CN108650826A - Plank and preparation method thereof, shell and mobile terminal - Google Patents
Plank and preparation method thereof, shell and mobile terminal Download PDFInfo
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- CN108650826A CN108650826A CN201810598571.8A CN201810598571A CN108650826A CN 108650826 A CN108650826 A CN 108650826A CN 201810598571 A CN201810598571 A CN 201810598571A CN 108650826 A CN108650826 A CN 108650826A
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- metal
- protrusion
- plank
- layer
- base material
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1646—Characteristics of the product obtained
- C23C18/165—Multilayered product
- C23C18/1653—Two or more layers with at least one layer obtained by electroless plating and one layer obtained by electroplating
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1689—After-treatment
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
-
- 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
- C23C28/02—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 only coatings only including layers of metallic material
- C23C28/023—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 only coatings only including layers of metallic material only coatings of metal elements only
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
- H05K5/0243—Mechanical details of casings for decorative purposes
Abstract
The invention discloses plank and preparation method thereof, shell and mobile terminals.The plank includes：Base material is provided with protrusion on the one side of base material；Transition zone, transition zone is arranged on the surface that base material has protrusion side, and covers the region other than protrusion；The side far from base material in transition zone is arranged in the coat of metal, the coat of metal；Wherein, surface of the coat of metal far from transition zone side is flush with the top surface of protrusion.The cost of the plank is low as a result, and surface smoothness is good, transition zone and the coat of metal can make plank have metal-like, and the hardness, intensity and corrosion resistance of plank are promoted, there is preferable metal appearance effect, mechanical performance is preferably and appearance surfaces flatness is good.
Description
Technical field
The present invention relates to electronic device fields, and in particular, to plank and preparation method thereof, shell and mobile terminal.
Background technology
With the upgrading of consumption structure and the raising of hierarchy of consumption, the consumption idea of people is also changed.For example,
Field of mobile terminals, the configuration of the no longer single concern mobile terminal of people and performance, appearance, which is increasingly becoming, influences user most
Eventually an important factor for selection.In order to meet appearance demand of the user to mobile terminal, manufacturer constantly explores and improves mobile whole
The material selection of end housing, modeling structure design and processing process, while by the intensity of mobile terminal case, hardness etc.
Performance is combined with appearance.That is the performances pair such as the material, structure, color of mobile terminal case, texture and intensity, hardness
The appearance of mobile terminal plays decisive role.Specifically, the material of mobile terminal case can select plastic cement, metal,
Glass etc., corresponding process of surface treatment have spraying, oxidation, plated film etc., and be combined with performance for appearance
Consider, the mobile terminal case with high intensity, high rigidity and metal appearance effect becomes the hot spot studied at present.
Therefore, current plank and preparation method thereof, shell and mobile terminal, still have much room for improvement.
Invention content
In one aspect of the invention, the present invention proposes a kind of plank.The plank includes：Base material, the base material
Protrusion is provided on one side；Transition zone, the transition zone are arranged on the surface that the base material has the protrusion side
On, and cover the region other than the protrusion；The coat of metal, the coat of metal are arranged in the transition zone far from the base
The side of material；Wherein, surface of the coat of metal far from the transition zone side, is flush with the top surface of the protrusion.
The cost of the plank is low as a result, and surface smoothness is good, and transition zone and the coat of metal can make plank have metal
Texture, and promote the hardness, intensity and corrosion resistance of plank；The plank is when being used to form mobile terminal case, Ke Yixian
Work reduces cost, and shell is made to have preferable metal appearance effect, and intensity is high, hardness is big, and scratch resistance abrasionproof is good, corrosion resistance
Excellent, appearance surfaces flatness is good.
In another aspect of the present invention, the present invention proposes a kind of preparation method of plank.The method includes：It provides
Base material is provided with protrusion on the one side of the base material；It is formed on the surface that the base material has the protrusion side
Transition metal, removal covers the transition metal of the protrusion, to obtain transition zone；Based on the transition zone shape
At the coat of metal, and the coat of metal is enabled to be flush with the top surface of the protrusion far from the surface of the transition zone side.
Plank prepared by this method can be previously described plank, thus, it is possible to be had with previously described plank
The whole features and advantage having, details are not described herein.Generally speaking.This method can be easy plank, technique is prepared
Simply, production efficiency is high, at low cost；Prepared plate surface flatness is good, and transition zone and the coat of metal can make plank
With metal-like, and promote the hardness, intensity and corrosion resistance of plank；The plank is being used to form mobile terminal case
When, cost can be significantly reduced, makes shell that there is preferable metal appearance effect, intensity is high, hardness is big, and scratch resistance abrasionproof is good,
Excellent anti-corrosion performance, appearance surfaces flatness are good.
In an additional aspect of the present invention, the present invention proposes a kind of shell.The shell includes：Foregoing plank
Or the plank prepared by foregoing method.
The shell that the shell can be prepared with previously described shell or using previously described method as a result, is had
The whole features and advantage having, details are not described herein.Generally speaking, the shell is of low cost, has preferable metal appearance
Effect, intensity is high, hardness is big, and scratch resistance abrasionproof is good, excellent anti-corrosion performance, and appearance surfaces flatness is good.
In an additional aspect of the present invention, the present invention proposes a kind of mobile terminal.The mobile terminal includes front institute
The shell stated.
