JPS6353299A - Ornamental plated layer - Google Patents

Abstract

PURPOSE:To obtain an ornamental plated layer having luster in a light place and luminescence in a dark place by forming a composite plated layer contg. deposited light accumulating fine particles on the surface of a blank to be plated. CONSTITUTION:A plated bright Ni layer 2 is formed on the surface of a blank 1 to be plated and simultaneously light accumulating fine particles 3 are deposited in the layer 2. An ornamental plated Cr layer 4 is then formed on the layer 2. The particles 3 are made of ZnS/Cu, ZnCdS/Cu, CaSrS/Bi or CaS/Bi as a light accumulating pigment. Thus, an ornamental plated layer having a fine ornamental surface is obtd. The surface of the metal plating has luster in a light place and the light accumulating fine particles 3 luminesce in a dark place by rays of light absorbed and accumulated in the particles.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a decorative plating layer having gloss in bright places and luminescence in dark places.

b. Prior Art The following types of decorative plating are generally known.

(2) Bright nickel plating + decorative chrome plating (i) - Heavy nickel plating (FIG. 6(a)) A bright nickel plating N101 is formed on the surface of the plated material 100, and a decorative chrome plating layer 102 is formed thereon.

(11) Double nickel plating (FIG. 6(b)) A semi-bright nickel plating bath 103 is formed on the surface of the plated material 100, and a bright nickel plating layer 101 is formed thereon,
Furthermore, a decorative chrome plating layer 102 is formed thereon.

(iii) Triple nickel plating (Fig. 6 (C)) Semi-bright nickel plating 1151 on the surface of the plated material 100
A bright nickel coating 711!1104 having a high sulfur content is formed thereon, and then a bright nickel plating layer 101 and a decorative chrome plating layer 102 are formed.

In all of the above (i), 1), and (iii), the bright nickel plating 1101 has corrosion resistance and gloss as its main purpose, and the decorative chrome plating N1o2 has good corrosion resistance and its main purpose is to prevent discoloration. The color of the decorative plating surface is silvery white.

■ Various alloy plating (FIG. 7) An alloy plating layer 105 is formed on the surface of the material 100 to be plated, and a clear coating film 106 is formed thereon.

(a) Cu-3n-Znn alloy plating Cuclear coating film C
The u5n-Zn alloy plating film exhibits a color between yellow and gold by adjusting the pH of the plating bath. The clear coating acts as a corrosion-resistant protective layer for the underlying alloy plating coating.

(b) 5n-Ni alloy brush + clear coating n-N
The i-alloy plating film has a black color.

In this case, the clear coating contributes more to improving surface gloss than corrosion resistance.

These decorative plating coatings, for example, Cu-5n-Zn
Even in the case of an n-alloy plated clear coating, the color tone of the plated film can be changed from yellow to gold by changing the Pl+ of the plating bath, but the color obtained is any color within the same range, and only a single color can be obtained. It is one color tone.

C1 Problems to be Solved by the Invention Such a decorative plating film is a plating film characterized by being glossy and having a certain color tone.
It can only exhibit a single color tone.

On the other hand, in the dispersion plating method in which a dispersion material such as silicon carbide (SiC) is eutectoid on the plating surface, the SiC particles are opaque and exhibit a blackish-gray color, so the bright nickel coating used as the matrix is not the same as that of this plating coating. The silvery white color is dominated by SiC particles, resulting in a gray plating appearance with reduced gloss.

The present invention aims to solve the above-mentioned problems and provide a decorative plating layer that has gloss in bright places and luminescence in dark places, and can obtain a plurality of color tones or decorative effects. .

d. Means for Solving the Problems The present invention suspends phosphorescent fine particles in a conventionally used decorative plating bath, eutectoids the phosphorescent fine particles onto a metal surface used as a matrix, and coats the metal surface to be plated. The purpose is to form a decorative dispersion plating film on the surface of the material.

e. Detailed Description of the Invention In the present invention, as a decorative plating bath, a nickel plating bath,
Decorative chrome plating bath, gold plating bath, gold-silver alloy plating bath, gold-copper alloy plating bath, gold-nickel alloy plating bath, silver plating bath, copper-zinc alloy plating bath, VI4-cadmium alloy plating bath, copper-tin An alloy plating bath, a copper-tin-zinc alloy plating bath, a tin-nickel alloy plating bath, etc. are used.

However, when suspending luminescent fine particles in a plating bath,
Considering the properties of the plating bath, management conditions, etc., it is easiest to apply a nickel plating bath.

Inorganic phosphorescent fine particles are generally referred to as phosphorescent pigments, and have the property of absorbing and accumulating light from the sun or an electric lamp, and gradually releasing it to emit light.1. It is a substance that can repeat absorption-accumulation-emission many times.

Table 1 shows an example of luminescent fine particles, and in the present invention, luminescent fine particles of any composition can be used as long as they have luminous properties and are insoluble in the plating solution.

Table 1 As the luminescent fine particles, for example, ZnS/Cu luminescent pigment is used, and as the plating bath, a nickel plating bath is used. The Ni-ZnS/Cu decorative dispersed nickel plating film thus obtained exhibits a silvery white luster on bright nickel plated members.

