CN105849315A - Color-treated base material and base material color treatment method therefor - Google Patents
Color-treated base material and base material color treatment method therefor Download PDFInfo
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- CN105849315A CN105849315A CN201480071367.0A CN201480071367A CN105849315A CN 105849315 A CN105849315 A CN 105849315A CN 201480071367 A CN201480071367 A CN 201480071367A CN 105849315 A CN105849315 A CN 105849315A
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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
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- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
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Abstract
The present invention relates to a color-treated base material and a base material color treatment method therefor. The base material is capable of improving the homogeneity and corrosion resistance of the surface of the base material and realizing a uniform color in a short period of time. Accordingly, the color-treated base material can be usefully used in the fields of building exterior materials, automobile interiors, and particularly electrical and electronic component materials, such as mobile phone case components, in which a magnesium material is used.
Description
Technical field
The present invention relates to a kind of base material through color development treatment comprising magnesium and the base material for it shows
Color processing method.
Background technology
Magnesium as practical metal belongs to the metal of ultralight metal, its excellent in abrasion resistance, antisum
Property strong, and environmental protection, but exist and be difficult to embody metal-like and the problem of multiple color.Additionally,
As the metal that electrochemistry is the most active, great activity, therefore do not carry out in color development treatment
Time, very rapidly corrode in air or solution, therefore exist a lot in terms of commercial Application
Difficulty.
In recent years, due to industry comprehensive lightweight trend, magnesium industry is attracted attention, along with
In electrical equipment, the electronic part material fields such as cover for mobile phone body component, the outer package of metal-like
Material becomes trend, thus actively develops the research of the problems referred to above improving magnesium.
As a result, KR published patent the 2011-0016750th discloses a kind of by magnesium alloy
The substrate surface dry type coating formed realizes gold containing carrying out collosol and gel coating after metallics
Belong to texture and guarantee corrosion proof PVD-sol-gal process, KR published patent the
No. 2011-0134769 discloses a kind of utilize chemical grinding to containing magnesium substrate surface compose
Give gloss, be dissolved with the above-mentioned base material of alkaline electrolyte Anodic Oxidation of pigment, so that table
The anodizing of surface colour development.
But, for described PVD-sol-gal process, although realize metal at substrate surface
, there is the problem being difficult to show shades of colour in texture, but the metal-like that not magnesium is intrinsic.This
Outward, when utilizing anodizing to carry out color development treatment, not only can be formed opaque at substrate surface
Oxide-film, and be difficult to the metal-like that metal is intrinsic.
Therefore, practical for the base material containing magnesium, can be by above-mentioned base in the urgent need to one
The surface of material carries out chemistry, electrochemistry or physical treatment, thus the while of improving corrosion proof,
Its surface can show the technology of required color.
Summary of the invention
(1) to solve the technical problem that
Unresolved described problem, it is an object of the invention to provide a kind of comprise magnesium at colour developing
The base material of reason.
Another object of the present invention is to provide a kind of color development treatment method of described base material.
(2) technical scheme
To achieve these goals, the present invention provides a kind of color development treatment in one embodiment
Base material, including: comprise the matrix of magnesium；And thin film, be formed on described matrix, and containing with
Compound represented by following chemical formula 1；Wherein, it is present in the arbitrary region on described thin film
Mean color coordinates between each point of any 3 points that (horizontal 1cm and vertical 1cm) includes is poor
(Δ L*, Δ a*, Δ b*) meets more than one in Δ L* ＜ 0.6, Δ a* ＜ 0.6 and Δ b* ＜ 0.5
Condition:
[chemical formula 1]
M(OH)m
In described chemical formula 1, M includes selecting free Na, K, Mg, Ca and Ba to form
More than a kind of group, m is 1 or 2.
It addition, the present invention provides a kind of color development treatment method of base material in another embodiment, should
Method includes the step that the matrix comprising magnesium impregnated in hydroxide solution.
(3) beneficial effect
The base material through color development treatment of the present invention, on the surface of the matrix comprising magnesium, is formed containing changing
The thin film of the compound shown in formula 1 such that it is able to make homogeneity and the corrosion resistance of substrate surface
Improve, it is possible to Show Color the most equably.Therefore, the described base through color development treatment
Material can use magnesium material construction exterior material, automobile decoration, particularly mobile phone
In the electrical equipment such as housing parts, electronic part material field, it is possible to be efficiently used.
Accompanying drawing explanation
Fig. 1 is the image illustrating the CIE colour space.
Fig. 2 is cuing open of the matrix structure through color development treatment of the thin film illustrating and including patterning
View.
Fig. 3 is the sectional view illustrating matrix structure, and described matrix structure is included in the base comprising magnesium
Before surface patterns, carry out impregnated in the step of hydroxide solution further, from
And include patterning.
Fig. 4 is in one embodiment, utilizes determination of transmission electron microscopy difference dip time
The image of the thickness of lower thin film: wherein, A be dip time be the base material of 10 minutes, B is
Dip time is the base material of 170 minutes, C be dip time be the base material of 240 minutes.
Fig. 5 is in one embodiment, when Evaluation of Corrosion Resistance, according to color development treatment whether and
The image of shooting substrate surface: now, A is the base material of non-color development treatment, and B is at colour developing
The base material of reason.
Fig. 6 be illustrate in one embodiment based on color development treatment whether and dip time
The curve chart of base material dynamic potential polarization curve (potentiodynamic polarization curve).
Preferred forms
The present invention can carry out various deformation, and can have multiple different embodiment, attached
Figure illustrates specific embodiment, and is described in detail.
But, the present invention is not limited to these specific embodiments, it is thus understood that be included in this
All changes, equivalent and substitute in the thought of invention and technical scope is included in this
Invention.
In the present invention, " include " or the term such as " having " is it should be appreciated that only want to refer to
Go out the feature described in description, numeral, step, action, element, parts or they
The existence of combination, get rid of other features one or more, numeral, step in advance
The existence of suddenly, action, element, parts or combinations thereof or additional probability.