As a result, the mobile terminal can have the advantages that possessed by previously described shell whole features and, herein not
It repeats again.Generally speaking, which has preferable metal appearance effect, and shell is at low cost, intensity is high, hardness is big,
Scratch resistance abrasionproof is good, excellent anti-corrosion performance, and appearance surfaces flatness is good.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 shows the structural schematic diagram of plank according to an embodiment of the invention；
Fig. 2 shows the structural schematic diagram of plank in accordance with another embodiment of the present invention；
Fig. 3 shows the flow diagram of the method according to an embodiment of the invention for preparing plank；
Fig. 4 shows the part flow diagram of the method according to an embodiment of the invention for preparing plank；
Fig. 5 shows the part flow diagram of the method in accordance with another embodiment of the present invention for preparing plank；
Fig. 6 shows the part flow diagram of the method for preparing plank according to another embodiment of the invention；
Fig. 7 shows the part flow diagram of the method for preparing plank according to another embodiment of the invention；
Fig. 8 shows the flow diagram of the method according to an embodiment of the invention for preparing plank；
Fig. 9 shows the flow diagram of the method in accordance with another embodiment of the present invention for preparing plank；
Figure 10 shows the part flow diagram of the method according to an embodiment of the invention for preparing plank；
Figure 11 shows the flow diagram of the method according to an embodiment of the invention for preparing plank；
Figure 12 shows the structural schematic diagram of mobile terminal according to an embodiment of the invention；
Figure 13 shows the part-structure schematic diagram of shell according to an embodiment of the invention；And
Figure 14 shows the part-structure schematic diagram of shell in accordance with another embodiment of the present invention.
Reference sign：
100：Base material；200：Transition zone；210：First sub-layer；220：Second sub-layer；300：The coat of metal；10：Protrusion；
20：Chemical plating metal；30：Nanometer plating metal；1000：Mobile terminal.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In one aspect of the invention, the present invention proposes a kind of plank.It according to an embodiment of the invention, should with reference to figure 1
Plank includes：Base material 100, transition zone 200 and the coat of metal 300.According to an embodiment of the invention, the one side of base material 100
On be provided with protrusion 10.I.e.：On the one side of base material 100, it is formed with protrusion.According to an embodiment of the invention, transition zone
200 are arranged on the surface that base material 100 has 10 side of protrusion, and cover the region other than protrusion 10.According to the present invention
Embodiment, the coat of metal 300 is arranged in side of the transition zone 200 far from base material 100.Wherein, the coat of metal 300 is far from transition
The surface of 200 side of layer, is flush with the top surface (surface C as shown in Figure 1) of protrusion 10.
The cost of the plank is low as a result, and surface smoothness is good, and transition zone and the coat of metal can make plank have metal
Texture, and promote the hardness, intensity and corrosion resistance of plank；The plank is when being used to form mobile terminal case, Ke Yixian
Work reduces cost, and shell is made to have preferable metal appearance effect, and intensity is high, hardness is big, and scratch resistance abrasionproof is good, corrosion resistance
Excellent, appearance surfaces flatness is good.
In order to make it easy to understand, realizing that the principle of above-mentioned technique effect is described in detail to the plank below：
Inventor has found that for current mobile terminal case in the prevalence of of high cost, appearance is poor, manufacturing cost, outer
The problems such as sight effect and intensity three are difficult to combine.Inventor has found, when preparing shell using metal material, although by force
Degree, hardness may also reach up greatly the appearance of metal-like, but the complex process of the preceding processing of metal material, of high cost；And
When preparing shell using the strong plastic cement of plasticity, mold injection may be used in preceding processing, of low cost, but at plastic shell surface
Science and engineering skill is to cause the shell feel prepared and apparent visual effect poor, it is difficult to reach preferable gold by the way of spraying
Belong to texture effect, also, the intensity of plastic material itself is low, hardness is low, scratch resistance abrasionproof is poor.Although can also be in plastic shell
The appearance of metal-like is realized by the way that metal layer is arranged, but for the considerations of meeting antenna communication demand, is needed in antenna in surface
Area handles metal layer, in order to avoid form signal shielding.Therefore, it generally requires to carry out complicated masking, etching and antenna
Slot is filled and led up or the techniques such as later stage color treatments, causes the raising of production cost, and the production time extends, and production efficiency reduces.
If it is possible to a kind of mobile terminal case with preferred metal texture is prepared using the strong plastic cement of plasticity, it is at low cost
There are the performances such as high intensity, high rigidity while honest and clean, will largely solve the above problems, and greatly improve the mobile terminal shell
The market competitiveness of body.
Inventor has found, by the way that protrusion is arranged on the one side of base material, the antenna field institute such as casting of electronic device is right
The protrusion is arranged in the region answered, and the surface of the coat of metal formed is flush with the top surface of the protrusion, thus, it is possible to
Easy acquisitions surface smoothness is preferable, the plastic casing with metal appearance texture.Since base material 100 is by plastic material shape
At, therefore above-mentioned protrusion only needs the shape of change injection molding mould plate, without carrying out complicated masking, etching to plank
And antenna slot fills and leads up processing.
It should be noted that surface of the above-mentioned coat of metal 300 far from 200 side of transition zone, the top surface with protrusion 10
It is flush, refers in particular under conditions of observing by the naked eye, surface of the coat of metal 300 far from 200 side of transition zone, with protrusion
Without apparent step, overall surface is uniform on the surface of 10 top surface plank, and flatness is good.In some specific embodiments of the present invention
In, which can be used for preparing the center or battery cover board of mobile terminal, and the region where above-mentioned protrusion can be antenna
The region at place, as a result, the region where antenna there is no transition zone and the coat of metal, can be before not influencing aerial signal
It puts, eliminates the difference in height between protrusion and transition zone, the coat of metal, keep the surface smoothness of shell good；Also, it is formed
Center or battery cover board are at low cost, have preferable metal appearance effect, and intensity is high, hardness is big, and scratch resistance abrasionproof is good, corrosion-resistant
It has excellent performance.
According to an embodiment of the invention, the height of protrusion 10 is equal to the overall thickness of transition zone 200 and the coat of metal 300.
As shown in Figure 1, by taking base material 100 is plane away from the surface of 10 side of protrusion as an example, what is be arranged on the one side of base material 100 is convex
The height for going out portion 10 is A, i.e. height A is equal to the overall thickness of transition zone 200 and the coat of metal 300.The plank eliminates convex as a result,
Go out the difference in height between portion 10 and transition zone 200 and the coat of metal 300, keeps the surface smoothness of plank good.According to the present invention
Embodiment, the height of protrusion 10 is not particularly limited, need to only meet the overall thickness of transition zone 200 and the coat of metal 300 with
The height of protrusion 10 is equal.For example, according to an embodiment of the invention, the height of protrusion 10 can be 20~100 micro-
Rice.In some specific embodiments of the present invention, the height of protrusion 10 can be 20 microns, 50 microns, 100 microns.As a result,
The difference in height between the transition zone, the coat of metal and the protrusion of formation can be eliminated, keeps the surface smoothness of plank good.
It should be strongly noted that base material 100 can not also be plane away from the surface of 10 side of protrusion, but have
Certain concaveconvex structure.At this point, need to only meet the height that transition zone 200 is equal to protrusion 10 with the overall thickness of the coat of metal 300, and
Naked-eye observation is less than apparent segment difference and step.
According to an embodiment of the invention, base material 100 can be formed by insulating materials.The cost of base material is low as a result, easily
Processing, can further promote the performance and appearance of plank.According to an embodiment of the invention, above-mentioned formation base material 100
The concrete type of insulating materials be not particularly limited, those skilled in the art can select according to actual demand.According to
The embodiment of the present invention, formed base material 100 material include makrolon (PC), polyethylene terephthalate (ABS) with
And at least one of the blend of makrolon and polyethylene terephthalate (PC-ABS).The cost of base material is low as a result,
Plasticity is good, and easy processing is light, can further promote the performance and appearance of plank.According to an embodiment of the invention,
The concrete shape of base material 100 is not particularly limited, and need to only be met and is provided with protrusion 10 on the one side of base material 100.Root
According to the embodiment of the present invention, the specific forming position, frontal projected area on base material and quantity of protrusion 10 in base material 100
It is not particularly limited, those skilled in the art can select according to actual demand.For example, base material 100 can have it is more
A protrusion 10, and frontal projected area of each protrusion 10 on base material 100 is different.
Inventor has found by many experiments, although the method for forming metal layer on plastic rubber substrate is varied, wherein
Binding force between chemical plating metal and plastic rubber substrate that chemical plating is formed is more preferable, and cost is also more cheap, but chemical plating shape
At chemical plating metal appearance tactile impression it is poor.Therefore, the method that can use chemical plating first, forms transition zone on base material,
And then it can ensure the binding force between subsequent structural and base material.And the transition zone formed has preferable electric conductivity, therefore
The quality being subsequently electroplated can be improved.The coat of metal 300 can be by plating be formed on transition zone 200, thus, it is possible to
The structure of the easy control coat of metal 300：The position of the coat of metal 300 can rely on and adjust transition zone 200, that is, the electricity being electroplated
The specific location of pole is regulated and controled, and thickness can be more accurately controlled by controlling electroplating parameter.
With reference to figure 2, transition zone 200 may further include：First sub-layer 210 and the second sub-layer 220.According to the present invention
Embodiment, the first sub-layer 210 is arranged on the surface that base material 100 has 10 side of protrusion, and covers other than protrusion 10
Region.According to an embodiment of the invention, the second sub-layer 220 is arranged in the first side of the sub-layer 210 far from base material 100.As a result,
First sub-layer and the second sub-layer can enhance the case hardness, intensity, corrosion resistance of plank, and plank is made to have metal-like.
According to an embodiment of the invention, the mode for forming the first sub-layer 210 is not particularly limited, and those skilled in the art can
To be selected according to actual demand.For example, according to an embodiment of the invention, the first Asia can be formed by way of chemical plating
Layer 210.According to an embodiment of the invention, the material for forming the first sub-layer 210 is not particularly limited, and those skilled in the art can be with
It is selected according to actual demand.For example, formed the first sub-layer 210 material may include nickel, copper, silver, gold and cobalt extremely
It is one of few.According to a particular embodiment of the invention, the material for forming the first sub-layer 210 can be nickel.Implementation according to the present invention
Example, the thickness of the first sub-layer 210 are not particularly limited, and those skilled in the art can select according to actual demand.For example,
According to an embodiment of the invention, the thickness of the first sub-layer 210 can be 2~20 microns.In some specific embodiments of the present invention
In, the thickness of the first sub-layer 210 can be 2 microns, 2.5 microns, 5 microns, 10 microns, 15 microns, 20 microns.Thus, it is possible to
Further promote the performance and appearance of plank.
According to an embodiment of the invention, the mode for forming the second sub-layer 220 is not particularly limited, and those skilled in the art can
To be selected according to actual demand.For example, according to an embodiment of the invention, the second sub-layer can be formed by nano-plating
220.According to an embodiment of the invention, the material for forming the second sub-layer 220 is not particularly limited, and those skilled in the art can root
It is selected according to actual demand.For example, the material for forming the second sub-layer 220 may include at least one of nickel, chromium and zinc.Root
According to specific embodiments of the present invention, the material for forming the second sub-layer 220 can be nickel.According to an embodiment of the invention, second is sub-
Layer 220 is porous structure, and the aperture of porous structure is less than 10 nanometers.In some specific embodiments of the present invention, the second sub-layer
The aperture of porous structure can be 4 nanometers, 6 nanometers, 8 nanometers, 9 nanometers in 220.The second sub-layer can make the table of shell as a result,
Face is finer and close and has better wearability and corrosion resistance.According to an embodiment of the invention, the hardness of the second sub-layer 220
Not less than 8H.In some specific embodiments of the present invention, the hardness of the second sub-layer 220 can be 8H, 9H.Second is sub- as a result,
The hardness of layer is high, can significantly increase the case hardness of plank.According to an embodiment of the invention, the surrender of the second sub-layer 220 is strong
Degree is 700~1000MPa.In some specific embodiments of the present invention, the yield strength of the second sub-layer 220 can be
700MPa、800MPa、900MPa、1000MPa.The surface strength of the second sub-layer is big as a result, can significantly increase the surface of plank
Intensity.According to an embodiment of the invention, the thickness of the second sub-layer 220 is not particularly limited, and those skilled in the art can basis
Actual demand is selected.For example, according to an embodiment of the invention, the thickness of the second sub-layer 220 can be 3~20 microns.
