JPH0137353B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a decorative body having a novel patterned surface.

The interference colors exhibited by transparent dielectric thin films have long attracted the attention of many people, and the use of shells to make cod dens, pearls, etc.
Decorations using natural products such as inlays of fish scales are preferred, but recently, with advances in thin film manufacturing technology, many decorations are being made that utilize the interference colors of artificially created transparent dielectric thin films. It became. These decorations are made by attaching a transparent dielectric material to glass, metal plates, or metal foils as a film of appropriate thickness by vacuum evaporation, sputtering, ion plating, vapor phase growth, or other methods, so that they exhibit light interference colors. This is what I did. However, the surfaces exhibiting these interference colors are glossy, uniform planes or curved surfaces, and are continuous thin films, and although the interference color surfaces are beautiful, they are monotonous.

This invention is the same as the above-mentioned conventional method in that it aims to create a decorative object that utilizes the interference colors of light, but it also aims to create a more complex and profound optical interference pattern layer. .

That is, this invention forms a metal thin film on the glazed surface of a glazed substrate by any one of vacuum evaporation, sputtering, ion plating, vapor phase growth, and plating, and further forms a metal thin film on the glazed surface by any of the above methods. The gist of the present invention is a method for producing a decorative body, which is characterized by forming a thin film of an inorganic compound in a glaze and treating it at a high temperature at which the glaze becomes semi-fluid to form a light-coherent surface layer exhibiting an aesthetic pattern. It is something.

Substrates used in the present invention include copper, silver, gold,
Examples include metals such as iron, steel, stainless steel, and other alloys, and heat-resistant materials such as ceramics, ceramics, and glass.

Glazes include glazes for ceramics and glazes for metals (enamel glaze, cloisonné glaze), and an appropriate glaze is selected and used depending on the material of the substrate. The glaze may be colorless, colored, or opaque. The substrate may be glazed by a conventionally known method.

A thin metal film is then formed on the glazed surface of the glazed substrate by any one of vacuum evaporation, sputtering, ion plating, vapor phase growth, and plating. The materials of the metal thin film produced include Fe, Cr, Ni, Cu, Au,
Ag, Pt, Zn, Ti, Mn, Al, Mg, Zr, Si, Pb,
Various materials such as Sn, In, Sb, Co, Mo, W, Bi, steel, and alloys are used.

The thickness of the metal thin film varies depending on the material, but it should be thick enough to be broken by the semi-fluidity of the underlying glaze.

An inorganic compound thin film is further formed on the metal thin film using any of the methods used to form the metal thin film, such as vacuum evaporation, sputtering, ion plating, and vapor phase growth. These methods require fairly precise techniques and are more time-consuming than metal thin film fabrication.
Inorganic compounds include Fe, Cr, Ni, Cu, Zn,
Ti, Mn, Al, Mg, Zr, Si, Pb, Sn, In, Sb,
Oxides such as Co, Ce, Mo, W, Bi, V, Cd,
Sb, Zn sulfides, Ca, Li, Mg, Na fluorides, complex compounds such as NaF/AlF ₃ , CaO/SiO ₂ ,
Glass, gemstones, oxides of alloys, etc. are used, and these are formed as thin films. All thin films exhibit interference colors.

The glazed substrate coated with the metal thin film or inorganic compound thin film produced in this way is subjected to high-temperature treatment, which can be done using burner heating, infrared heating, in addition to electric furnaces and ceramic furnaces.
Heating methods such as dielectric or induction heating are used. The high temperature treatment temperature is preferably such that the glaze exhibits semi-fluidity. Although it varies depending on the type of glaze, a temperature range of 300 to 1600°C is sufficient in most cases.

The purpose of high-temperature treatment is to make the glaze semi-fluid and prevent cracks, wrinkles, etc. from forming in the thin metal film or inorganic compound film.
It also creates stripes, bubbles, etc. to change the pattern. The figure is intended to explain the condition in an easy-to-understand manner, but when the thin metal film or inorganic compound film formed on the glaze surface by the above method is observed under a microscope, it shows irregular cracks ranging from thick cracks 1 to thin cracks 2. Cracks, wrinkles 3, streaks 4, and bubble holes 5 may occur, and the underlying glaze may appear due to bumps 6. This is presumed to be caused by the relationship between the rapid volume change that occurs when the glaze reaches its glass transition point and the mechanical strength of the thin film.

Although the metal thin film is rarely dissolved in the glaze, which becomes semi-fluid at high temperatures, its oxide is easily dissolved in the glaze and loses its interference color.

Therefore, the temperature conditions of high-temperature treatment, temperature unevenness,
Due to the thickness of the thin film, uneven thickness, etc., and the high temperature treatment time, the above effects are intertwined in a complicated manner, and the thin film on the surface of the substrate has complex cracks, wrinkles, stripes, etc. in the inorganic oxide layer and the metal layer. In addition, the metal oxide dissolves in the glaze and disappears, forming the background pattern of the glaze, forming bubbles and bumps, creating an uneven surface that becomes matte, and creating a matte-like appearance due to the conventional simple interference. An interference color pattern can be obtained with a complex and profound taste different from that of a color pattern.

Furthermore, the high temperature treatment allows the thin film layer to be firmly bonded to the glaze, making it resistant to friction and wear.

The high-temperature treatment time may be set at a time where the desired pattern appears, taking into account the above-mentioned complex effects.

Examples will be described below.

Example 1 Low-temperature enamel glaze (melting point 550℃) on a cleaned iron plate
A glazed enamel plate is made by applying this process, and this is placed in a vacuum evaporation device to deposit Fe to a thickness of approximately 0.9 microns on the glazed surface.This substrate is placed in a sputtering device, and the above-mentioned Fe evaporation is performed using the glass plate as a target. The surface was sputtered for an additional 20 minutes to obtain a substrate exhibiting bright interference colors. This was placed in an electric furnace and heat treated at 600°C for 1 minute to obtain a substrate with a matt-like interference color pattern with large and small cracks.

Example 2 A glaze (melting point: 800°C) was applied to a cleaned ceramic plate, the glazed ceramic plate was placed in a sputtering device that targeted metallic chromium, a thin film of metallic chromium was formed on the glazed surface, and then the same device was used to form a thin film of metallic chromium. ,
By introducing a small amount of oxygen in addition to argon gas and performing sputtering, they were able to form a thin film of chromium oxide that shows even more vivid interference colors on the thin metal film. By treating this in a furnace (850°C) for 3 minutes, a ceramic plate was obtained that had a thin film with cracks, striations, and holes that partially exhibited various interference colors.

As described above, according to the present invention, a decorative body having a novel patterned surface can be obtained, which is extremely useful as ornaments, tableware, building materials, crafts, etc.

[Brief explanation of drawings]

The figure is an explanatory view of the surface condition of the product of the present invention. 1... Thick crack, 2... Thin crack, 3... Wrinkle, 4...
strip, 5... bubble hole, 6... bumping part.

Claims (1)

[Claims] 1. Form a metal thin film on the glazed surface of the glazed substrate by vacuum evaporation, sputtering, ion plating, vapor phase growth, or plating, and then apply an inorganic compound thin film on top of it by any of the above methods. 1. A method for producing a decorative body, which comprises forming a glaze and subjecting it to high temperature treatment at a temperature at which the glaze becomes semi-fluid to form a light interference surface layer exhibiting an aesthetic pattern.