Also, it is understood that the accompanying drawing of the present invention is to zoom in or out for convenience of description to illustrate
's.
Below, referring to the drawings the present invention is described in detail, with the symbol of accompanying drawing independently,
Identical or corresponding element uses identical reference, and eliminates and repeat it
Bright.
In the present invention, " chromaticity coordinates " refers to International Commission on Illumination (Commossion
International de 1 ' Eclairage, CIE) coordinate of the color value CIE colour space that specifies,
Optional position in the CIE colour space can represent with L*, a*, b*3 kind coordinate figure.
Wherein, L* value represents lightness, and L*=0 represents black (black), and L*=100 represents white
Color (white).Additionally, a* value represents that the color with this chromaticity coordinates is partial to pure red (pure
Magenta) which color or in pure green (pure green), b* represents have this color
The color of coordinate is partial in gilvous (pure yellow) and pure blue (pure blue)
Which color.
Specifically, described a* value has the scope of-a to+a, maximum (a*max) table of a*
Showing pure red (pure magenta), the minima (a*min) of a* represents pure green (pure
green).Such as, a* value is for being the color being partial to pure green during negative, when a* value is positive number
For being partial to pure red color.Relatively during a*=80 and a*=50, represent that a*=80 compares
A*=50 is positioned closer to pure red seat.Additionally, described b* has the scope of-b to+b.
The maximum (b*max) of b* represents gilvous (pure yellow), the minima (b*min) of b*
Represent pure blue (pure blue).Such as, a* value is for being the face being partial to gilvous during negative
Color, is the color being partial to pure blue during positive number.Relatively during b*=80 and b*=50, represent
B*=80 compares b*=50 and is positioned closer to pure red position.
And, in the present invention, " aberration " or " chromaticity coordinates is poor " refers in cie color space
Distance between two colors.That is, distance distal color difference is big, the nearlyest color of distance almost without
Difference, this can be represented by the Δ E* of following mathematical expression 3.
[mathematical expression 5]
And then, in the present invention, so-called " required grain pattern ", it is meant that according to the purposes of base material,
The pattern in a planned way and/or intentionally imported on surface, now, described apperance can be whole
Including not there is the form of systematicness and there is the form of systematicness.
And, in the present invention, " wavelength conversion layer " refer to by regulation the reflection of light, refraction,
Scattering, diffraction etc. control the layer of the wavelength of incident illumination, make to reflect in the film and/or scatter
The light further refraction and scattering in face coat minimize, induce luminous reflectance, it is thus possible to
Enough effects playing the color that holding is developed the color by thin film.
Finally, in the present invention, unit " T " represents the thickness of the base material comprising magnesium, Ke Yiyu
Unit " mm " is identical.
The present invention provides a kind of base material through color development treatment comprising magnesium and the base material for it to show
Color processing method.
In the past, it is known that the method for Show Color on the material comprise magnesium have utilization containing metal object
PVD-sol-gal process that matter or pigment etc. are coated at material surface, anodizing etc..
But, described method is likely to decrease the durability of base material.Additionally, there are and be difficult at material list
Face Show Color equably, the thin layer of coating are easily stripped and cannot meet asking of reliability
Topic.Particularly, the metal-like that described method is intrinsic owing to cannot embody metal, thus exist
It is difficult to electrical equipment, the electricity such as housing in construction exterior material, automobile decoration, particularly mobile product
The problem that subassembly Material Field utilizes.
In order to overcome this problem, the present invention propose the present invention comprise magnesium through color development treatment
Base material and for its base material color development treatment method.
The base material through color development treatment of the present invention, by comprising the matrix surface adequate relief of magnesium
Become thin film, it is possible to Show Color the most equably, according to the thickness of the thin film formed,
Multiple color can be shown.And, there is homogeneity and the corrosion resistance that can make substrate surface
The advantage improved.
The present invention is described in detail below.
The present invention provides the base material of a kind of color development treatment in one embodiment, including: comprise magnesium
Matrix；And thin film, it is formed on the matrix, containing shown in formula 1 below
Compound；
Be present in that the arbitrary region on described thin film (horizontal 1cm and vertical 1cm) includes any 3
Individual, the mean color coordinates poor (Δ L*, Δ a*, Δ b*) between each point meets Δ L* ＜ 0.6, Δ a*
More than one condition in ＜ 0.6 and Δ b* ＜ 0.5,
[chemical formula 1]
M(OH)m
In described chemical formula 1,
M includes more than a kind of the group selecting free Na, K, Mg, Ca and Ba to constitute, m
It is 1 or 2.
Specifically, the described base material through color development treatment can meet in described condition 2 kinds with
On, more specifically, can all meet described condition.
In one embodiment, measure be present in the present invention color development treatment base material on any
3 chromaticity coordinates in the CIE colour space.Its result, chromaticity coordinates difference be Δ L* < 0.06,
0.23≤Δ a* < 0.31 and 0.01≤Δ b* < 0.21, all meets described condition.It addition, from described
The Δ E* that measured value derives is 0.237≤Δ E* < 0.375, it is thus identified that the deviation of chromaticity coordinates is notable very
Little.This means the color even (with reference to experimental example 1) of the magnesium through color development treatment of the present invention.
In the described color embodied in the base material of color development treatment, make use of the light inciding surface
Scattering and refraction principle, adjusted by the average thickness of thin film being formed uniformly at substrate surface
Joint, controls incident scattering of light and refractive index, such that it is able to show institute equably at substrate surface
The color needed.
Now, described matrix can be through the base material of color development treatment and the base carried out before color development treatment
Material is identical, as described matrix, as long as comprise magnesium and can be at electrical equipment, electronic product material
Field is used as framework, then its kind or form are not specially limited.As an example, can
So that in order to magnesium substrates, the rustless steel having the form of magnesium at Dispersion on surface or the titanium (Ti) of magnesium composition
Base material etc..