In some specific embodiments of the present invention, the thickness of the second sub-layer 220 can be 3 microns, 3.5 microns, 5 microns, 10 microns, 15
Micron, 20 microns.Thus, it is possible to further promote the performance and appearance of plank.
According to an embodiment of the invention, the mode for forming the coat of metal 300 is not particularly limited, and those skilled in the art can
To be selected according to actual demand.For example, according to an embodiment of the invention, the coat of metal 300 can be formed by plating.Root
According to the embodiment of the present invention, the material for forming the coat of metal 300 is not particularly limited, and those skilled in the art can be according to reality
Demand is selected.For example, according to an embodiment of the invention, the material that forms the coat of metal 300 may include copper, nickel, zinc,
At least one of cadmium, gold and silver.Thus, it is possible to further enhance the case hardness of plank, intensity, corrosion resistance, further
Promote the surface metal gloss of plank.According to an embodiment of the invention, the thickness of the coat of metal 300 is not particularly limited, ability
Field technique personnel can select according to actual demand.For example, according to an embodiment of the invention, the thickness of the coat of metal 300
It can be 15~60 microns.In some specific embodiments of the present invention, the thickness of the coat of metal 300 can be 15 microns, 20
Micron, 30 microns, 40 microns, 50 microns, 60 microns.Thus, it is possible to further promote the performance and appearance of plank.
According to an embodiment of the invention, which further comprises dope layer.According to an embodiment of the invention, dope layer is set
It sets in side of the coat of metal 300 far from base material 100, alternatively, dope layer is arranged on the top surface of protrusion 10 and metal-plated
300 side far from base material 100 of layer.Dope layer can make the surface color of plank more diversified as a result, be conducive to personalization
Trend, can further promote the appearance of plank.According to an embodiment of the invention, formed dope layer concrete mode,
Material, position, color are not particularly limited, and those skilled in the art can select according to actual demand.For example, according to
The embodiment of the present invention can be by way of printing, in the top surface of protrusion 10 and the coat of metal 300 far from base material
100 side forms dope layer, and the dope layer of formation is insulating materials, when the plank is used to form the shell of mobile terminal and convex
When going out position of the region at 10 place of portion where antenna, the dope layer on 10 top surface of protrusion does not interfere with aerial signal.By
This, can make the surface color of plank more diversified, be conducive to personalized trend, can further promote the appearance of plank
Effect.According to an embodiment of the invention, dope layer can be with certain transparency.The gold for being formed in lower section can be enabled as a result,
Belonging to the reflected light of structure can be projected by dope layer, and obtaining has the appearances such as metal-like and certain color, texture, pattern
Plank.
Alternatively, according to an embodiment of the invention, dope layer can be by way of physical vapour deposition (PVD), in the coat of metal
300 sides far from base material 100 form dope layer, and the material for forming dope layer includes at least one of titanium, tungsten and chromium.By
This, can further promote the metal-like of plank, keep the surface color of plank more diversified, be conducive to becoming for personalization
Gesture can further promote the appearance of plank.According to an embodiment of the invention, the thickness of dope layer is not particularly limited,
Those skilled in the art can select according to actual demand.For example, according to an embodiment of the invention, the thickness of dope layer can
Think 1~20 micron.In some specific embodiments of the present invention, the thickness of dope layer can be 1 micron, 1.5 microns, it is 5 micro-
Rice, 10 microns, 15 microns, 20 microns.Thus, it is possible to further promote the performance and appearance of plank.Art technology
Personnel need to remove the dope layer on 10 top surface of protrusion, it is understood that when dope layer is formed by metal, with
It prevents from forming shielding, hinders the aerial signal transmission in region corresponding to protrusion 10.
In another aspect of the present invention, the present invention proposes a kind of preparation method of plank.Plank prepared by this method
Can be previously described plank, thus, it is possible to have the advantages that possessed by previously described plank whole features and, herein
It repeats no more.Generally speaking.This method can be easy be prepared plank, it is simple for process, production efficiency is high, at low cost；Institute
The plate surface flatness of preparation is good, and transition zone and the coat of metal can make plank have metal-like, and promote plank
Hardness, intensity and corrosion resistance；The plank can significantly reduce cost, make shell when being used to form mobile terminal case
With preferable metal appearance effect, intensity is high, hardness is big, and scratch resistance abrasionproof is good, excellent anti-corrosion performance, and appearance surfaces are smooth
It spends.According to an embodiment of the invention, with reference to figure 3, this method includes：
S100：Base material is provided
In this step, it is provided with protrusion on the one side of base material.According to an embodiment of the invention, the formation material of base material
Material, concrete shape and base material one side on be arranged the specific forming position of protrusion, frontal projected area on base material,
Detailed narration has been carried out before quantity, details are not described herein.In some specific embodiments of the present invention, it is based on the base
Material and the plank prepared using this method, can be further used for preparing the center or battery cover board of mobile terminal, protrusion institute
Corresponding region can be the region where antenna, and the region in the follow-up step of this method where antenna does not form transition
Layer and the coat of metal can eliminate the difference in height between protrusion and the coat of metal under the premise of not influencing aerial signal,
Keep the surface smoothness of shell good；Also, the center or battery cover board formed is at low cost, has preferable metal appearance effect,
Intensity is high, hardness is big, and scratch resistance abrasionproof is good, excellent anti-corrosion performance.
S200：Form transition zone
In this step, transition metal, removal covering protrusion are formed on the surface that base material has protrusion side
Transition metal, to obtain transition zone.
According to an embodiment of the invention, the transition zone finally obtained in the step may include：First sub-layer and second
Sub-layer, the first sub-layer is arranged on the surface that base material has protrusion side, and covers the region other than protrusion, the second sub-layer
It is arranged in side of first sub-layer far from base material.The first sub-layer and the second sub-layer can enhance the case hardness, strong of plank as a result,
Degree, corrosion resistance make plank have metal-like.According to an embodiment of the invention, the forming material of the first sub-layer, before thickness
Detailed narration has been carried out, details are not described herein.According to an embodiment of the invention, the forming material of the second sub-layer, thickness,
Hardness, yield strength, gap aperture before carried out detailed narration, details are not described herein.
The specific steps of above-mentioned formation transition zone are described in detail below.
In some embodiments of the present invention, with reference to figure 4, transition zone can be with through the following steps that form：
S210：Form transition metal
In this step, chemical plating metal is formed on base material by chemical plating, which is transition zone gold
Belong to.Specifically, with reference to (a) and (b) in figure 5, on the surface that base material 100 has 10 side of protrusion, pass through chemical plating shape
At one layer of uniform chemical plating metal 20, i.e., chemical plating metal 20B is formd on the top surface of protrusion 10, while in base material
100 have the surfaces of 10 side of protrusion, and chemical plating metal 20A is also formed on the region in addition to protrusion 10.It needs
Bright, chemical plating metal 20A and 20B constitute chemical plating metal 20, and chemical plating metal 20 is transition metal.
According to an embodiment of the invention, the concrete mode of above-mentioned chemical plating is not particularly limited, and need to only be had in base material convex
Go out formation chemical plating metal on the surface of portion side.For example, according to a particular embodiment of the invention, when chemical plating metal 20
It is that can be reacted 3~8 minutes with plating piece (base material) at normal temperatures using chemical nickel-plating liquid when being formed by nickel, deposition obtains one layer
Uniform chemical nickel.In some embodiments of the invention, chemical nickel-plating liquid may include main salt, reducing agent and auxiliary agent,
In, main salt can be nickel sulfate, and reducing agent can be received for hypophosphorous acid, and auxiliary agent can be triethanolamine.
S220：Form the first sub-layer
In this step, the transition metal that removal covering protrusion is handled using laser carving, to obtain the first sub-layer.Tool
Body, with reference to (b) and (c) in figure 5, the chemical plating metal 20B on 10 top surface of removal protrusion is handled using laser carving, i.e.,：Profit
The transition metal that removal covering protrusion is handled with laser carving, to form the first sub-layer 210.According to an embodiment of the invention,
The design parameter of laser carving processing is not particularly limited, and need to only meet the chemical plating metal on removal protrusion 10.For example, can
To use laser engraving machine, laser carving is carried out to the upper surface of the chemical plating metal 20B on protrusion 10 using radium-shine (laser) light beam,
Regional chemistry plating metal 20B is removed, to obtain the first sub-layer 210.
S230：Form the second sub-layer
In this step, it is based on transition metal and the second sub-layer, the first sub-layer and the second Asia is formed by nano-plating
Layer constitutes transition zone.Specifically, with reference to (c) and (d) in figure 5, in the first side of the sub-layer 210 far from base material 100, by receiving
Rice plating forms the second sub-layer 220.Thus, it is possible to which easy is prepared transition zone, plate prepared by this method is further promoted
The performance and appearance of material.It should be noted that due to the chemical plating metal 20B on protrusion 10 by laser carving at
Therefore reason removal when using nano-plating, the second sub-layer 220 will not be formed on protrusion 10.
According to an embodiment of the invention, the concrete mode of above-mentioned nano-plating is not particularly limited, only need to be in the first sub-layer
210 sides far from base material 100 form the second sub-layer 220.For example, when the second sub-layer 220 is formed by nickel, can make
With nano-plating nickel liquid 50~60 degrees Celsius, PH=3~5,2~5A/dm of current density2Under conditions of, to plating piece (base material)
Processing 8~15 minutes, obtains the second required sub-layer 220.In some embodiments of the invention, nano-plating nickel liquid can wrap
Include nickel sulfate, nickel oxide, boric acid, nano nickel basal liquid and auxiliary agent.
Other embodiments according to the present invention, with reference to figure 6, transition zone can be with through the following steps that form：
S10：Form chemical plating metal
In this step, chemical plating metal is formed on base material by chemical plating.Specifically, with reference in figure 7 (a) and
(b), on the surface that base material 100 has 10 side of protrusion, one layer of uniform chemical plating metal 20 is formed by chemical plating, i.e.,
Chemical plating metal 20B is formd on the top surface of protrusion 10, while there is the surface of 10 side of protrusion in base material 100, is removed
Chemical plating metal 20A is also formed on region other than protrusion 10.
According to an embodiment of the invention, the concrete mode of chemical plating can have side identical with previously described chemical plating
Formula, and when chemical plating metal is formed by nickel, the chemical nickel-plating liquid utilized can be with previously described chemical nickel plating liquid phase
Together, details are not described herein.
S20：It forms nanometer and plates metal
In this step, it is based on chemical plating metal, forming nanometer by nano-plating plates metal, chemical plating metal and receives
Rice plating metal constitutes transition metal.Specifically, with reference to (b) and (c) in figure 7, formation chemical plating metal 20 far from base
The side of material 100 forms nanometer by nano-plating and plates metal 30.I.e. in the chemical plating metal 20B of formation far from protrusion 10
Side form nanometer and plate metal 30A, while forming nanometer plating in sides of the chemical plating metal 20A of formation far from base material 100
Metal 30B.
