aqueous solutions, the color of display is uniform.
More specifically, the test piece that the embodiment 2 of color development treatment is carried out with NaOH aqueous solutions, at arbitrary 3 points present on test piece
Chromaticity coordinates difference is shown as Δ L*<0.06、0.23≤Δa*<0.31、0.01≤Δb*<0.21 and 0.237≤Δ E*<0.375.Separately
Outside, it confirms, the chromaticity coordinates difference of the test piece of embodiment 3 and embodiment 4 is also 0.02≤Δ L*<0.24、0.09≤Δa*<
0.44、0.03≤Δb*<0.47 and 0.271≤Δ E*<0.630, deviation is little.But the test piece of comparative example 3, color are sat
Mark difference is shown as 2.25≤Δ L*<2.88、0.79≤Δa*<1.01、3.11≤Δb*<3.23 and 3.919≤Δ E*<4.40
Chromaticity coordinates difference is big.
From this result it is found that for the color development treatment of the base material comprising magnesium, it is impregnated in comprising NaOH, KOH, Mg
(OH)2、Ca(OH)2、Ba(OH)2Deng hydroxide solution, not only efficiency is remarkable, but also the color shown is also uniform.
Experimental example 2. evaluates the colour developing of base material according to the dip time of hydroxide solution
In order to evaluate the colour developing degree according to dip time for the base material for including magnesium, following experiment is performed.
The test piece comprising magnesium of 1cm × 1cm × 0.4T is impregnated in alkaline cleaning fluid and carries out degreasing, and by the test piece of degreasing
It is impregnated 240 minutes in 100 DEG C, the NaOH aqueous solutions of 10 weight %.At this point, the test piece is impregnated in NaOH aqueous solutions
Afterwards, every 5 minutes to 10 minutes, by the color for being visually evaluated display.In addition, in order to confirm generated in strip it is thin
The ingredient and thickness of film, using be dipped through 10 minutes, 170 minutes and 240 minutes time point test piece as object, carried out thin
The X-ray diffraction analysis and transmission electron microscope (TEM) of film are shot.The result is shown in Fig. 4.
It shows, the base material of the invention through color development treatment is shown according to the time impregnated in hydroxide solution
Color it is different.More specifically, if the silver color test piece of non-color development treatment is impregnated in hydroxide solution, pass through 30 points
After clock, it is shown as yellow, orange, red, purple, blue and green successively, this color change with time going by, has
There is certain period, occurs repeatedly.
In addition, after the NaOH aqueous solutions for being impregnated in 10 weight %, to the examination by 10 minutes, 170 minutes and 240 minutes
It is that piece film carries out X-ray diffraction as a result, the film of three test pieces all have 18.5 ± 1.0 ° indicated with 2 θ, 38.0 ± 1.0 °,
50.5 ± 1.0 °, 58.5 ± 1.0 °, 62.0 ± 1.0 ° and 68.5 ± 1.0 ° of diffraction peak confirms to include brucite
(brucite) the magnesium hydroxide (Mg (OH) of crystal form2)。
In turn, with reference to Fig. 4 it is found that the average thickness of the film is increased separately with the process of dip time to about
200nm, 600nm and 900nm.
From the above it is found that the base material through color development treatment of the present invention is by including containing magnesium hydroxide (Mg
(OH)2) film, to develop the color.Furthermore it is possible to according to the dip time of the base material comprising magnesium, control is formed in the thin of surface
Thus the thickness of film can also adjust the color of display.
The Evaluation of Corrosion Resistance 1 of base material of the experimental example 3. through color development treatment
In order to evaluate the corrosion resistance of the base material through color development treatment of the invention, following experiment is performed.
By the test piece and the examination through color development treatment in example 4 of the non-color development treatment comprising magnesium of 1cm × 1cm × 0.4T
Piece is utilized respectively salt mist tester (SST, Salt Spray Tester), the brine of 5 weight % is equably sprayed at 35 DEG C,
By the strip being visually evaluated after 942 hours, its result is shown in Fig. 5.
With reference to Fig. 5 it is found that the base material through color development treatment of the present invention, corrosion resistance significantly improve.More specifically, it does not show
The test piece of color processing is shown as corroding due to brine, and strip observes by the naked eye also not enough uniformly, and deforms.
