JPS621857A - Formation of colored film - Google Patents

Abstract

PURPOSE:To easily form a fine colored film having an elegant and gorgeous image on the surface of a base metal by evaporating and ionizing one or more kinds of specified metals in gaseous oxygen, carbon or nitrogen. CONSTITUTION:One or more kinds of metals such as Co, Mg, Cr, Mo, W, Fe, Al, Be and Si combined optionally with a very small amount of a heavy metal as an impurity are evaporated and ionized in gaseous oxygen, carbon or nitrogen by an ion plating method. The resulting ions are deposited on the surface of a base metal to form a colored film. For example, the colored film is a fine cobalt-pink film consisting of CoO and MgO. The film is hardly stripped, has superior durability and is similar in composition to a jewel.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for forming a colored film, and it is possible to easily form a very beautiful colored film that can be used as a decorative item on the surface of a raw metal by an ion plating method. The present invention relates to a method for forming a colored film that can be formed in a manner that allows the formation of a colored film.

[Technical Background of the Invention and its Problems] Conventionally, metal surfaces have been frequently colored to make ornaments.

However, this coloring is done by applying paint and baking it, or by forming a colored metal film by wet plating, etc., but in either case, the color lacks depth and the poor image is erased. The current situation is that this is not possible. Furthermore, there is a drawback that the coating is easily peeled off, directly exposing the underlying metal material, and is relatively labor-intensive and expensive.

[Object of the invention] In view of the above-mentioned points, the present invention aims to make it possible to easily and inexpensively form a very beautiful colored film with a deep, elegant and luxurious image like a jewel. It was created for a purpose.

[Points of focus and outline of the invention] The points of view and outline of the present invention will be explained below.

Decorative items made by coloring metal surfaces lack depth in color and give off a poor image, and most of them also lack durability and are relatively expensive. .

Therefore, the inventor has been researching various methods of forming colored coatings that are durable and have a luxurious image at low cost. Upon investigation, it was found that these were crystals of oxides of simple metals and trace amounts of heavy metal impurities, or crystals of combinations of oxides of simple metals. Focusing on this point, we further polished and examined the formation of colored coatings that resembled jewelry or other colored coatings that created a luxurious image. , or their combinations, or their combinations with trace amounts of heavy metal impurities, are colored, such as cobalt, magnesium, chromium, molybdenum, tungsten, iron, aluminum, beryllium, silicon, etc. Alternatively, the above object could be achieved by forming a film by evaporating and ionizing it alone or in combination with a trace amount of heavy metal impurities, using an ion plating method in nitrogen gas.

[Embodiments of the invention] Examples of this invention will be described below.

Example 1゜ Cobalt (CO) and magnesium (
A colored film was formed by evaporating and ionizing Ma) at an appropriate ratio using the ion plating method and plating it on the surface of the raw metal.

As a result, cobalt oxide (Coo) is formed on the surface of the raw metal.
and magnesium oxide (M(J○) <Co 0
A beautiful cobalt pink colored film made of -Mo 0) was formed, and this film was difficult to peel off and had excellent durability. In this case, when a colored coating was formed using molybdenum (MO) instead of magnesium, a beautiful cobalt pink colored coating could be similarly formed.

Example 2 In oxygen gas, cobalt, iron (Fe), and aluminum (A1) were evaporated and ionized in appropriate ratios using the ion plating method, and plated on the surface of the raw metal to form a colored film.

As a result, cobalt oxide, diiron trioxide (Fe 203 ) and aluminum oxide (AI 2
o3) (COO・Fe2O3・A1203)
A beautiful colored coating of cobalt plan color was formed. This coating had excellent durability as in Example 1.

Example 3 Ionization of cobalt and aluminum or cobalt, magnesium, and aluminum in oxygen gas
Using the plating method, a colored film was formed by evaporation and ionization at an appropriate ratio and plating on the surface of the metal material.

