KR102282175B1 - Vehicles parts with black color thin film and method for coating black color - Google Patents

Abstract

The present invention relates to a vehicle part having a black coating thin film and a black coating method. Proposed are a vehicle part and a black coating method wherein a multi-layered structure is obtained by sequentially forming a pretreatment layer, a color embodiment layer having a black color and a metallic texture layer on the rear surface of a material, or sequentially forming a pretreatment layer, a metallic texture layer and a color embodiment layer having a black color. According to the present invention, reliability can be ensured while realizing excellent performance such as adhesion to a coating film, which is formed on the rear surface of a material, and heat resistance, the through exposure of the color embodiment layer or the metallic texture layer is enabled when the front surface of the product is looked at, uniform black coating having short process time can be embodied, and mass production is enabled by simplifying an existing complex process.

Description

Automotive parts having a black coating thin film and a black coating method {VEHICLES PARTS WITH BLACK COLOR THIN FILM AND METHOD FOR COATING BLACK COLOR}

The present invention relates to a black color coating technology and automobile parts manufactured thereby, and more particularly, to perform processing by coating treatment on the back surface of a substrate, but to realize excellent performance such as adhesion to a coating film and heat resistance Black color coating that allows for external expression by penetrating the black color or metal texture formed by coating on the back side from the external exposed side (front side) of the substrate based on the visual viewing time It relates to an automobile part having a thin film and a black color coating method.

In general, a grill applied to an internal combustion engine car uses a sporty and dynamic open grill to cool the radiator, which can provide advantages such as improving the vehicle image.

On the other hand, since the electric vehicle is a vehicle driving method using a battery, it has the advantage of less heat generation and less noise, so a grille having a completely closed structure is applied. Accordingly, it is very important to realize various surface textures and high-quality colors (eg, black color series) that can give aesthetic and visual effects at the same time as well as improve the stuffy image of the vehicle.

Recently, in addition to improving the image of a car, it has been used and applied for various purposes through the method of using metal texture expression for aesthetic and visual effects, and for performing auxiliary functions of headlamps, and accordingly, coatings for the realization of metal texture There is a situation where technology is required.

Therefore, in the past, a method of realizing a black color has been widely used. The conventional method of realizing a black color is mainly used, such as arc coating and DLC (Diamond Like Carbon) coating using a hydrocarbon-based gas, but this is a carbon ion It is difficult to realize the same black color on an object with a step or complex shape due to the strong straightness of the substrate, and the resin-based substrate, which is a coating object, has a temperature limitation because the product is deformed due to heat due to a long process time. At the same time, the temperature of the coating film is limited. It is difficult to apply because cracks occur in the thin film as the thickness increases.

In addition, in the conventional black color implementation, a metal texture layer is formed so as not to transmit light in order to improve the color of the metal texture layer, and a black color is realized by using a colored (black) painting or printing method thereon. There is a problem in that the adhesion between the layer and the painted surface is lowered, and an additional process is additionally required. In addition, although a sputtering method using a heterogeneous target is applied as an alternative method for such a problem, it is possible to implement a basic black-based color, but since it is difficult to implement a complete black color, there are limitations and limitations in application.

On the other hand, in the prior art, a black color coating method is disclosed in Korean Patent Registration Nos. 10-0990381 and 10-1252568, but this is a black color coating technology grafted to portable electronic devices that are frequently used in real life. , because it is intended to satisfy mechanical properties such as corrosion resistance, high hardness, and abrasion resistance due to the characteristics of portable electronic devices, there is a particular difference from the technology of the present invention proposed below in the object and scope of application.

In addition, the prior patents, domestic registration patents No. 10-0990381 and No. 10-1252568, have a multi-layer structure (at least two layers) and a long process time due to thickening in order to satisfy mechanical properties, resulting in an increase in the thickness of the coating film An ancillary process for controlling the internal stress of the furnace is required, and there is a problem that it is difficult to apply to mass production because the process time is long.

In addition, in Korean Patent Registration No. 10-0990381, a chromium metal layer, a nitride layer, a carbide layer, and a carbide nitride layer are successively deposited to form a multi-layer structure of at least four layers, and a hydrocarbon-based (C ₂ H _{2 )} , C ₂ H ₆ , CH _4, etc.) to create a chromium carbide layer, or additionally _{introduce a reactive gas (N 2} ) to create a chromium nitride carbide layer to implement black coating, which is a gas ratio Careful process control is required because a color difference may occur depending on the temperature, and since a hydrocarbon-based reactive gas is used, the chamber contamination is severe, and the maintenance period is short, which inevitably lowers mass production efficiency.