Moreover, the ZnS/
Since the Cu-based phosphorescent fine particles have transparency, they act as if the phosphorescent fine particles 3 were removed as shown in FIG.
The brightness of the bright nickel plating layer remains unchanged.

The Ni-ZnS/Cu decorative dispersed nickel plating film according to the present invention has phosphorescent fine particles such as ZnS/Cu well dispersed and co-deposited in the mebuki film, so it absorbs and accumulates light from the sun or electric lamp. It has a function of emitting light by gradually releasing this. For example, an article coated with a Ni-ZnS/Cu decorative dispersed nickel plating coating according to the present invention can be used even if the lights are turned off at night.
By emitting light for a while due to afterglow, a film with a new function of light emission is formed. Furthermore, the color tone is silvery white and the glossiness is not affected.

(Constitution of Plated Layer Li) Figure 1 (fat or phantom) shows the configuration of the plating layer carried out in a nickel plating bath.

Fig. 1 fal is a model in which luminous fine particles are eutectoided on a heavy nickel plating layer.This means that a bright nickel plating N2 is formed on the surface of the plated material 1, and this bright nickel plating layer 2 has luminous properties. Co-deposit fine particles onto the bright nickel plating layer 2! A decorative black chrome plating layer 4 is formed.

Figure 1 (b+) is a double-layered layer of -heavy nickel plating with phosphorescent fine particles eutectoided on the upper layer. The phosphorescent fine particles 3 are eutectoided on the upper Iti2', and a decorative chrome plating layer 4 is formed on the bright nickel plating layer 2'.

Figure 1 (C1 is a two-layered layer of - heavy nickel plating with luminescent fine particles eutectoided in the lower layer. This is a two-layered layer of bright nickel plating 2 on the surface of the material to be plated. The phosphorescent fine particles 3 are eutectoided on the lower WJ 2', and a bright nickel plating layer 2' and a decorative chrome coating N4 are formed thereon.

Figure 1 +d+ is a double nickel plating layer in which luminous fine particles are eutectoided to the bright nickel plating layer, and this is a semi-bright nickel plating layer 5 on the surface of the plated material 1.
A bright nickel plating layer 2 is formed thereon, luminescent fine particles 3 are eutectoided thereon, and a decorative chrome plating layer 4 is further formed.

FIG. 1 (61 is a double nickel plating layer in which phosphorescent fine particles are eutectoided to the lower semi-bright nickel plating layer).

Figure 1 () shows a triple nickel plating layer in which luminous fine particles are eutectoided to the upper bright nickel plating layer. A bright nickel plating N6 having a high sulfur content is formed thereon, and then a bright nickel plating layer 2 is formed, luminescent fine particles 3 are eutectoided, and a decorative chrome plating layer 4 is further applied.

Figure 1 (The illusion is that the lower semi-bright nickel plating layer 5 of the triple nickel plating layer in Figure 1ffl has luminescent fine particles 3.
is eutectoid.

Figure 2 shows the effect of the luminescent fine particles 3 eutectoided on the bright nickel plating layer 2. Since the luminescent fine particles are transparent, the glossiness is comparable to the state in which the luminescent fine particles are removed. does not change.

In addition, Fig. 3 (al (b) (cl) shows the case where alloy plating is used as the matrix, and Fig. 3 fal shows the case in which luminescent fine particles 3 are eutectoided on -heavy alloy plating N1. Clear!:l!2B is applied on the top.In Figure 3), the alloy plating layer 7 in Figure 3 (δ) is made into two layers, and the luminous fine particles 3 are eutectoided on the upper layer 7'. Furthermore, FIG. 3 (CI) is the one in which the aluminum alloy plating layer 7 in FIG.

In addition, FIG. 4 [al (bl (cl) is an example in which a transparent coating film is applied to a Ni-phosphorescent fine particle luster-dispersed nickel brush layer or the like.

FIG. 4 (Al is a double nickel plating layer in which luminous fine particles are eutectoided to the upper bright nickel plating layer and a colorless transparent coating film is applied thereon.

This involves forming a semi-bright nickel plating layer 5 on the surface of the material 1 to be plated, forming a bright nickel-plated layer 5 on the semi-bright nickel plating layer 5, eutectoidizing the phosphorescent fine particles 3 thereon, and further A colorless transparent electrodeposition coating film 9 is applied thereon.

In FIG. 4), a decorative chromium plating stone 4 is applied on the bright nickel plating layer 2 of FIG. 4 +al, and then a colorless transparent electrodeposition coating 9 is applied.

FIG. 4 (CI is a sample in which a colored transparent electrodeposited coating 9' is applied instead of the colorless transparent electrodeposition coating 9 of FIG. 4 ta+).

f. Example The plating bath composition was within the following range, and the luminescent particles were ZnS/Cu based luminescent particles.

In the experiment, the standard plating bath composition was used, and the dispersion material Zn
S/Cu-based phosphorescent fine particles were added to a plating bath at a ratio of 100 g/I-, and sufficiently suspended by air stirring.