It addition, described thin film is without particular limitation of average thickness, but specifically, can be 50nm
To 2 μm, more specifically, can be 100nm to 1 μm.
And then, described thin film can have the pattern of the required grain pattern of display on the matrix comprise magnesium
Structure, described grain pattern can be embodied by the mean thickness variation of thin film.
With reference to Fig. 2 and Fig. 3, for described thin film 102,202, when for pattered region
103,203 time, including the pattered region 103,203 of thin film and non-patterned areas 104,
204, described pattered region 103,203 is at matrix 101,201) on be formed without thin film or
Formed with lower thickness, can have the average thick of regulation with non-patterned areas 104,204
Degree deviation.Now, described grain pattern can be by inclined by the average thickness of thin film (102 and 202)
Incident scattering of light and refractive index difference that difference causes embody.
As an example, the mean thickness variation of described thin film can meet following mathematical expression 1
Condition,
[mathematical expression 1]
5nm≤│T1-T2│ ＜ 2.0 μm
In described mathematical expression 1,
T1Represent the Film Average Thickness of pattered region,
T2Represent the Film Average Thickness of non-patterned areas.
Specifically, the mean thickness variation of described thin film can be more than 5nm, less than 2.0
μm, more specifically, can be that 5nm to 100nm, 50nm are to 0.5 μm or 0.5 μm
Above, less than 2.0 μm.The present invention can be in the range of described mean thickness variation, induced map
Case region and the bigger aberration of non-patterned areas, more effectively show grain pattern.
It addition, the base material through color development treatment of the present invention includes thin film on matrix, such that it is able to
Improve corrosion resistance.Specifically, described through the base material of color development treatment at Evaluation of Corrosion Resistance time, can
To meet following mathematical expression 2,
[mathematical expression 2]
Corrosion rate (Corr.Rate)≤0.01
In described mathematical expression 2,
Corrosion rate (Corr.Rate) represents in room temperature, 0.5 weight % saline, passes through electrokinetic potential
The extent of corrosion of the base material through color development treatment that polarization experiment measures, unit is mm/.Wherein,
Room temperature can be 25 ± 2 DEG C.
In one embodiment, with the base material of the described base material through color development treatment Yu non-color development treatment
For object, perform the potentiodynamic polarization test in room temperature, 0.5 weight % saline, have rated
The corrosion resistance of base material.Its result, it is thus identified that with regard to for the base material of color development treatment, corrosion rate
(Corr.Rate) it is 0.0004 to 0.0013mm/ year, on the other hand, the base material of non-color development treatment
Corrosion rate be 0.4322mm/.Knowable to this result, the present invention through color development treatment
Base material form thin film on surface, thus compared with the base material of non-color development treatment, have more excellent
Corrosion resistance (with reference to experimental example 3 and 4).
Now, as long as described thin film can make to incide light scattering and the refraction on surface, the most not
It is defined especially.Specifically, described thin film can be sodium hydroxide (NaOH), hydrogen-oxygen
Change potassium (KOH), magnesium hydroxide (Mg (OH)2), calcium hydroxide (Ca (OH)2) and barium hydroxide
(Ba(OH)2In) more than a certain kind, more specifically, can be magnesium hydroxide (Mg (OH)2)。
In one embodiment, the described thin film included through the base material of color development treatment is performed
X-ray diffraction analysis.Its result, it is thus identified that described thin film have be designated 18.5 ± 1.0 ° of 2 θ,
38.0 ± 1.0 °, 50.5 ± 1.0 °, 58.5 ± 1.0 °, 62.0 ± 1.0 ° and the diffraction peak of 68.5 ± 1.0 °.
It means that substrate surface formed thin film by having brucite (brucite) crystalline
Magnesium hydroxide (Mg (OH)2) constitute.Knowable to this result, the present invention through color development treatment
Base material includes magnesium hydroxide (Mg (OH)2) (with reference to experimental example 2).
It addition, the base material through color development treatment of the present invention is additionally may included on thin film the ripple formed
Long transform layer and face coat.
Now, as described wavelength conversion layer, as long as can make from thin film refraction and/or dissipate
The light penetrated occurs refraction and scattering realization to minimize, by induction light at face coat further
Reflect and keep the color developed the color by thin film, then its kind or form can not limit especially
Determine and use.Specifically, described wavelength conversion layer can include selecting free aluminum (Al), chromium (Cr),
Titanium (Ti), gold (Au), molybdenum (Mo), silver (Ag), manganese (Mn), zirconium (Zr), palladium (Pd), platinum (Pt),
More than a kind of the group of cobalt (Co), cadmium (Cd) or copper (Cu) and described metal ion composition, specifically
For, the chromium (Cr) as metal can be included.It addition, described metal can have clipped wire
Sub-form, can be anti-with nitrogen, ethane gas, oxygen etc. in wavelength conversion layer formation process
Answer and include various forms such as metal nitride, metal-oxide, metal carbides.Enter one
Step, described wavelength conversion layer can be that described metal is closely laminated on thin film and table is completely covered
The pantostrat in face, or on thin film, shed the discontinuity layer of the form of metal, but be not limited to
This.
In order to improve scratch resistance and the durability of the substrate surface comprising magnesium, may also include described table
Finishing coat.Now, the clear-coated agent of described face coat is formed, as long as can be used for metal
The clear-coated agent of coating, is defined the most especially.More specifically, can be to fit
For metal coating unglazed clear-coated agent or have light/unglazed clear-coated agent etc..
The base material through color development treatment including described face coat carries out 5 weight % at 35 DEG C
Salt fog processes, and carries out adhesivity evaluation, can have the table of less than 5% after 72 hours
Finishing coat stripping rate.
In one embodiment, to be formed with matt surface coating or to have light/matt surface coating
The base material through color development treatment be object, at 35 DEG C, carry out 5% brine spray, through 72
After hour, implement mark signature grid adhesive tape test (cross cut tape test) method.Its knot
Fruit display, the area of the face coat being stripped is less than 5% relative to test piece entirety area.
Knowable to this result, the described base material being formed with face coat of the present invention, it is at colour developing
Adhesive force between base material and the face coat of reason is outstanding (with reference to experimental example 5).
On the other hand, in another embodiment of the invention, it is provided that a kind of including will comprise magnesium
Matrix impregnated in the base material color development treatment method of the step of hydroxide solution.
The color development treatment method of the described base material of the present invention, can be by soaking the matrix comprising magnesium
Stain is uniformly forming thin film in hydroxide solution, thus Show Color.
Now, as described hydroxide solution, as long as comprise the molten of hydroxy (-OH base)
Liquid, is defined the most especially.Specifically, it is possible to use be dissolved with choosing free NaOH,
KOH、Mg(OH)2、Ca(OH)2And Ba (OH)2The solution of more than a kind of the group of composition.
In one embodiment, with comprise magnesium matrix as object, have rated according to hydroxide
The color speed of solution type, colour developing power and color uniformity.Its result, it is thus identified that work as use
When being dissolved with the aqueous solution of NaOH as hydroxide solution, with the situation phase using distilled water
Ratio, fast more than 4 times of the color speed of color.It addition, demonstrate the color at surface staining
Colour developing power is outstanding, the color even of display.Knowable to this result, when use is dissolved with NaOH
During Deng the solution of metal hydroxides as hydroxide solution, thin film at matrix surface rapidly,
It is formed uniformly, it is possible to remarkable colour developing power Show Color (with reference to experimental example 1).
It addition, the preparation method of the present invention can control in matrix surface shape according to immersion condition
The thickness of the thin film become.Wherein, described matrix according to thickness heat conduction amount different, thus work as base
During the thickness difference of body, even the matrix impregnated under the same conditions, formed on surface is thin
The thickness of film also can be different.It is therefore preferable that according to the thickness of the matrix comprising magnesium, regulation dipping
Condition, controls the thickness of thin film.
As an example, when comprising the thickness of matrix of magnesium and being 0.4T to 0.7T, described
The concentration of hydroxide solution can be 1 weight % to 80 weight %, more specifically, can
Think that 1 weight % to 70 weight %, 5 weight % are to 50 weight %, 10 weight % to 20 weights
Amount %, 1 weight % to 40 weight %, 30 weight % to 60 weight %, 15 weight % to 45
Weight %, 5 weight % are to 20 weight % or 1 weight % to 15 weight %.And, described hydrogen
The temperature of oxide solution can be 90 DEG C to 200 DEG C, more specifically, can be 100 DEG C
To 150 DEG C, more more specifically, it can be 95 DEG C to 110 DEG C.And, dip time can
Think 1 minute to 500 minutes, specifically, can be 10 minutes to 90 minutes.This
Bright in the range of described, can economically show multiple color at substrate surface, be possible to prevent
The intrinsic glossiness of the base material that causes because of excessively increasing of film thickness reduces.
In one embodiment, it is known that along with the process of the dip time of matrix, at substrate surface
The average thickness of the thin film formed increases, and therefore confirms to carry out turning in the color of surface staining
Change.This means that the color shown on surface is changed along with the thickness of thin film.Thus, it can be known that
The concentration of hydroxide solution, temperature and the dip time of impregnation matrix it is used for by regulation,
Formation speed and the average thickness of thin film can be controlled such that it is able to regulation shows at substrate surface
Color (with reference to experimental example 2).
And then, described in the step that impregnated in hydroxide solution may include that
At N11st impregnation steps of dipping in the hydroxide solution of concentration；And
At NnN-th impregnation steps of dipping in the hydroxide solution of concentration；
The the 1st and n-th in impregnation steps, the concentration of hydroxide solution meets independently of each other
Following mathematical expression 3 and 4, n is the integer of more than 2, less than 6,
[mathematical expression 3]
8≤N1≤25
[mathematical expression 4]
│Nn-1-Nn│>3
In described mathematical expression 3 and 4,
N1And NnMeaning the concentration of the hydroxide solution of each step, unit is weight %.
The most as previously described, the described step of dipping in hydroxide solution, as
Thin film and the step of Show Color is formed on the surface of the base material comprising magnesium, can be by being formed
The thickness adjusted of thin film regulates the color of colour developing.Now, the thickness of described thin film can basis
The concentration of hydroxide solution is controlled, therefore, when being used for the hydroxide of impregnation matrix
The concentration of thing solution is subdivided into N1To Nn, specifically, it is subdivided into N1To N6、N1Extremely
N5、N1To N4、N1To N3Or N1To N2And when impregnating successively, can regulate and be shown in table
The trickle aberration of the color in face.
On the other hand, appointing during the base material color development treatment method of the present invention can also include the steps of
Anticipate more than one step: before impregnated in the step of hydroxide solution, surface is carried out
The step of pretreatment；Before impregnated in the step of hydroxide solution, utilize mask to matrix
Surface carries out the step patterned；And after the step that impregnated in hydroxide solution, carry out
The step rinsed.
Now, described surface is carried out the step of pretreatment, is on matrix before formation thin film,
Utilize alkaline cleaning fluid that surface is processed, thus remove the polluter of remained on surface, or
The step being ground.Now, as long as described alkaline cleaning fluid this area is commonly available to gold
Just being not particularly limited of genus, metal-oxide or metal hydroxides surface clean.It addition,
Described grinding can be by polishing (buffing), polishing (polishing), sandblasting polishing (blasting)
Or the method such as electrolytic polishing and implement, but be not limited to this.
In this step, it is possible not only to remove the polluter in the matrix surface remaining comprising magnesium
Or oxide skin (scale) etc., additionally it is possible to by changing surface energy and/or the apparent condition on surface,
Specifically, by the microstructure change on surface, control thin film and form speed.That is, it is carried out
For the matrix ground, even if being formed thin under conditions of identical with being not carried out the matrix that grinds
Film, the thickness at the thin film of matrix surface formation also can be different, therefore, the face shown on surface
Color can be different.
Carry out the step patterned described in it addition, be that matrix impregnated in hydroxide solution
Before, utilizing mask to pattern matrix surface, induction makes to soak at hydroxide solution
The step of the thin film of patterning is formed during stain.
With reference to Fig. 2, carry out " the pattern of patterning according to the step of described patterning with mask
Change region 103 " it is formed without thin film when hydroxide solution impregnates, do not carry out pattern with mask
" non-patterned areas 104 " changed forms thin film, and the average thickness that thin film occurs between them is inclined
Difference, thus grain pattern can be embodied due to the aberration at surface staining.
And, when also performing that before the described step carrying out and patterning matrix be impregnated in hydrogen-oxygen
During the step of compound solution, as it is shown on figure 3, also formed and " non-figure in " pattered region 203 "
Case region 204 " compare the thin film of thickness relative thin such that it is able to Show Color, now,
The color shown in " pattered region 203 " can be different with the color of " non-patterned areas 204 ".
Wherein, as long as described mask can realize the mask of patterning at matrix surface, the most not
It is defined especially, but specifically, it is possible to use impregnated in hydroxide solution in execution
Step time the heat that applies there is resistance can the heat dissipation film etc. of the demoulding.
And then, described in the step that is rinsed, be on matrix, form thin film after, concrete and
Speech, after matrix impregnated in the step of hydroxide solution, by rinsing matrix surface
Remove the step of the hydroxide solution of remained on surface.In this step, by removing at matrix
The hydroxide solution of remained on surface, be possible to prevent to cause because of remaining hydrogen oxide solution is thin
The further formation of film.
Detailed description of the invention
Below according to embodiment and experimental example, illustrate in greater detail the present invention.
But, following embodiment and experimental example are the example to the present invention, present disclosure
It is not limited to following embodiment and experimental example.
Embodiment 1.
The test piece comprising magnesium of 1cm × 1cm × 0.4T be impregnated in alkaline cleaning fluid and carries out defat,
By the test piece of defat 100 DEG C, the NaOH solution of 10 weight % impregnates 40 minutes.So
After, with test piece described in distilled water flushing, it is dried in drying oven, thus prepares through aobvious
The test piece that color processes.
Embodiment 2.
Replace in described embodiment 1, magnesium test piece is molten at the NaOH of 100 DEG C, 10 weight %
In liquid impregnate 40 minutes, but dipping 30 minutes, in addition, with described embodiment 1
Identical method is carried out, thus preparation is by the test piece of color development treatment yellowly.
Embodiment 3.
Replace in described embodiment 1 by magnesium test piece at 100 DEG C, the NaOH of 10 weight %
In solution impregnate 40 minutes, but dipping 55 minutes, in addition, with described embodiment
1 identical method is carried out, thus preparation is by the empurpled test piece of color development treatment.
Embodiment 4.
Replace in described embodiment 1, magnesium test piece is molten at the NaOH of 100 DEG C, 10 weight %
In liquid impregnate 40 minutes, but dipping 80 minutes, in addition, with described embodiment 1
Identical method is carried out, thus preparation is become the test piece of green by color development treatment.
Embodiment 5.
The test piece comprising magnesium of 4cm × 7cm × 0.4T be impregnated in alkaline cleaning fluid take off
Fat, pastes mask in the test piece of defat.Then, at 100 DEG C, the NaOH of 10 weight %
Solution impregnates 20 minutes, and with after distilled water flushing, is dried in drying oven,
Thus the colour developing test piece that preparation is patterned.When observing by the naked eye described test piece, it is possible to really
Recognize and have grain pattern at patterned surface.
Embodiment 6.
The test piece comprising magnesium of 1cm × 1cm × 0.4T be impregnated in alkaline cleaning fluid and carries out defat,
And by the test piece of defat 100 DEG C, the NaOH solution of 10 weight % impregnates 50 minutes.
Then, the most dried with test piece described in distilled water flushing, dry test piece coats liquid
Unglazed clear dope, is dried in the baking oven of 120 DEG C-150 DEG C, thus prepares unglazed
The test piece of bright coating.Now, the thickness of the unglazed clear dope of coating is below 5 μm.
Embodiment 7.
In embodiment 7 except by described embodiment 6 by magnesium test piece 100 DEG C, 10 weight
In the NaOH solution of % dipping within 50 minutes, be replaced by dipping 85 minutes outside, other with
The method that described embodiment 6 is identical is carried out, thus prepares the colour developing test piece of unglazed transparent coating.
Embodiment 8.
The unglazed transparent smears used in described embodiment 6 has been replaced by by embodiment 8
Outside light/unglazed transparent smears, other are carried out with the method identical with described embodiment 6,
Thus preparation has the colour developing test piece of light/unglazed transparent coating.
Comparative example 1 to comparative example 3.
In comparative example 1 to comparative example 3 by described embodiment 1 by magnesium test piece 100 DEG C,
In the NaOH solution of 10 weight %, dipping is replaced by 100 DEG C in distilled water for 40 minutes
Outside time shown in dipping table 1 below, other are carried out with the method identical with described embodiment 1,
Thus preparation is 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 kind
According to the kind of the solution used as hydroxide solution, in order to evaluate the base comprising magnesium
The color speed of material, colour developing power and color uniformity, perform following experiment.
By gross evaluations in embodiment 1 and comparative example 1 to comparative example 3 preparation through colour developing
The colour developing power of the test piece processed.It addition, with embodiment 2 to embodiment 4 and the examination of comparative example 3
Sheet is object, selected any 3 A to C being present in each surface, measures about siting
The CIE colour space in chromaticity coordinates, obtained mean color coordinates poor.Now, chromaticity coordinates poor (Δ E*)
Utilize following mathematical expression 5 to derive, and its result is shown in table 2 below.
[mathematical expression 5]
Table 2
First, by the warp of preparation in gross evaluations embodiment 1 and comparative example 1 to comparative example 3
The colour developing power of the test piece of color development treatment, result shows, uses NaOH aqueous solution as hydroxide
Thing solution and test piece that surface is processed with use distilled water as hydroxide solution
Test piece is compared, and the color speed of test piece is faster.More specifically, carry out with NaOH aqueous solution
The test piece of the embodiment 1 processed is being dipped through the time point of 10 minutes, maintains as examination
The silver color of sheet inherent colour, but later through the time point of 30 minutes, show yellow.But
It is, in the test piece of comparative example 1 to the comparative example 3 carrying out processing with distilled water, to be dipped through
Time is the test piece of the comparative example 1 of 40 minutes, and the color variable quantity on its surface is little, and does not shows
The base material that color processes compares, and demonstrates that aberration is little.Additionally confirming, the time of being dipped through is
The test piece of the comparative example 2 of 1 hour, slowly develops the color and is shown as yellow, through impregnating 2 hours
The test piece of comparative example 3, be shown as yellow, but compared with the test piece of described embodiment 1, aobvious
The colour developing power of the color shown significantly reduces.
Below, with reference to described table 2, it is known that carry out the test piece of color development treatment with NaOH aqueous solution,
The color even of its display.More specifically, the reality of color development treatment is carried out with NaOH aqueous solution
Executing the test piece of example 2, it is shown as in the chromaticity coordinates difference of any 3 present on test piece
Δ L* < 0.06,0.23≤Δ a* < 0.31,0.01≤Δ b* < 0.21 and 0.237≤Δ E* < 0.375.Separately
Outward, can confirm that, the chromaticity coordinates difference of the test piece of embodiment 3 and embodiment 4 is also
0.02≤Δ L* < 0.24,0.09≤Δ a* < 0.44,0.03≤Δ b* < 0.47 and 0.271≤Δ E* < 0.630,
Its deviation is little.But, the test piece of comparative example 3, its chromaticity coordinates difference is shown as
2.25≤Δ L* < 2.88,0.79≤Δ a* < 1.01,3.11≤Δ b* < 3.23 and 3.919≤Δ E* < 4.40,
Chromaticity coordinates difference is big.
Knowable to this result, for comprising the color development treatment of the base material of magnesium, impregnated in and comprise
NaOH、KOH、Mg(OH)2、Ca(OH)2、Ba(OH)2Deng hydroxide solution, no
Only efficiency is remarkable, and the color shown is the most 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 of the base material comprising magnesium, perform following reality
Test.
The test piece comprising magnesium of 1cm × 1cm × 0.4T be impregnated in alkaline cleaning fluid and carries out defat,
And by the test piece of defat 100 DEG C, the NaOH aqueous solution of 10 weight % impregnates 240 minutes.
Now, after described test piece be impregnated in NaOH aqueous solution, every 5 minutes to 10 minutes,
The color of display by gross evaluations.It addition, in order to confirm at the thin film that strip generates
Composition and thickness, to be dipped through 10 minutes, 170 minutes and the time point of 240 minutes
Test piece be object, carried out X-ray diffraction analysis and the transmission electron microscope of thin film
(TEM) shooting.Described result is shown in Fig. 4.
Demonstrate, the base material through color development treatment of the present invention, soak according in hydroxide solution
Time of stain and the color that shows is different.More specifically, if by the silver color of non-color development treatment
Test piece impregnated in hydroxide solution, then after 30 minutes, be shown as successively yellow,
Orange, red, purple, blue and green, this color change process over time, tool
There is certain cycle, repeatedly occur.
It addition, after impregnated in the NaOH aqueous solution of 10 weight %, to through 10 minutes,
The test piece thin film of 170 minutes and 240 minutes carries out the result of X-ray diffraction, three test pieces thin
Film be respectively provided with represent with 2 θ 18.5 ± 1.0 °, 38.0 ± 1.0 °, 50.5 ± 1.0 °, 58.5 ± 1.0 °,
62.0 ± 1.0 ° and the diffraction peak of 68.5 ± 1.0 °, confirm to comprise brucite (brucite) crystal formation
Magnesium hydroxide (Mg (OH)2)。
And then, understanding with reference to Fig. 4, the average thickness of described thin film is along with the process of dip time
And increase to about 200nm, 600nm and 900nm respectively.
Understanding from the above, the base material through color development treatment of the present invention is by including containing magnesium hydrogen
Oxide (Mg (OH)2) thin film, thus develop the color.Furthermore it is possible to according to the base material comprising magnesium
Dip time, control to be formed at the thickness of thin film on surface, thus can also regulate display
Color.
Experimental example 3. is through the Evaluation of Corrosion Resistance 1 of the base material of color development treatment
In order to evaluate the corrosion resistance of the base material through color development treatment of the present invention, perform following reality
Test.
By the test piece of the non-color development treatment comprising magnesium of 1cm × 1cm × 0.4T and in embodiment 4
The middle test piece through color development treatment, is utilized respectively salt mist tester (SST, Salt Spray Tester),
The saline of 5 weight % is sprayed equably, by gross evaluations through 942 hours at 35 DEG C
After strip, its result is shown in Fig. 5.
Understanding with reference to Fig. 5, the base material through color development treatment of the present invention, its corrosion resistance significantly improves.
More specifically, the test piece of non-color development treatment is shown as corroding due to saline, test piece table
Face observes by the naked eye the most uniform, and deforms.In contrast, it is thus identified that in surface shape
Simply there is the decolouring of small degree in the test piece through color development treatment becoming to have the embodiment 4 of thin film,
The surface of test piece does not deforms, but uniformly.
Knowable to this result, the base material through color development treatment of the present invention is thin by being formed on surface
Film, thus improve corrosion resistance.
Experimental example 4. is through the Evaluation of Corrosion Resistance 2 of the base material of color development treatment
In order to evaluate the corrosion resistance of the base material through color development treatment of the present invention, perform following reality
Test.
By the test piece of the non-color development treatment comprising magnesium of 1cm × 1cm × 0.4T and with the place that do not develops the color
The identical test piece of described test piece of reason, 100 DEG C, in the NaOH aqueous solution of 10 weight %
Dipping 75 minutes, 150 minutes and 230 minutes respectively, and prepared the test piece obtained.
Then, when the test piece of preparation being impregnated in the saline of 0.5 weight %, through 72
After hour, the test piece with non-color development treatment and the test piece through color development treatment have carried out galvanic electricity for object
Bit polarization is tested.The dynamic potential polarization curve of mensuration is shown in Fig. 6, and by galvanic electricity
Bit polarization curve carries out Ta Feier analysis (Tafel analysis), has obtained the polarization from each test piece
Corrosion electric current density (the I that the Ta Feier region (± 200mV) of curve obtainscorr), corrosion potential
(Ecorr) and Pitting Potential (Epit).It addition, from the value utilizing following mathematical expression 6 to derive, calculate
Corrosion rate (Corr.Rate).Its result is shown in table 3 below.
[mathematical expression 6]
In described mathematical expression 6, E.W is magnesium atom amount/exchange electron amount=24.305/2,
Density is 1.738g/cm3。
Table 3
By 3, the corrosion resistance through the base material of color development treatment of the present invention is outstanding.
More specifically, to impregnating 75 minutes, 150 minutes in hydroxide solution respectively
And the test piece of 230 minutes carries out potentiodynamic polarization test with the test piece of non-color development treatment, result is true
Recognize the test piece through color development treatment and demonstrate the corrosion rate in about 0.0004 to 0.0013mm/ year
(Corr.rate), the color development treatment time is the longest, and corrosion rate is gradually lowered.On the other hand,
For the test piece of non-color development treatment, confirm corrosion rate and be about 0.4322mm/, aobvious with warp
The test piece that color processes is compared, and corrosion rate is the highest more than 330 times.
Knowable to this result, the thin film formed on the surface of the base material through color development treatment not only exists
Surface Show Color, but also simultaneously work as preventing from comprising the effect of the corrosion of the matrix of magnesium.
Experimental example 5. forms the evaluation of physical properties of the base material through color development treatment of face coat
In order to evaluate corrosion resistance and the attachment of the base material through color development treatment being formed with face coat
Power, performs following experiment.
So that embodiment 6 and embodiment 8 to be formed the test piece through color development treatment of face coat it is
Object, tests with the condition identical with described experimental example 3, and in the time of brine spray
Through 72 hours, evaluate test piece corrosion resistance of surface and through color development treatment base material be formed at
The adhesive force of the face coat on surface.Now, described adhesive force is surveyed by mark signature grid adhesive tape
Examination is evaluated.More specifically, blade is utilized to mark tool on the face coat having been coated with
After having 6 lines of horizontal 6 lines intersected and longitudinal direction that 1mm is spaced, at horizontal line with vertical
The cross point of line Continuous pressing device for stereo-pattern securely, and by measuring when removing rapidly described adhesive tape, phase
The method of the area of the face coat being stripped for the test piece gross area, evaluates adhesive force.
Its result understands, the base material through color development treatment being formed with face coat of the present invention resistance to
Corrosivity is excellent, and the adhesive force between the base material and face coat of color development treatment is the most excellent
Different.More specifically, it is formed with matt surface coating or has the enforcement of light/matt surface coating
The test piece of example 6 and embodiment 8 spray saline time after 72 hours, do not produce
The areal deformation caused by corrosion.Additionally, the test piece to carrying out corrosion resistance experiment carries out attached
Adhesion assessment result can confirm that, the area of the face coat being stripped by adhesive tape is at face coat
Less than the 5% of the gross area.
Knowable to this result, the base material through color development treatment being formed with face coat of the present invention
Not only there is the corrosion resistance of excellence, and have between the base material and face coat of color development treatment
Remarkable adhesive force.
Therefore, the base material through color development treatment of the present invention is by impregnated in bag by the matrix comprising magnesium
Containing NaOH, KOH, Mg (OH)2、Ca(OH)2、Ba(OH)2Deng hydroxide solution in,
Forming thin film on surface such that it is able to improve the homogeneity on surface and corrosion resistance, having can be
The advantage of Show Color equably in short time.Therefore, the described base material through color development treatment makes
With magnesium material construction exterior material, automobile decoration, particularly cover for mobile phone body component etc.
In electrical equipment, electronic part material field, it is possible to be efficiently used.
Industrial applicibility
The base material through color development treatment of the present invention on the surface of the matrix comprising magnesium, formed containing with
The thin film of compound that chemical formula 1 represents such that it is able to improve the homogeneity of substrate surface and resistance to
Erosion property, it is possible to Show Color the most equably.Therefore, the described base through color development treatment
Material is using the construction exterior material of magnesium material, automobile decoration, particularly cover for mobile phone body
In the electrical equipment such as part, electronic part material field, it is possible to be efficiently used.
Claims (16)
1. the base material of a color development treatment, it is characterised in that including:
Comprise the matrix of magnesium；And
Thin film, is formed on described matrix, and containing the compound represented with following chemical formula 1；
Wherein, the arbitrary region (horizontal 1cm and vertical 1cm) being present on described thin film includes
Mean color coordinates poor (Δ L*, Δ a*, Δ b*) between each point of any 3 points meets Δ L* ＜
0.6, more than one the condition in Δ a* ＜ 0.6 and Δ b* ＜ 0.5,
[chemical formula 1]
M(OH)m
In described chemical formula 1, M includes selecting free Na, K, Mg, Ca and Ba to form
More than a kind of group, m is 1 or 2.
The base material of color development treatment the most according to claim 1, it is characterised in that thin film
Average thickness be 1 to 2 μm.