In contrast, it is thus identified that small degree only occurs for the test piece through color development treatment that the embodiment 4 of film is formed on surface
Decoloration, the surface of test piece do not deform, but uniformly.
It is resistance to improve from this result it is found that the base material through color development treatment of the present invention on surface by forming film
Corrosion.
The Evaluation of Corrosion Resistance 2 of base material of the experimental example 4. through color development treatment
In order to evaluate the corrosion resistance of the base material through color development treatment of the invention, following experiment is performed.
By the test piece of the non-color development treatment comprising magnesium of 1cm × 1cm × 0.4T and with the test piece phase of non-color development treatment
With test piece, impregnated respectively 75 minutes, 150 minutes and 230 minutes in 100 DEG C, the NaOH aqueous solutions of 10 weight %, and prepare
The test piece that is obtained.Then, in the state that the test piece of preparation to be impregnated in the brine of 0.5 weight %, after 72 hours,
Using the test piece of non-color development treatment and the test piece through color development treatment has carried out potentiodynamic polarization experiment as object.By the electrokinetic potential of measurement
Polarization curve is shown in Fig. 6, and by carrying out Ta Feier analyses (Tafel analysis) to dynamic potential polarization curve, is found out
Corrosion electric current density (the I obtained from the regions Ta Feier (± 200mV) of the polarization curve of each test piececorr), corrosion potential
(Ecorr) and Pitting Potential (Epit).In addition, from using the derived value of following mathematical expressions 6, corrosion rate has been calculated
(Corr.Rate).Its result is shown in the following table 3.
[mathematical expression 6]
In the mathematical expression 6, E.W is magnesium atom amount/exchange electron amount=24.305/2,
Density is 1.738g/cm3。
Table 3
By 3 it is found that the corrosion resistance of the base material through color development treatment of the present invention is outstanding.
More specifically, to impregnated respectively in hydroxide solution test piece in 75 minutes, 150 minutes and 230 minutes with
The test piece of non-color development treatment carries out potentiodynamic polarization experiment, as a result confirm the test piece through color development treatment show about 0.0004 to
The corrosion rate (Corr.rate) of 0.0013mm/, the color development treatment time is longer, and corrosion rate continuously decreases.On the other hand,
For the test piece of non-color development treatment, it is about 0.4322mm/ to confirm corrosion rate, compared with the test piece through color development treatment,
About high 330 times or more of corrosion rate.
From this result it is found that the film formed on the surface of the base material through color development treatment is not only in surface display color,
But also play the role of preventing the corrosion of the matrix comprising magnesium simultaneously.
Experimental example 5. forms the evaluation of physical properties of the base material through color development treatment of face coat
In order to evaluate the corrosion resistance and adhesive force of the base material through color development treatment for being formed with face coat, following reality is performed
It tests.
To be formed with the test piece through color development treatment of face coat in embodiment 6 and embodiment 8 as object, with the reality
It tests 3 identical condition of example to be tested, and passes through 72 hours in the time of brine spray, evaluate the corrosion resistance of surface and warp of test piece
The adhesive force of the base material of color development treatment and the face coat for being formed in surface.At this point, the adhesive force passes through mark signature grid glue
Tape test is evaluated.More specifically, the intersection with the intervals 1mm is marked on the face coat having been coated with using blade
After laterally 6 lines and longitudinal 6 lines of fork, in the crosspoint of horizontal line and ordinate Continuous pressing device for stereo-pattern securely, and it is fast by measuring
The method of the area of face coat when speed removes the adhesive tape, being stripped relative to the test piece gross area, to evaluate adhesive force.
Its result it is found that the present invention formation have face coat the base material through color development treatment excellent corrosion resistance, and
And the adhesive force between the base material and face coat through color development treatment is very excellent.More specifically, it is formed with matt surface painting
Layer or have light/matt surface coating embodiment 6 and embodiment 8 test piece spray brine time by after 72 hours,
The surface deformation caused by corroding is not generated.In addition, carrying out adhesive force evaluation result to the test piece for having carried out corrosion resistance experiment
It can confirm, the area for the face coat being stripped by adhesive tape is the 5% or less of the face coat gross area.
From this result it is found that the formation of the present invention has the base material through color development treatment of face coat not only with excellent
Corrosion resistance, and there is remarkable adhesive force between base material and face coat through color development treatment.
Therefore, the base material of the invention through color development treatment is by will include that the matrix of magnesium is impregnated in comprising NaOH, KOH, Mg
(OH)2、Ca(OH)2、Ba(OH)2Deng hydroxide solution in, surface formed film, so as to improve the homogeneous on surface
Property and corrosion resistance, having the advantages that being capable of equably display color in a short time.Therefore, the base material through color development treatment exists
Use the construction exterior material of magnesium material, automobile decoration, the especially electric appliances such as cover for mobile phone body component, electronic part material
In field, it can be efficiently used.
Industrial applicibility
The base material through color development treatment of the present invention is formed containing being indicated with chemical formula 1 on the surface of the matrix comprising magnesium
The film of compound can equably show face in a short time so as to improve the homogenieity and corrosion resistance of substrate surface
Color.Therefore, the base material through color development treatment is in the construction exterior material using magnesium material, automobile decoration, especially mobile electricity
It talks about in electric appliances, the electronic part material fields such as housing parts, can be efficiently used.
Claims (14)
1. a kind of base material of color development treatment, which is characterized in that it includes with the intrinsic texture of metal：
Include the matrix of magnesium；And
Film is formed in described matrix, and contains the compound indicated with following chemical formula 1；
Wherein, between each point for arbitrary 3 points that the arbitrary region for being present in the horizontal 1cm on the film and vertical 1cm includes
Mean color coordinates poor (Δ L*, Δ a*, Δ b*) meet one or more of Δ L* ＜ 0.6, Δ a* ＜ 0.6 and Δ b* ＜ 0.5
Condition,
The average thickness of the film is 50nm to 2 μm,
[chemical formula 1]
M(OH)m
In the chemical formula 1, M includes being selected from by a kind or more of Na, K, Mg, Ca and Ba group formed, and m is 1 or 2.
2. the base material of color development treatment according to claim 1, which is characterized in that film has real on the matrix comprising magnesium
The patterning of grain pattern needed for existing.
3. the base material of color development treatment according to claim 2, which is characterized in that grain pattern is by meeting following mathematical expressions 1
The mean thickness variation of the film of condition and embody,
[mathematical expression 1]
5nm≤|T1-T2| 2.0 μm of ＜
In the mathematical expression 1, T1Indicate the Film Average Thickness of pattered region, T2Indicate that the film of non-patterned areas is flat
Equal thickness.
4. the base material of color development treatment according to claim 1, which is characterized in that
When carrying out Evaluation of Corrosion Resistance, meet the condition of following mathematical expressions 2,
[mathematical expression 2]
Corrosion rate≤0.01
In the mathematical expression 2,
Corrosion rate expression passes through the corruption of the base material through color development treatment of potentiodynamic polarization measuring in 0.5 weight % brine
Degree of corrosion,
Unit is mm/.
5. the base material of color development treatment according to claim 1, which is characterized in that film includes magnesium hydroxide (Mg
(OH)2)。
6. the base material of color development treatment according to claim 1, which is characterized in that matrix further includes stainless steel or titanium (Ti).
7. the base material of color development treatment according to claim 1, which is characterized in that further include that the surface being formed on film applies
Layer.
8. a kind of base material color development treatment method, which is characterized in that include the following steps：Matrix comprising magnesium is impregnated in hydroxide
In object solution, to form the film containing the compound indicated with following chemical formula 1,
Wherein, the hydroxide solution is by being selected from NaOH, KOH, Mg (OH)2、Ca(OH)2And Ba (OH)2One or more of group
At,
The temperature of the hydroxide solution is 90 DEG C to 200 DEG C,
The average thickness of the film is 50nm to 2 μm,
Being averaged between each point for arbitrary 3 points that the arbitrary region for being present in the horizontal 1cm on the film and vertical 1cm includes
Chromaticity coordinates poor (Δ L*, Δ a*, Δ b*) meets the condition of one or more of Δ L* ＜ 0.6, Δ a* ＜ 0.6 and Δ b* ＜ 0.5,
The texture that the base material of color development treatment has metal intrinsic,
[chemical formula 1]
M(OH)m
In the chemical formula 1, M includes being selected from by a kind or more of Na, K, Mg, Ca and Ba group formed, and m is 1 or 2.