In addition, in Korean Patent No. 10-1252568, a method for realizing black color by ionizing hydrocarbon gas using a plasma source to form an amorphous carbon layer (DLC) on a metal texture layer, which is highly polluted in the chamber and carbon particles Particles that fall out of the chamber during the coating process may attach to the substrate, damage the coating film or cause the creation of a completely new material, and require periodic maintenance due to severe contamination of the plasma source, and implement black color Due to the long process time for the process, it may cause deformation of the polymer substrate due to heat, and it is difficult to realize the same black color for products with steps, and since black color is realized only when deposited to a minimum level of 1 μm, internal stress due to increase in film thickness This accumulation may cause cracks after deposition, so it is necessary to introduce an additional process for stress control.

Republic of Korea Patent Publication No. 10-0990381 Republic of Korea Patent Publication No. 10-1252568

The present invention has been devised in consideration of and solving the above-described problems of the prior art, and is coated on the back side of the substrate to prevent protection and damage, but to implement excellent performance such as adhesion to the coating film and heat resistance, and reliability. An object of the present invention is to provide an automobile part and a black color coating method having a black color coating thin film to secure the

The present invention relates to automotive parts and black color coatings having a black color coating thin film that can be expressed externally by penetrating the black color or metal texture coated on the rear surface from the external exposed surface (front side) of the substrate based on the visual angle. It is an object to provide a coating method.

An object of the present invention is to provide an automobile part having a black color coating thin film and a black color coating method having a short process time and uniform black color coating, which enables mass production by simplification of a complicated process.

Automotive parts having a black coating thin film according to the present invention for achieving the above object is manufactured in various shapes, a plastic substrate made of a light-transmitting material; A color realization layer that is formed by sputtering deposition on the rear surface of the plastic substrate and is formed using a different material target and expresses a black color by a nickel-chromium oxynitride layer; It is formed by sputtering deposition on the color realization layer and is formed using a heterogeneous material target, and a metal texture layer for heat resistance performance is included, and the plastic substrate is polycarbonate (PC), polyamide (PA), polymethyl At least one selected from methacrylate (PMMA), acrylonitrile butadiene styrene (ABS), and styrene-acrylonitrile (SAN), and the heterogeneous material is nickel (Ni)-chromium (Cr) do it with

Here, the back surface of the plastic substrate is formed through a surface modification treatment using a plasma source, and as well as increasing adhesion, a pretreatment layer for vivid color implementation or texture expression; may have a configuration further comprising.

On the other hand, the black color coating method according to the present invention for achieving the above object is provided with a substrate, but sputtering deposition using a mixed gas and a different material target is performed on the rear surface of the substrate to express black color by the oxynitride layer forming a color realization layer; Forming a metal texture layer by performing sputtering deposition using a heterogeneous material target in a state in which an inert gas is introduced on the color realization layer; includes, wherein the substrate is a light-transmitting plastic material, polycarbonate (PC), poly at least one selected from amide (PA), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene (ABS), and styrene-acrylonitrile (SAN), and the mixed gas is nitrous oxide (N ₂ O) gas and argon (Ar) gas are mixed, the inert gas is argon (Ar) gas, and the heterogeneous material is nickel (Ni)-chromium (Cr).

Here, a pretreatment step of surface modification by simultaneously performing surface cleaning and activation using a plasma source and a process gas on the rear surface of the substrate; may be configured to further include.

The automotive parts and black color coating method having the above-described black color coating thin film will have more various embodiments, and more various embodiments will be described in detail below.

According to the present invention, excellent performance such as adhesion and heat resistance to the coating film formed on the surface of the substrate can be realized and reliability can be secured, the process time is short and uniform black color coating can be realized, and compared to the conventional one Simplification of complex processes can provide the usefulness of mass production.

According to the present invention, it can be processed to be exposed to the outside by penetrating the black color or metal texture coated on the back from the externally exposed surface (front) of the substrate (product) based on the visual time, and the coating layer is protected and the utility of preventing damage.

According to the present invention, since black color can be implemented simply compared to the conventional half-metal coating method, process simplification and cost reduction are possible, and production cost can be lowered, and compared to the conventional method, it is possible to prevent deterioration of adhesion with the deposition surface. It can provide usefulness that you can do.

According to the present invention, it is possible to exhibit excellent characteristics of durability and heat resistance against radiant heat of a light source (LED, etc.), so that a coating thin film having a color realization layer is formed and then various textures are expressed through post-processing such as laser cutting, etc. High-quality black color or various color expressions can be performed, and through this, it can be combined with hidden lighting technology to provide the usefulness of manufacturing automobile parts including radiator grille, turn signal, daytime running light, tail lamp, etc. can

According to the present invention, the black color coating method can be applied to the functional color coating of home appliances or various industrial decorative products as well as automobile parts made of plastic materials.

1 is a conceptual diagram illustrating an automobile part having a black coating thin film according to an embodiment of the present invention.
2 is a conceptual diagram illustrating a part for an automobile having a black coating thin film according to another embodiment of the present invention.
FIG. 3 is a multi-layered configuration diagram illustrating an automobile part having a black coating thin film of FIG. 1 .
FIG. 4 is a multi-layered configuration diagram showing an automobile part having a black coating thin film of FIG. 1 .
5 is a process flowchart illustrating the black color coating method of FIG. 1 .
6 is a process flowchart illustrating the black color coating method of FIG. 2 .
7 is a photograph showing a black color implementation state of FIG. 1 .
8 is a photograph showing a black color implementation state of FIG. 2 .

Preferred embodiments of the present invention will be described with reference to the accompanying drawings, and the purpose and configuration of the present invention and its features will be better understood through such detailed description.

As shown in FIGS. 1 and 3, the automotive component 100 having a black coating thin film according to an embodiment of the present invention includes a plastic substrate 110, a pretreatment layer 120, a color realization layer 130, and It consists of a structure including the metal texture layer (140).

Sometimes, as shown in FIGS. 2 and 4, by changing the coating order to be made of a configuration including the plastic substrate 110a, the pretreatment layer 120a, the metal texture layer 130a, and the color realization layer 140a may be

Here, the pretreatment layers 120 and 120a may be omitted if necessary.

The plastic substrates 110 and 110a may be manufactured in various shapes through molding such as extrusion or injection using a plastic material.

As the plastic substrates 110 and 110a, engineering plastics or general-purpose plastics may be used.

In detail, the plastic substrates 110 and 110a are polycarbonate (PC), polyamide (PA), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene (ABS), which are materials having light transmittance, At least one selected from ene-acrylonitrile (SAN) may be used.

The pretreatment layers 120 and 120a are formed through a surface modification treatment using a plasma source on the back side of the plastic substrates 110 and 110a, and include the color realization layers 130 and 140a and the metal texture layer 140. ) (130a) serves to increase the adhesion to the color realization layer (130) (140a) side, as well as to implement a vivid color.

The color realization layers 130 and 140a are formed by sputtering deposition on the pretreatment layer 120 or the metal texture layer 130a, and are formed using a heterogeneous material target, and are formed by a nickel-chromium oxynitride layer. It is formed to express color.

The color realization layer 130 may be directly formed on the rear surface of the plastic substrate 110 without a pretreatment layer.

Even at this time, it is preferable to use a nickel (Ni)-chromium (Cr) material as the heterogeneous material.

Here, the heterogeneous material may be used in a weight ratio of 6:4, 7:3, or 8:2 to nickel and chromium.

The color realization layers 130 and 140a are preferably formed to a thickness of 80 to 100 nm.

The metal texture layers 140 and 130a are formed by sputtering deposition on the rear surfaces of the plastic substrates 110 and 110a and are formed using a heterogeneous material target, and are formed to satisfy heat resistance performance.

The heterogeneous material is preferably a nickel (Ni)-chromium (Cr) material.

The heterogeneous material may be used in a weight ratio of 6:4, 7:3, or 8:2 compared to nickel and chromium.

The metal texture layer 140 is formed on the color realization layer 130 , and the metal texture layer 130a is formed on the pretreatment layer 120a .

The metal texture layer 130a may be directly formed on the rear surface of the plastic substrate 110 without a pretreatment layer.

The metal texture layers 140 and 130a are preferably formed to a thickness of 80 to 120 nm.

The automotive part 100 having such a multi-layered structure transmits the black color or metal texture coated on the back surface from the external exposed surface (front surface) of the substrate (product) based on the visual visual time to express the outside. It can be treated so as to provide an advantage of protecting and preventing damage to the coating layer, and in particular, it can be usefully applied to any one group selected from a turn signal, a radiator grille, a tail lamp, and a daytime running light.

On the other hand, the automotive component 100 having a black color coating thin film by the above-described multi-layer structure can be made through the black color coating method described below.

As shown in FIG. 5, the black color coating method according to the present invention may include a pretreatment step (S100), a color realization layer forming step (S200), and a metal texture layer forming step (S300).

Sometimes, as shown in FIG. 6 , it may be configured to include the steps of a pretreatment step ( S100 ), a metal texture layer forming step ( S200 ), and a color realization layer forming step ( S300 ).

Here, the pretreatment step (S100) may not be performed, but it may be more preferable to perform it for adhesion and excellent performance.

In detail, the pretreatment step (S100) is a pretreatment step by simultaneously performing surface cleaning and activation using a plasma source and a process gas on the back surface of the substrate.

The base material is a plastic material, and in particular, a material having light-transmitting properties is preferable.

The base material is at least one selected from polycarbonate (PC), polyamide (PA), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene (ABS), and styrene-acrylonitrile (SAN). can be used

In the pretreatment step (S100), the substrate is put into the vacuum chamber and fixed to the rotary holder, but ^{after high vacuum exhaust to 5.0E -5} Torr, argon (Ar) and nitrous oxide (N ₂ O) are mixed gas mixed However, the N ₂ O/Ar+N ₂ 0 ratio is adjusted to 82% and the gas partial pressure is maintained at 2 to 3 mtorr, and a surface modification treatment is performed with a plasma source at an applied voltage of 1000 V to 1100 V for 3 to 5 minutes.

At this time, it is preferable to control the rotation at 1 to 5 times/min for the rotary holder.

Here, for the uniform surface treatment of the substrate, which is the object to be coated, the rotary holder may selectively apply a revolving or revolving method.

The color realization layer forming step (S200) is a step of forming a color realization layer expressing a black color by an oxynitride layer by performing sputtering deposition using a mixed gas and a heterogeneous material target on the back surface of the substrate or the pretreatment layer.

In addition, the color realization layer forming step (S300) as shown in FIG. 6 is a step of forming on the metal texture layer to provide a color realization layer on the final rear surface of the product, and is performed in the same manner.

The mixed gas is preferably a mixture of nitrous oxide (N ₂ O) gas and argon (Ar) gas.

The heterogeneous material is preferably a nickel (Ni)-chromium (Cr) material.

In the color realization layer forming step (S200) (S300), a mixed gas mixed with _{argon (Ar) and nitrous oxide (N 2} O) is introduced in a state in which the substrate is put into the vacuum chamber, _{but N 2} O/Ar+N ₂ 0 ratio is adjusted to 60% and gas partial pressure is maintained at 1 to 3 mtorr, and direct current sputtering is performed using a nickel-chromium heterogeneous target having a weight ratio of 6:4, 7:3, or 8:2, Deposited to a thickness of 80 to 100 nm.

Even at this time, it is preferable to control the rotation at 10 to 20 times/min while the substrate is fixed on the rotary holder for uniform coating.

The metal texture layer forming step ( S300 ) is a step of forming a metal texture layer by performing sputtering deposition using a heterogeneous material target in a state in which an inert gas is introduced on the color realization layer.

In addition, the metal texture layer forming step (S200) as shown in FIG. 6 is formed on the back surface of the substrate or the pretreatment layer, and is performed in the same manner.

The inert gas is argon (Ar) gas.

The heterogeneous material is preferably a nickel (Ni)-chromium (Cr) material.

In the metal texture layer forming step (S300) (S200), 50 to 150 sccm of an inert gas is introduced in a state in which the substrate is put into the vacuum chamber, and 1 to 3 mtorr is maintained for the gas partial pressure, 6:4 or 7:3 or 8 DC sputtering is performed using a heterogeneous material target made of nickel-chromium having a weight ratio of :2, but deposited to a thickness of 80 to 120 nm.

At this time, it is preferable to control the rotation at 10 to 20 times/min while the substrate is fixed on the rotary holder for uniform coating.

7 and 8 are photographs for helping understanding according to an embodiment of the present invention, in which a black color is realized by an oxynitride layer on the back surface of a plastic material using the black color coating method comprising the above-described process. is a picture showing

7 is a photograph of the black color coating completed using the process sequence of FIG. 5, and the black color formed by coating on the back surface from the external exposure surface (front surface) of the substrate (product) based on the visual point of view is externally expressed This is a picture of the product showing the condition of the product.

FIG. 8 is a photograph of the black color coating completed using the process sequence of FIG. 6 , and the metal texture formed by coating on the back surface from the external exposure surface (front surface) of the substrate (product) based on the visual viewing time is externally expressed; FIG. This is a product photo showing the state in which the black color is realized on the outermost back side of the substrate.

Meanwhile, the black color coating method will be described in more detail below with reference to more specific examples.

Here, a base material (automobile parts) made of a plastic material (polycarbonate) was used and a black color coating process was performed on the back surface.

In the embodiment, a substrate, which is an object to be coated, is put in a vacuum chamber, fixed to a rotary holder, ^{evacuated to a high vacuum (5.0E -5} Torr), and at the same time, the substrate is heated, and the temperature of the substrate is kept constant. The holder was rotated at a constant speed, and after the deposition was completed, all gases were cut off, and the substrate was recovered after the vacuum chamber was vented.

In addition, a direct current discharge excitation method was used as an excitation means for plasma and ionization composition for the coating material and a method thereof, and in particular, an inert gas (Ar) and a reactive gas (N ₂ O), a black color satisfying reliability (coating film adhesion and heat resistance performance) was realized by using reactive sputtering according to the ratio.

(pre-processing step)

The base material can realize a black color that satisfies reliability (coating film adhesion, heat resistance performance) even by depositing a color realization layer having a black color on the metal texture layer without a pretreatment process. It is preferable to strengthen the chemical bonding force with the implementation layer or the metal texture layer and apply it to implement a clearer color implementation layer or metal texture layer.

In the pre-treatment step, the substrate is charged in a vacuum chamber and fixed on the rotary holder, high vacuum evacuation is performed up to a high vacuum (5.0E-5 Torr), and at the same time, the substrate is heated and the substrate is coated and the temperature of the substrate is kept constant. While rotating at a constant speed, _{inject a mixed gas of N 2} O/Ar+N ₂ 0, but adjust the ratio to 82%, and plasma source for 3 to 5 minutes at a gas partial pressure of 2 to 3 mtorr and an applied voltage of 1000 V to 1100 V was subjected to surface modification treatment.

At this time, the substrate was rotated once/min by rotating the holder for uniform surface treatment.

Here, by applying the mixed gas, the color of the color realization layer expressing the black color during the pretreatment process using only the inert gas (Ar) was prevented from fading.

Here, when the pre-treatment time is shorter than 3 minutes, the color becomes pale when realizing the black color, so that a vivid black color cannot be obtained, and when it exceeds 5 minutes, the black color is no longer clear and there is little change. It only increases the processing time, and has no meaning any more.

(Metal texture layer formation step)

In order to realize a metal texture layer that satisfies the heat resistance reliability of automotive parts, a metal texture layer satisfying heat resistance reliability was formed using a heterogeneous material (Ni-Cr) target with excellent thermal stability at high temperatures.

As a result of checking the presence or absence of cracks on the thin film surface according to the applied material (Cr vs Ni-Cr) when implementing the metal texture layer, the metal texture layer by Ni-Cr did not have cracks on the thin film surface even after deposition, but the metal texture by Cr After deposition, cracks occurred throughout the thin film due to severe internal stress on the surface of the thin film. Accordingly, it was confirmed that the Ni-Cr material was most suitable for the metal texture layer of automotive parts that satisfies the heat resistance performance, and this was applied.

In the metal texture layer forming step, 100 sccm of inert gas (Ar) is introduced into the vacuum chamber, and the gas partial pressure 1 is performed by direct current sputtering using Ni-Cr material while rotating the rotary holder at 15 times/min for uniform coating. A metal texture layer was formed by a non-permeable thin film at ~3 mtorr.

Here, the Ni-Cr material may be used in a weight ratio of 6:4, 7:3, or 8:2 to nickel and chromium.

Here, by depositing the metal texture layer to a thickness of 80 to 120 nm, the coating film adhesion is excellent and the heat resistance performance is satisfied, and more preferably, deposition at 100 nm or more can increase the performance.

Table 1 below shows the surface and cross-section of the metal texture layer formed by this method, and shows the state in which there is no crack on the surface of the coating film.

(color realization layer formation stage)

In the color realization layer forming step, a method of realizing black color by forming an oxynitride layer by nickel chromium on the rear surface of the substrate using a Ni-Cr material having no cracks on the surface of the coating film and excellent thermal stability at high temperature was applied.

In the color realization layer formation step, a mixed gas (Ar/N ₂ 0) is introduced into _{the vacuum chamber, the N 2} O/Ar+N ₂ 0 ratio is adjusted to 60%, and the coating is performed while maintaining the gas partial pressure at 1 to 3 mtorr. A black color was realized by depositing an oxynitride layer using a material (Ni-Cr) using a DC sputtering method.

Here, the Ni-Cr material may be used in a weight ratio of 6:4, 7:3, or 8:2 to nickel and chromium.

Here, the color realization layer may be deposited to a thickness of 80 to 100 nm.

Here, the rotation speed and process temperature of the substrate were carried out under the same conditions as in the metal texture layer formation step, and the sputtered nickel chromium particles were combined with ionized oxygen and nitrogen cations to form oxynitride with strong chemical bonding force at the interface. At this time, it is attached to the substrate in a form containing a nickel-chromium compound and a trace amount of nickel-chromium, and the attached particles increase the mobility of the particles under the influence of temperature to support the rapid cluster formation of the thin film, and relieve internal stress. There is no crack even after deposition, and fine voids exist at the grain boundaries so that heat dissipation is also smooth, so a black coating that satisfies heat resistance reliability can be performed.

Table 2 below shows the black color by forming a nickel chromium nitride layer using a _{reactive gas (N 2} ). The results of testing the black color implementation according to the increase in the ratio of _{N 2} /Ar+N ₂ gas are shown in Table 2 below. It shows that it is difficult to form a non-permeable thin film and does not satisfy reliability (coating film attachment, heat resistance performance), so it is difficult to apply as a black-based color realization layer for automobile parts.

In addition, black color can be realized when a single thin film layer is applied by reactive sputtering using a _{mixed gas (Ar/N 2} O) without a metal texture layer on the back surface of the substrate, which is the coating object, but as shown in Table 3 below, Since it is difficult to form a thin film, it is preferable to apply it in a multilayer thin film structure.

Table 3 below shows the results of evaluating the color change according to the process gas ratio and the formation of a non-permeable thin film by composing a single black coating thin film layer without a metal texture layer. The N ₂ O/Ar+N ₂ 0 ratio is 60% Reliability was not satisfied when it was less than or exceeded, and black color was not implemented.

However, when the N ₂ O/Ar+N ₂ 0 ratio was adjusted to 60%, a black color that satisfies reliability (coating film adhesion and heat resistance performance) was realized, but in order to form a non-transmissive black coating layer, a single A thin film in a non-permeable state was not formed only with the pure black coating layer.

Table 3 shows that it is possible to realize black-based colors that satisfy reliability, but a thin film in a non-transmissive state was not formed with only a single layer.

Table 4 below shows whether a completely black color in a non-permeable state can be realized as the coating film thickness increases after fixing the ratio of the _{process gas (N 2} O/Ar+N ₂ O) that can realize the black series that satisfies the reliability to 60%. was evaluated, and as a result, complete black was realized that satisfies reliability (coating film adhesion and heat resistance performance) as the film thickness increased. However, even when the coating film thickness was increased, a non-permeable thin film was not formed with only a single black coating layer.

That is, in order to perfectly realize the black coating color that satisfies the coating film adhesion and heat resistance reliability on the surface of the object to be coated, as in the present invention, a metal texture layer satisfying heat resistance reliability and a nickel chromium oxynitride layer for realization of black color It shows that a multilayer thin film structure using

Furthermore, the black-coated thin film can be post-processed and combined with a light source (LED, etc.) module to express aesthetic and visual effects and to process various textures.

In Table 5 below, a reactive gas (N ₂ O/Ar+N _{2 O) using nitrous oxide (N 2} O) gas was fixed at a ratio of 60% on the metal texture layer and sputtered to form a nickel-chromium oxynitride layer, Examples of implementing various colors are shown.