According to an embodiment of the invention, the concrete mode of nano-plating can have identical as previously described nano-plating
Mode, and when nanometer plating metal is formed by nickel, the nano-plating nickel liquid that is utilized can be with previously described nanometer electricity
Nickel-plating liquid is identical, and details are not described herein.
S30：The transition metal of removal covering protrusion
In this step, using laser carving handle removal covering protrusion 10 transition metal (including chemical plating metal with
And nanometer plates metal), to obtain transition zone.Specifically, utilizing laser carving processing removal protrusion with reference to (c) and (d) in figure 7
Chemical plating metal 20B and nanometer on 10 plate metal 30A, to be respectively formed the first sub-layer 210 and the second sub-layer 220.
Thus, it is possible to which easy is prepared transition zone, the performance and appearance of plank prepared by this method are further promoted.By
It is high in the nanometer plating metal stability that front is formed, laser carving processing is carried out again after forming nanometer plating metal, will not be caused dirty
The bad phenomenons such as scratch are touched in dirt.
According to an embodiment of the invention, the concrete mode of laser carving processing can have identical as previously described laser carving processing
Mode, details are not described herein.
S300：Form the coat of metal
In this step, it is based on transition zone and forms the coat of metal, and enable the coat of metal far from the surface of transition zone side, with
The top surface of protrusion is flush.Specifically, with reference to figure 1, in side of the transition zone 200 far from base material 100, pass through electroplating processes shape
At the coat of metal 300.It should be noted that removed since the transition zone of covering protrusion 10 is handled by laser carving,
When using electroplating processes, the coat of metal 300 will not be formed on protrusion 10.
According to an embodiment of the invention, surface of the coat of metal far from transition zone side is flush with the top surface of protrusion.
Under conditions of observing by the naked eye, surface of the coat of metal far from transition zone side, the top surface with protrusion is without apparent platform
Rank, overall surface is uniform, and flatness is good.
According to an embodiment of the invention, it when forming transition zone and the coat of metal, needs to control transition zone and metal
The overall thickness of coating is equal to the height of protrusion.The plank that as a result, prepared by this method eliminates protrusion and transition zone, metal
Difference in height between coating keeps the surface smoothness of plank good.
According to an embodiment of the invention, the thickness of the coat of metal, detailed narration has been carried out before forming material,
This is repeated no more.
According to an embodiment of the invention, formed in the coat of metal by electroplating processes, the concrete modes of electroplating processes not by
Especially limitation only need to form the coat of metal in side of the transition zone far from base material.For example, when the coat of metal is formed by chromium,
Can use Cromium electroplating bath solution 30~50 degrees Celsius, PH=2~4,8~12A/dm of current density2Under conditions of, to plating piece (base
Material) it handles 2~5 minutes, obtain the required coat of metal.In some embodiments of the invention, Cromium electroplating bath solution may include chlorine
Change chromium, boric acid and trivalent chromium supporting agent.When the coat of metal is formed by chromium, the appearance of plank can be further promoted, is made outer
Silvery white gloss can be had by seeing, and further promote the metal-like of plank.
According to an embodiment of the invention, the performance and appearance of the plank prepared in order to further enhance this method,
With reference to figure 8, this method further comprises：
S400：Form dope layer
In this step, dope layer is formed.The side far from base material in the coat of metal is arranged in dope layer, alternatively, dope layer
It is arranged on the top surface of protrusion and side of the coat of metal far from base material.Thus, it is possible to make the surface color of plank more
Diversification is conducive to personalized trend, can further promote the appearance of plank.
According to an embodiment of the invention, concrete mode, material, position, the color for forming dope layer are not particularly limited,
Those skilled in the art can select according to actual demand.For example, can pass through printing according to an embodiment of the invention
Mode, on the top surface of protrusion 10 and side of the coat of metal 300 far from base material 100 forms dope layer, the painting of formation
The bed of material is insulating materials, is antenna place when the plank is used to form the region corresponding to the shell of mobile terminal and protrusion 10
Position when, the dope layer on protrusion 10 does not interfere with aerial signal.Thus, it is possible to keep the surface color of plank more various
Change, is conducive to personalized trend, can further promote the appearance of plank.Alternatively, according to an embodiment of the invention, it can
By be by physical vapour deposition (PVD) in a manner of, form dope layer in side of the coat of metal 300 far from base material 100, form coating
The material of layer includes at least one of titanium, tungsten and chromium.Thus, it is possible to further promote the metal-like of plank, make plank
Surface color is more diversified, is conducive to personalized trend, can further promote the appearance of plank.It needs to illustrate
It is that, when forming dope layer using physical vapour deposition (PVD) (PVD), the PVD materials formed on protrusion 10 can be gone by laser carving
It removes, when preparing mobile terminal shell so as to the plank (region corresponding to protrusion is the region where antenna), avoids influencing
The signal of antenna.Wherein, after eliminating PVD materials using laser carving on protrusion, which can also be dyed, as a result,
It can make plank that there is more unified color.According to an embodiment of the invention, it is had been carried out before the thickness of dope layer in detail
Thin narration, details are not described herein.
According to an embodiment of the invention, the performance and appearance of the plank prepared in order to further enhance this method,
With reference to figure 9, before forming transition zone, this method can further include：
S500：Pretreatment
According to an embodiment of the invention, in this step, base material is pre-processed.Specific implementation according to the present invention
Example, with reference to figure 10, which includes：
S1：Oil removal treatment and ungrease treatment
In this step, oil removal treatment and ungrease treatment are carried out successively to base material.According to an embodiment of the invention, at oil removing
Reason and the concrete mode of ungrease treatment are not particularly limited.For example, oil removal treatment and ungrease treatment can use degreasing fluid
Immersion treatment is carried out to base material at a certain temperature, then carries out surface cleaning washing again.Oil removing and degreasing can be protected as a result,
The surface cleaning of base material is demonstrate,proved, without greasy dirt, to be conducive to the uniform roughening of substrate surface.