9. base material color development treatment method according to claim 8, which is characterized in that a concentration of 1 weight of hydroxide solution
Measure % to 80 weight %.
10. base material color development treatment method according to claim 8, which is characterized in that be impregnated in the step of hydroxide solution
It is rapid to carry out 1 minute to 500 minutes.
11. base material color development treatment method according to claim 8, which is characterized in that arbitrary in further comprising the steps of
More than one the step of：
Before the step of being impregnated in hydroxide solution, pretreated step is carried out to surface；
Before the step of being impregnated in hydroxide solution, patterned step is carried out to matrix surface using mask；And
After the step of being impregnated in hydroxide solution, the step of being rinsed.
12. base material color development treatment method according to claim 11, which is characterized in that further include：It is carried out using mask
Before patterned step, the step of matrix comprising magnesium is impregnated in hydroxide solution.
13. base material color development treatment method according to claim 11, which is characterized in that mask is the heat dissipation film that can be demoulded.
14. base material color development treatment method according to claim 8, which is characterized in that
The step of being impregnated in hydroxide solution include：
In N1The 1st impregnation steps impregnated in the hydroxide solution of concentration；And
In NnThe n-th impregnation steps impregnated in the hydroxide solution of concentration,
Wherein, in the 1st impregnation steps and the n-th impregnation steps, the concentration of hydroxide solution meets following numbers independently of each other
Formula 3 and 4, n are 2 or more, 6 integers below：
[mathematical expression 3]
8≤N1≤25
[mathematical expression 4]
|Nn-1-Nn|>3
In the mathematical expression 3 and 4, N1 and Nn indicate that the concentration of the hydroxide solution of each step, unit are weight %.
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| KR10-2013-0164045 | 2013-12-26 | ||
| KR1020130164046A KR101543926B1 (en) | 2013-12-26 | 2013-12-26 | Color-treated magnesium and color-treatment method thereof |
| KR10-2013-0164047 | 2013-12-26 | ||
| KR10-2013-0164044 | 2013-12-26 | ||
| KR10-2013-0164046 | 2013-12-26 | ||
| KR1020130164047A KR101584413B1 (en) | 2013-12-26 | 2013-12-26 | Surface treated metallic material and surface treatment method for metallic material |
| KR1020130164044A KR101543924B1 (en) | 2013-12-26 | 2013-12-26 | Color-treated magnesium and color-treatment method thereof |
| KR1020130164045A KR101543925B1 (en) | 2013-12-26 | 2013-12-26 | Patterned color-magnesium and patterning method thereof |
| PCT/KR2014/012920 WO2015099498A1 (en) | 2013-12-26 | 2014-12-26 | Color-treated base material and base material color treatment method therefor |
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| US11751349B2 (en) | 2019-05-28 | 2023-09-05 | Apple Inc. | Anodized part having a matte black appearance |
| CN112020248B (en) * | 2019-05-28 | 2021-12-10 | 苹果公司 | Anodized parts having a matte black appearance |
| US11614778B2 (en) | 2019-09-26 | 2023-03-28 | Apple Inc. | Anodized part having low reflectance of visible and near-infrared light |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105849315A (en) | 2016-08-10 |
| EP3088565B9 (en) | 2019-10-23 |
| EP3088566B1 (en) | 2018-08-15 |
| CN105849314B (en) | 2018-06-26 |
| EP3088564A1 (en) | 2016-11-02 |
| EP3088562A4 (en) | 2017-03-08 |
| EP3088565A1 (en) | 2016-11-02 |
| EP3088566A1 (en) | 2016-11-02 |
| CN105849314A (en) | 2016-08-10 |
| EP3088565B1 (en) | 2019-06-12 |
| EP3088562B1 (en) | 2019-05-08 |
| EP3088566A4 (en) | 2017-03-08 |
| EP3088562A1 (en) | 2016-11-02 |
| EP3088563B1 (en) | 2019-05-15 |
| EP3088564A4 (en) | 2017-03-08 |
| CN105849313B (en) | 2018-03-09 |
| EP3088563A4 (en) | 2017-03-08 |
| EP3088563A1 (en) | 2016-11-02 |
| EP3088564B1 (en) | 2019-05-22 |
| CN105849313A (en) | 2016-08-10 |
| EP3088565A4 (en) | 2017-03-08 |
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