That is, it will be said that the present invention can be applied to functional color coatings of home appliances or various industrial decorative products, including automotive parts made of plastic materials through application and application.

Accordingly, through the present invention, excellent performance such as adhesion and heat resistance to the coating film formed on the surface of the substrate can be realized, reliability can be secured, and the process time is short and uniform black color coating can be realized. It can provide the advantage of mass production by simplification of complex processes compared to the existing ones.

In particular, in the case of automotive parts, it can be applied to various places such as a radiator grille, a daytime running light, a tail lamp, and a turn signal, and can provide the advantage of lowering the production cost while providing excellent quality.

The embodiments described above are merely illustrative of preferred embodiments of the present invention and are not limited to these embodiments, and various modifications and variations or modifications by those skilled in the art within the technical spirit and claims of the present invention It will be said that the substitution of steps may be made, and this will be said to be within the scope of the technical rights of the present invention.

100: automotive parts
110: substrate
120: pretreatment layer
130: color realization layer
140: metal texture layer

Claims (10)

a plastic substrate made of various shapes and made of a light-transmitting material;
A color realization layer that is formed by sputtering deposition on the rear surface of the plastic substrate and is formed using a different material target and expresses a black color by a nickel-chromium oxynitride layer;
As formed by sputtering deposition on the color realization layer and formed using a heterogeneous material target, a metal texture layer for heat resistance performance; includes,
The plastic substrate is at least one selected from polycarbonate (PC), polyamide (PA), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene (ABS), and styrene-acrylonitrile (SAN). ego,
The heterogeneous material is nickel (Ni)-chromium (Cr),
The color realization layer introduces a mixed gas _{of argon (Ar) and nitrous oxide (N 2} O) in a state in which the plastic substrate is put into the vacuum chamber, _{but the N 2} O/Ar+N ₂ 0 ratio is 60%. Adjustment and gas partial pressure are maintained at 1 to 3 mtorr, and DC sputtering is performed using a nickel-chromium heterogeneous material target having a weight ratio of 6:4, 7:3, or 8:2, but deposited to a thickness of 80 to 100 nm and, for uniform coating, a part for automobiles having a black color coating thin film, characterized in that it is formed under conditions of rotation control at 10 to 20 times/min in a state in which a plastic substrate is fixed on a rotary holder. a plastic substrate made of various shapes and made of a light-transmitting material;
Formed by sputtering deposition on the rear surface of the plastic substrate and formed using a heterogeneous material target, a metal texture layer for heat resistance performance;
a color realization layer formed by sputtering deposition on the metal texture layer and formed using a heterogeneous material target to express a black color by a nickel-chromium oxynitride layer; includes,
The plastic substrate is at least one selected from polycarbonate (PC), polyamide (PA), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene (ABS), and styrene-acrylonitrile (SAN). ego,
The heterogeneous material is nickel (Ni)-chromium (Cr),
The color realization layer introduces a mixed gas _{of argon (Ar) and nitrous oxide (N 2} O) in a state in which the plastic substrate is put into the vacuum chamber, _{but the N 2} O/Ar+N ₂ 0 ratio is 60%. Adjustment and gas partial pressure are maintained at 1 to 3 mtorr, and DC sputtering is performed using a nickel-chromium heterogeneous material target having a weight ratio of 6:4, 7:3, or 8:2, but deposited to a thickness of 80 to 100 nm and, for uniform coating, a part for automobiles having a black color coating thin film, characterized in that it is formed under conditions of rotation control at 10 to 20 times/min in a state in which a plastic substrate is fixed on a rotary holder. 3. The method of claim 1 or 2,
A pretreatment layer formed on the rear surface of the plastic substrate through a surface modification treatment using a plasma source to enhance adhesion and to implement a vivid color or texture; further comprising,