S2：Surface roughening treatment
In this step, surface roughening treatment is carried out to the base material Jing Guo ungrease treatment.According to an embodiment of the invention, table
The concrete mode of face roughening treatment is not particularly limited.It is roughened for example, it may be base material is immersed in coarsening solution,
In, coarsening solution can be chromic acid, and Coarsening Temperature can be 60~70 degrees Celsius.Roughening can be such that substrate surface is formed micro- as a result,
It is poroid, to ensure that substrate surface forms roughness appropriate, it is good to be further ensured that the transition zone being subsequently formed and base material have
Binding force.
S3：Neutralize operation processing
In this step, the base material Jing Guo surface roughening treatment is carried out neutralizing operation processing.Implementation according to the present invention
Example, the concrete mode for neutralizing operation processing are not particularly limited.It carries out neutralizing operation processing for example, acid solution may be used,
Neutral temperature can be room temperature.The remaining coarsening solution of substrate surface can be removed by neutralizing operation as a result,.
S3：Activation process
In this step, activation process is carried out to the base material by neutralizing operation processing.According to an embodiment of the invention, living
The concrete mode for changing processing is not particularly limited.For example, it may be first by base material immerse prepreg solution (such as stannous sulfate with
The mixed solution of hydrochloric acid) in, go the partial impurities on matrix, then base material is immersed in activating solution (such as palladium bichloride, hydrochloric acid and
The mixed solution of stannous sulfate), the temperature of activating solution can be 35~45 degrees Celsius.Activation process can make by roughening as a result,
Afterwards be in micropore shape substrate surface can uniform adsorption activator colloid, for subsequent chemistry plate catalytic carrier is provided.
According to an embodiment of the invention, the performance and appearance of the plank prepared in order to further enhance this method,
With reference to figure 11, method further comprises：
S600：Dispergation processing
According to an embodiment of the invention, it after being pre-processed, is formed before transition zone, base material is carried out at dispergation
Reason.It should be noted that the core for being adsorbed on the colloid of substrate surface is Metal Palladium, periphery is stannous particle cluster, in water
When washing, it is easy to so that Bivalent Tin is hydrolyzed agglutination, palladium is wrapped in the inside and makes the catalytic action of palladium that can not embody, therefore, into
The processing of row dispergation can remove the Bivalent Tin in the pre dip salt of micelle remained on surface, and so that activator palladium is exposed becomes follow-upization
Learn the catalytic activity point that plating forms the first sub-layer.According to an embodiment of the invention, the concrete mode of dispergation processing is not by special
Limitation.For example, dispergation processing can be carried out using aqueous hydrochloric acid solution, dispergation temperature can be 35~45 degrees Celsius.
According to an embodiment of the invention, after above-mentioned each step, this method can also include the steps that washing, so as to
Remove the remaining solution of substrate surface, wherein wash water used include deionized water, steam pomegranate water and pure water at least it
One.
In an additional aspect of the present invention, the present invention proposes a kind of shell.Shell includes：Foregoing plank is preceding
The plank prepared by the method described in face.The shell can have previously described shell or utilize previously mentioned as a result,
The shell for preparing of method possessed by whole features and advantage, details are not described herein.Generally speaking, the shell is at low cost
It is honest and clean, there is preferable metal appearance effect, intensity is high, hardness is big, and scratch resistance abrasionproof is good, excellent anti-corrosion performance, appearance surfaces
Flatness is good.
In an additional aspect of the present invention, the present invention proposes a kind of mobile terminal.According to a particular embodiment of the invention,
With reference to figure 12, mobile terminal 1000 includes foregoing shell.Thus, it is possible to complete possessed by previously described shell
Portion's feature and advantage, details are not described herein.Generally speaking, which has preferable metal appearance effect, shell
It is at low cost, intensity is high, hardness is big, scratch resistance abrasionproof is good, excellent anti-corrosion performance, and appearance surfaces flatness is good.
According to an embodiment of the invention, mobile terminal 1000 further comprises antenna (not shown).Wherein, antenna is set
It sets in the corresponding position of protrusion of shell.Due to not forming transition zone and the coat of metal on protrusion, into without shadow
The signal for ringing antenna, also, under the premise of not influencing aerial signal, protrusion also eliminate with transition zone, the coat of metal it
Between difference in height, keep the surface smoothness of shell good.
According to an embodiment of the invention, the shell in mobile terminal 1000 can be center or battery cover board.Thus, it is possible to
Further promote the performance and appearance of the mobile terminal.According to an embodiment of the invention, corresponding to the protrusion of shell
Region can be antenna where position.The shell can eliminate protrusion under the premise of not influencing aerial signal as a result,
Difference in height between transition zone, the coat of metal keeps the surface smoothness of shell good.According to a particular embodiment of the invention, base
It, can be to above-mentioned base material elder generation when plank prepared by above-mentioned plank or the above method further prepares center or battery cover board
Forming processes are carried out, center base material or battery cover board base material are formed, then carries out above-mentioned pretreatment successively, dispergation processing, formed
Transition zone, the coat of metal, formation dope layer and etc., ultimately form center or battery cover board.Wherein, forming processes can be pair
Base material is integrally formed, and required middle frame structure or battery cover plate structure is obtained.Specifically, with reference to figure 13, pass through
The center base material that integrated injection molding is formed, D, E, F, G in Figure 13 locate as protrusion, and the region corresponding to protrusion is day
Region where line, the height of protrusion are equal to the overall thickness of the transition zone of subsequent step formation, the coat of metal, eliminate protrusion
Difference in height between portion and transition zone, the coat of metal, and protrusion does not form transition zone and the coat of metal, does not influence antenna
Signal keeps the surface smoothness of shell good.Alternatively, with reference to figure 14, the battery cover board base material formed by integrated injection molding, figure
H in 14 is protrusion, and the region corresponding to protrusion is the region where antenna, and the height of protrusion is equal to subsequent step
The transition zone of formation, the overall thickness of the coat of metal, eliminate the difference in height between protrusion and transition zone, the coat of metal, and convex
Go out portion and do not form transition zone and the coat of metal, do not influence aerial signal, keeps the surface smoothness of shell good.