In this bright nickel plating bath in which phosphorescent fine particles were suspended, the following materials to be plated were plated.

■ Ignition switch for four-wheeled vehicles (key insertion surface) double ■ Door lock knob (see Figure 5): Ni obtained from iron
- The eutectoid amount of luminescent fine particles on the bright nickel plated surface of the luminescent fine particle decorative dispersed nickel plating film is approximately 3 in terms of area ratio.
It was 0%.

Both samples of this Ni-phosphorescent fine particle decorative dispersed nickel plating film were almost not inferior in performance to the conventional bright nickel plating film in terms of gloss.

On the other hand, the decorative plating layer according to the present invention has the property that luminous fine particles exposed and scattered on the plating surface and eutectoid absorb and accumulate light, and gradually release the light to emit light. Moreover, since absorption-accumulation-emission cycle is repeated, it also functions as a luminescent coating, and each sample can be used in the following ways.

■ Key insertion surface of ignition switch for four-wheeled vehicle i) The keyway was sealed and Ni-75 optical fine particle dispersed nickel plating was applied only to the key insertion surface of the ignition switch.

ii) This prototype was installed on a four-wheel vehicle on a four-wheel vehicle production line.

In four-wheeled vehicles, it is often difficult to know where the ignition switch key slot is, especially at night when the interior is dark.

The key insertion surface of the ignition switch with decorative plating according to the present invention absorbs and accumulates light as soon as the driver opens the door and the interior lights turn on. The key insertion surface of the Igni emits light, making it possible to clearly identify its position.

Inserting the John key has become extremely easy.

■ Door lock knob A lock knob on the indoor side of a door handle was coated with Ni-phosphorescent fine particle-dispersed Nifkelmefki according to the present invention, and was assembled to the door handle and then attached to the door.

When leaving a room at night, after turning off the interior lights, people often get confused about where the door handle is when they try to leave.

However, the door handle lock knob with the plating layer according to the present invention absorbs and accumulates enough light while the room is lit, so it continues to emit light for a while after the interior lights are turned off. As a result, the locking knob and even the door handle are positioned at 1, making opening and closing the door and exiting extremely smooth.

g. Effects of the Invention As described above, according to the decorative plating layer of the present invention, a composite plating layer containing phosphorescent fine particles as the eutectoid material is formed on the surface of the material to be plated, so that the metal plating surface does not appear in bright places. exhibits glossiness, and emits light in the dark due to the light absorbed and accumulated by the phosphorescent fine particles, forming a good decorative surface.

Although the above embodiments have been described using electrolytic plating, it goes without saying that similar effects can be obtained using electroless plating.

[Brief explanation of drawings]

FIG. 1 (δ) to gl is a conceptual cross-sectional view showing the configuration of the decorative plating layer in the present invention, FIG. 2 is a conceptual cross-sectional view showing the effect of luminescent fine particles, and FIG.
C1 is a conceptual cross-sectional view showing a decorative plating layer when alloy plating is used as a matrix;
(C1 is a conceptual sectional view showing the configuration of a decorative plating layer in which a colorless or colored transparent electrodeposited coating is applied to a Ni-phosphorescent fine particle dispersed nickel plating layer, and FIG. 5 is a perspective view showing a door knob. FIG. 6+al(1))(C) and FIG. 7 are conceptual cross-sectional views showing a conventional decorative plating layer. 1... Material to be plated, 2... Bright nickel plating layer, 3... Luminescent fine particles, 4... Decorative chrome plating layer, 6... Bright nickel plating layer with high sulfur content, 7
．． 7'... Alloy plating layer, 8... Clear coating film, 9... Colorless transparent electrodeposition coating film, 10... Colored transparent electrodeposition coating film. Patent applicant Suzuki Motor Co., Ltd. (and 2 others) Figure 1 (α) (e) (b)
) (c) (CI) (d) Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (8)

[Claims] (1) A decorative plating layer characterized by forming a composite plating layer containing phosphorescent fine particles as a eutectoid substance on the surface of a material to be plated. (2) The decorative plating layer according to claim (1), wherein a luminescent pigment is used as the luminescent fine particles. (3) As the luminescent pigment, ZnS/Cu, ZnCd
The decorative plating layer according to claim 1, which is made of any one of S/Cu, CaSrS/Bi, and CaS/Bi. (4) A decorative plating layer characterized by forming a composite plating layer containing phosphorescent fine particles as a eutectoid substance on the surface of a material to be plated, and applying a colorless or colored transparent film on the composite plating layer. (5) The decorative plating layer according to claim (4), which uses a phosphorescent pigment as the phosphorescent fine particles. (6) As the luminescent pigment, ZnS/Cu, ZnCd
The decorative plating layer according to claim (5), which uses any one of S/Cu, CaSrS/Bi, and CaS/Bi. (7) The decorative plating layer according to any one of claims (4) to (6), wherein a clear coating film is applied as the transparent film. (8) The decorative plating layer according to any one of claims (4) to (6), wherein the transparent film is a colorless or colored electrodeposition coating.