In the pretreatment layer, the plastic substrate is put in a vacuum chamber and fixed to a rotary holder, ^{and after high vacuum exhaust to 5.0E -5} Torr, a mixed gas of argon (Ar) and nitrous oxide (N ₂ O) is used. However, the N ₂ O/Ar+N ₂ 0 ratio is adjusted to 82%, the gas partial pressure is maintained at 2 to 3 mtorr, and the surface modification treatment is performed with a plasma source at an applied voltage of 1000 V to 1100 V for 3 to 5 minutes. An automobile part having a black color coating thin film, characterized in that it is formed under the condition of controlling rotation at 1 to 5 times/min with respect to the holder. 3. The method of claim 1 or 2,
The automotive parts are
Automotive parts having a black color coating thin film, characterized in that it is any one of a turn signal, a radiator grille, a tail lamp, and a daytime running light. A method comprising: providing a substrate, performing sputtering deposition using a mixed gas and a target of a different material on the rear surface of the substrate to form a color realization layer expressing a black color by an oxynitride layer;
forming a metal texture layer by performing sputtering deposition using a heterogeneous material target in a state in which an inert gas is introduced on the color realization layer; includes,
The substrate is a light-transmitting plastic material, polycarbonate (PC), polyamide (PA), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene (ABS), styrene-acrylonitrile (SAN) It is at least one or more selected from
The mixed gas is a mixture of nitrous oxide (N ₂ O) gas and argon (Ar) gas,
The inert gas is argon (Ar) gas,
The heterogeneous material is nickel (Ni)-chromium (Cr),
In the step of forming the color realization layer, a mixed gas mixed with _{argon (Ar) and nitrous oxide (N 2} O) is introduced in a state in which the substrate is put in a vacuum chamber, _{but the N 2} O/Ar+N ₂ 0 ratio is Adjusted to 60% and maintaining the gas partial pressure at 1 to 3 mtorr, and performing DC sputtering using a nickel-chromium heterogeneous target having a weight ratio of 6:4, 7:3, or 8:2, but 80 to 100 nm A black color coating method, characterized in that the deposition is made to a thickness and rotation is controlled at 10 to 20 times/min while the substrate is fixed on a rotary holder for uniform coating. A step of forming a metal texture layer by performing sputtering deposition using a target of a different material in a state in which an inert gas is introduced on the back surface of the substrate;
performing sputtering deposition using a mixed gas and a target of a different material on the metal texture layer to form a color realization layer expressing black color by the oxynitride layer; includes,
The substrate is a light-transmitting plastic material, polycarbonate (PC), polyamide (PA), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene (ABS), styrene-acrylonitrile (SAN) It is at least one or more selected from
The inert gas is argon (Ar) gas,
The mixed gas is a mixture of nitrous oxide (N ₂ O) gas and argon (Ar) gas,
The heterogeneous material is nickel (Ni)-chromium (Cr),
The step of forming the color realization layer,
A mixed gas _{of argon (Ar) and nitrous oxide (N 2} O) was introduced in a state in which the substrate was put into the vacuum chamber, _{but the N 2} O/Ar+N ₂ 0 ratio was adjusted to 60% and the gas partial pressure was adjusted to 1 to Maintaining at 3 mtorr and performing DC sputtering using a nickel-chromium heterogeneous material target having a weight ratio of 6:4, 7:3, or 8:2, depositing to a thickness of 80 to 100 nm, for uniform coating A black color coating method, characterized in that the rotation is controlled at 10 to 20 times/min while the substrate is fixed on a rotary holder. 7. The method of claim 5 or 6,
A pretreatment step of surface-modifying the rear surface of the substrate by simultaneously cleaning and activating the surface using a plasma source and a process gas; further comprising,
The pre-processing step is
The substrate is put in the vacuum chamber and fixed in the rotary holder, ^{and after high vacuum exhaust to 5.0E -5} Torr, a mixed gas of argon (Ar) and nitrous oxide (N ₂ O) is introduced, but N ₂ O/ Adjust the Ar+N ₂ 0 ratio to 82% and maintain the gas partial pressure at 2 to 3 mtorr, perform surface modification treatment with a plasma source at an applied voltage of 1000 V to 1100 V for 3 to 5 minutes, and 1 to 5 for a rotary holder A black color coating method, characterized in that rotation is controlled at times/min. delete 7. The method of claim 5 or 6,
The step of forming the metal texture layer,
In a state in which the substrate is put into the vacuum chamber, 50 to 150 sccm of an inert gas is introduced and 1 to 3 mtorr is maintained for the gas partial pressure, and a nickel-chromium heterogeneous material having a weight ratio of 6:4, 7:3, or 8:2 Black color coating method, characterized in that DC sputtering is performed using a target, deposited to a thickness of 80 to 120 nm, and rotation is controlled at 10 to 20 times/min while the substrate is fixed on a rotary holder for uniform coating . delete

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