In the description of the present invention, the orientation or positional relationship of the instructions such as term "upper", "lower" is based on ... shown in the drawings
Orientation or positional relationship is merely for convenience of the description present invention rather than requires the present invention must be with specific azimuth configuration and behaviour
Make, therefore is not considered as limiting the invention.
In the description of this specification, the description of reference term " one embodiment ", " another embodiment " etc. means to tie
The embodiment particular features, structures, materials, or characteristics described are closed to be included at least one embodiment of the present invention.At this
In specification, a schematic expression of the above terms does not necessarily refer to the same embodiment or example.Moreover, the tool of description
Body characteristics, structure, material or feature may be combined in any suitable manner in any one or more of the embodiments or examples.This
Outside, without conflicting with each other, those skilled in the art by different embodiments described in this specification or can show
The feature of example and different embodiments or examples is combined.In addition, it is necessary to illustrate, in this specification, term
" first ", " second " are used for description purposes only, and are not understood to indicate or imply relative importance or implicitly indicate meaning
The quantity of the technical characteristic shown.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (20)
1. a kind of plank, which is characterized in that including：
Base material is provided with protrusion on the one side of the base material；
Transition zone, the transition zone is arranged on the surface that the base material has the protrusion side, and covers the protrusion
Region other than portion；
The coat of metal, the coat of metal are arranged in side of the transition zone far from the base material；
Wherein,
Surface of the coat of metal far from the transition zone side, is flush with the top surface of the protrusion.
2. plank according to claim 1, which is characterized in that the height of the protrusion be equal to the transition zone with it is described
The overall thickness of the coat of metal.
3. plank according to claim 1, which is characterized in that the transition zone includes：
First sub-layer, first sub-layer are arranged on the surface that the base material has the protrusion side, and described in covering
Region other than protrusion；
Second sub-layer, second sub-layer are arranged in the side of first sub-layer far from the base material.
4. plank according to claim 3, which is characterized in that the material for forming first sub-layer include nickel, copper, silver,
At least one of gold and cobalt.
5. plank according to claim 3, which is characterized in that the material for forming second sub-layer include nickel, chromium and
At least one of zinc.
6. plank according to claim 1, which is characterized in that the height of the protrusion is 20~100 microns.
7. plank according to claim 3, which is characterized in that second sub-layer is porous structure, the porous structure
Aperture be less than 10 nanometers.
8. plank according to claim 3, which is characterized in that the hardness of second sub-layer is not less than 8H.
9. plank according to claim 3, which is characterized in that the yield strength of second sub-layer be 700~
1000MPa。
10. plank according to claim 1, which is characterized in that the base material is formed by insulating materials.
11. plank according to claim 1, which is characterized in that the material for forming the coat of metal include copper, nickel, zinc,
At least one of cadmium, gold and silver.
12. plank according to claim 1, which is characterized in that further comprise：
Dope layer, the dope layer are arranged in side of the coat of metal far from the base material, alternatively, the dope layer is arranged
On the top surface of the protrusion and side of the coat of metal far from the base material.
13. a kind of preparation method of plank, which is characterized in that including：
Base material is provided, protrusion is provided on the one side of the base material；
Transition metal is formed on the surface that the base material has the protrusion side, removal covers the institute of the protrusion
Transition metal is stated, to obtain transition zone；
The coat of metal is formed based on the transition zone, and enables the coat of metal far from the surface of the transition zone side, with institute
The top surface for stating protrusion is flush.
14. according to the method for claim 13, which is characterized in that further comprise：
The overall thickness of the transition zone and the coat of metal is controlled, the height of the protrusion is equal to.
15. according to the method for claim 13, which is characterized in that the transition zone through the following steps that obtain：
Form the transition metal on the substrate by chemical plating；
The transition metal that removal covers the protrusion is handled using laser carving, to obtain the first sub-layer；
The second sub-layer, first sub-layer and the second sub-layer structure are formed by nano-plating based on the transition metal
At the transition zone.
16. according to the method for claim 13, which is characterized in that the transition zone through the following steps that obtain：
Chemical plating metal is formed on the substrate by chemical plating；
Based on the chemical plating metal, nanometer is formed by nano-plating and plates metal, the chemical plating metal and the nanometer
It plates metal and constitutes the transition metal；
The transition metal that removal covers the protrusion is handled using laser carving, to obtain the transition zone.
17. according to the method for claim 13, which is characterized in that further comprise：
Dope layer is formed, the dope layer is arranged in side of the coat of metal far from the base material, alternatively, the dope layer
It is arranged on the top surface of the protrusion and side of the coat of metal far from the base material.
18. a kind of shell, which is characterized in that including：
Claim 1~12 any one of them plank or the institute prepared using claim 13~17 any one of them method
State plank.
19. a kind of mobile terminal, which is characterized in that including：
Shell described in claim 18.
20. mobile terminal according to claim 19, which is characterized in that further comprise：
Antenna, the antenna are arranged in the corresponding position of the protrusion of the shell.
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| CN108650826B (en) | 2022-01-18 |
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