The base material of color development treatment the most according to claim 1, it is characterised in that thin film
There is the patterning realizing required grain pattern on the matrix comprise magnesium.
The base material of color development treatment the most according to claim 3, it is characterised in that grain pattern
Embody by meeting the mean thickness variation of the thin film of the condition of following mathematical expression 1,
[mathematical expression 1]
5nm≤|T1-T2| ＜ 2.0 μm
In described mathematical expression 1, T1Represent the Film Average Thickness of pattered region, T2Table
Show the Film Average Thickness of non-patterned areas.
The base material of color development treatment the most according to claim 1, it is characterised in that
When carrying out Evaluation of Corrosion Resistance, meet the condition of following mathematical expression 2,
[mathematical expression 2]
Corrosion rate≤0.01
In described mathematical expression 2,
Corrosion rate represents in 0.5 weight % saline by the warp of potentiodynamic polarization measuring
The extent of corrosion of the base material of color development treatment,
Unit is mm/.
The base material of color development treatment the most according to claim 1, it is characterised in that thin film
Comprise magnesium hydroxide (Mg (OH)2)。
The base material of color development treatment the most according to claim 1, it is characterised in that matrix
Also include rustless steel or titanium (Ti).
The base material of color development treatment the most according to claim 1, it is characterised in that also wrap
Include the face coat being formed on thin film.
9. a base material color development treatment method, it is characterised in that including: the base of magnesium will be comprised
Body impregnated in the step of hydroxide solution.
Base material color development treatment method the most according to claim 9, it is characterised in that hydrogen
Oxide solution includes selecting free NaOH, KOH, Mg (OH)2、Ca(OH)2And Ba (OH)2
More than a kind of the group of composition.
11. base material color development treatment methods according to claim 9, it is characterised in that hydrogen
The concentration of oxide solution is that 1 weight % is to 80 weight %.
12. base material color development treatment methods according to claim 9, it is characterised in that leaching
Stain is to be 90 DEG C to 200 DEG C in the temperature of hydroxide solution in the step of hydroxide solution
In the range of, carry out 1 minute to 500 minutes.
13. base material color development treatment methods according to claim 9, it is characterised in that also
The step that any one in comprising the following steps is above:
Before impregnated in the step of hydroxide solution, surface is carried out the step of pretreatment；
Before impregnated in the step of hydroxide solution, utilize mask that matrix surface is carried out figure
The step of case；And
After the step that impregnated in hydroxide solution, the step being rinsed.
14. base material color development treatment methods according to claim 13, it is characterised in that
Also include: before utilizing mask to carry out the step patterned, the matrix comprising magnesium be impregnated in
The step of hydroxide solution.
15. base material color development treatment methods according to claim 13, it is characterised in that
Mask is can the heat dissipation film of the demoulding.
16. base material color development treatment methods according to claim 9, it is characterised in that
The step that impregnated in hydroxide solution includes:
At N11st impregnation steps of dipping in the hydroxide solution of concentration；And
At NnN-th impregnation steps of dipping in the hydroxide solution of concentration,
Wherein, in the 1st impregnation steps and the n-th impregnation steps, the concentration of hydroxide solution
Meeting following mathematical expression 3 and 4 independently of each other, n is the integer of more than 2, less than 6:
[mathematical expression 3]
8≤N1≤25
[mathematical expression 4]
|Nn-1-Nn|>3
In described mathematical expression 3 and 4, N1 and Nn represents the hydroxide solution of each step
Concentration, unit is weight %.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130164044A KR101543924B1 (en) | 2013-12-26 | 2013-12-26 | Color-treated magnesium and color-treatment method thereof |
| KR10-2013-0164044 | 2013-12-26 | ||
| KR1020130164047A KR101584413B1 (en) | 2013-12-26 | 2013-12-26 | Surface treated metallic material and surface treatment method for metallic material |
| KR10-2013-0164045 | 2013-12-26 | ||
| KR10-2013-0164047 | 2013-12-26 | ||
| KR1020130164045A KR101543925B1 (en) | 2013-12-26 | 2013-12-26 | Patterned color-magnesium and patterning method thereof |
| KR10-2013-0164046 | 2013-12-26 | ||
| KR1020130164046A KR101543926B1 (en) | 2013-12-26 | 2013-12-26 | Color-treated magnesium and color-treatment 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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| CN105849315A true CN105849315A (en) | 2016-08-10 |
| CN105849315B CN105849315B (en) | 2018-09-21 |
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| CN107849701A (en) * | 2015-07-10 | 2018-03-27 | Posco公司 | Substrate through color development treatment and the color development treatment method for it |
| 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 |
| CN111962054A (en) * | 2020-08-28 | 2020-11-20 | 湖州冠居金属装饰材料股份有限公司 | Copper ornament coloring method suitable for archaizing building |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105849315B (en) | 2018-09-21 |
| EP3088565A1 (en) | 2016-11-02 |
| EP3088565B9 (en) | 2019-10-23 |
| CN105849314B (en) | 2018-06-26 |
| EP3088562B1 (en) | 2019-05-08 |
| EP3088564A1 (en) | 2016-11-02 |
| EP3088566A1 (en) | 2016-11-02 |
| EP3088562A4 (en) | 2017-03-08 |
| EP3088563A1 (en) | 2016-11-02 |
| EP3088566A4 (en) | 2017-03-08 |
| EP3088564A4 (en) | 2017-03-08 |
| CN105849313B (en) | 2018-03-09 |
| EP3088563B1 (en) | 2019-05-15 |
| EP3088565B1 (en) | 2019-06-12 |
| EP3088563A4 (en) | 2017-03-08 |
| EP3088562A1 (en) | 2016-11-02 |
| CN105849314A (en) | 2016-08-10 |
| EP3088566B1 (en) | 2018-08-15 |
| EP3088564B1 (en) | 2019-05-22 |
| CN105849313A (en) | 2016-08-10 |
| EP3088565A4 (en) | 2017-03-08 |
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