As a result, the surface of the raw metal is made of a combination of cobalt oxide and aluminum oxide (Coo-Al□03) or a combination of cobalt oxide, magnesium oxide, and aluminum oxide (Coo-Ma○・A12o3). A beautiful cobalt blue colored film was formed. In this case, by appropriately changing the ratio of cobalt and aluminum, the color of the colored film changes from green to purple, and those fired at a low temperature exhibit a bright color, while those fired at a high temperature become opaque.

Example 4 Aluminum was evaporated and ionized together with a small amount of heavy metal impurities in oxygen gas by the ion plating method, and plated on the surface of the raw metal to form a colored film.

As a result, a beautiful ruby-colored or sapphire-colored jewel-like colored film was formed on the surface of the raw metal, mainly made of aluminum oxide. In this case, by appropriately changing the ratio of aluminum to heavy metal impurities or the type of heavy metal impurities, the color can be changed to ruby color, sapphire color, or an intermediate color thereof.

Example 5 In oxygen gas, beryllium (Be), aluminum, and silicon (Si) were evaporated and ionized in appropriate ratios using the ion plating method, and plated on the surface of the raw metal to form a colored film.

As a result, beryllium oxide (Bfl
i O), aluminum oxide and silicon oxide (Si 02
) (3BeO-Al2O2-65iO2)
A beautiful emerald colored film was formed.

The colored coatings formed in Example 30, Example 40, and Example 5 are those of Example 16, Example 2. Similarly, it is a highly durable coating, and each of the examples above was plated under normal ion plating conditions.

In addition, when the material is a non-metallic non-conductive object, the surface of the material is coated with a conductive material that is easy to ion plate using electroless plating, and then a colored film as described above is formed. Good.

Furthermore, in carbon or nitrogen gas, ions and
If each element is evaporated and ionized and plated using the plating method, carbides, nitrides, or a combination of these and trace amounts of heavy metal impurities are formed on the surface of the raw metal instead of the above-mentioned oxides. A beautiful colored film is formed by the combination with

Even if a single substance such as chromium or tungsten is used under the conditions of each of the embodiments described above, a similarly beautiful colored film can be formed.

[Effects of the Invention] The present invention configured as described above is characterized in that oxides, carbides, nitrides, or combinations thereof, or combinations of these and trace amounts of heavy metal impurities become colored on the surface of the raw metal. elemental substances such as cobalt, magnesium, chromium, molybdenum, tungsten, iron, aluminum, beryllium, silicon, singly or in combination, by ion plating in oxygen or carbon or nitrogen gas; In the case of oxygen gas, the oxide of the simple substance,
In the case of carbon gas, a simple carbide is formed, and in the case of nitrogen gas, a simple nitride is formed and ionized, and these ions are impact-deposited on the surface of the material metal to which a negative voltage is applied. On the surface of the material metal, each oxide,
A bond formed by carbide, nitride, or a combination thereof, or a bond formed by these and a trace amount of heavy metal impurity, is plated very strongly.

Therefore, if the oxide, carbide, nitride, or each combination has the same composition as a gemstone, it will have the same color as the gemstone, and other substances will also have a very deep and beautiful coloration. The colored film formed gives an elegant and luxurious image. Furthermore, this colored film is highly durable as it does not easily peel off, and since it is plated using the ion plating method, a thin film can be formed, eliminating material waste, and allowing the ratio of single parts to be set. If this is done, anyone can form it without requiring a skilled person, leading to cost reductions.

As explained above, according to the present invention, a very beautiful colored coating with an elegant and luxurious image can be easily and inexpensively formed on the surface of a metal material, which can stimulate the consumer's desire to purchase. It has excellent effects.

Claims (1)

[Claims] 1. Cobalt, magnesium, chromium, molybdenum, tungsten, iron, where the surface of the raw metal is colored by oxides, carbides, nitrides, combinations of these, or combinations of these and trace amounts of heavy metal impurities. aluminum,
Single substances such as beryllium, silicon, etc. are evaporated and ionized to form a film by ion plating in oxygen, carbon, or nitrogen gas, singly or in combination, or with trace amounts of heavy metal impurities. A method for forming a colored film characterized by: