KR20030003450A - An plating method of arc discharge for forming plating layers in various colors on stainless steel - Google Patents

Abstract

PURPOSE: An arc discharge ion plating method is provided to obtain a various colored stainless steel sheet having superior durability and acid and abrasion resistance by injecting a mixed gas of nitrogen and acetylene, thereby forming the plating layer having a specific color on the surface of the steel sheet according to mixing ratio thereof. CONSTITUTION: The arc discharge ion plating method for forming a plating layer of various colors on a stainless steel sheet is characterized in that a plating layer of a specific color is formed on the surface of a material to be plated according to a mixing ratio of the gases by injecting a mixed gas of nitrogen and acetylene that are mixed in different ratios respectively when metal ions, an evaporation source, are emitted, a brown plating layer is formed by using titanium as the evaporation source and the mixed gas injected comprising 20 to 30 wt.% of acetylene and 80 to 70 wt.% of nitrogen, a bronze plating layer is formed by using titanium as the evaporation source and the mixed gas injected comprising 30 to 60 wt.% of acetylene and 70 to 40 wt.% of nitrogen, a black plating layer is formed by using titanium as the evaporation source and the mixed gas injected comprising 70 to 90 wt.% of acetylene and 30 to 10 wt.% of nitrogen, a gold plating layer is formed by using titanium as the evaporation source and injecting 100 wt.% of nitrogen as the mixed gas injected, and the plating layer of various colors is formed on a stainless steel sheet using zirconium as the evaporation source.

Description

An plating method of arc discharge for forming plating layers in various colors on stainless steel}

The present invention relates to an ion plating method for forming a coating film by depositing metal ions of a plating product generated by arc discharge on the surface of a stainless steel plate to be plated, and in particular, by injecting a mixture of nitrogen and acetylene in different ratios. It is to be able to form a plating layer of various colors.

Conventionally, in order to form a color plated layer on a stainless steel sheet, a metal ion, which is a plated material, is formed on the surface of the plated material by wet plating to precipitate in an aqueous solution state, but there is a problem of water pollution due to plating waste water, and adhesion. As a result, the defect rate is high due to weak durability, and manufacturing costs are increased due to the use of expensive raw materials such as gold, single copper, and brass to express a specific color.

Therefore, dry plating, such as ion plating, is applied to cutting tool materials, semiconductor materials, aircraft materials, and other high-grade building materials and ornaments that require excellent adhesion and compactness, rather than the formation of plating layers by wet plating. will be.

However, as a typical ion plating method for this purpose, an inert gas such as argon (Ar) is injected into the discharge gas to evaporate the plating material in an inert gas atmosphere by argon, and the evaporation material of the plating material is subjected to a high voltage of (-). While passing through the plasma region of the glow discharge continuously generated around the workpiece and surroundings, it is deposited by plating by attracting electrons, being charged with (+) ions, and being attracted to the surface of the (-) workpiece to collide with it. Although it is possible to form a coating layer having excellent physical properties, the ionization rate is low, and a high voltage is applied to the substrate to increase the temperature of the substrate, thereby causing a problem of damaging the film formed on the surface of the plating material.

In addition, in the method of inserting the filament (ground) and the auxiliary anode between the evaporation source and the substrate so that the evaporation sources are ionized by the low energy thermal electron group, the ionization of the evaporate can be controlled to obtain a high ionization rate, and a discharge gas is introduced. Although it is possible to do ion plating under high vacuum, the process is complicated by using a high frequency and has a disadvantage of being expensive.

Therefore, the present invention has been made to solve the above-mentioned problems, in the arc discharge ion plating, when the metal ions of the plating is released injecting nitrogen and acetylene mixed gas composed of different ratios in the mixing ratio Accordingly, it is to provide a stainless steel sheet of various colors excellent in durability, acid resistance, and wear resistance by forming a plating layer of a specific color on the surface of the stainless steel sheet to be plated.

1 is a schematic view showing the configuration of the arc discharge ion plating apparatus of the present invention.

<Description of the symbols for the main parts of the drawings>

1: vacuum chamber 2: plated plate holder

3: movement time 4: arc source

5: gas inlet

In the arc discharge type ion plating, when a metal ion as an evaporation source is released, a mixture of nitrogen and acetylene composed of different ratios is injected to inject a stainless steel plate having a specific color plating layer according to a mixing ratio. To form.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in describing each of the drawings, only the same components, even if shown on the other drawings have the same reference numerals and reference numerals and descriptions are omitted for the parts that are symmetrical with each other.

1 shows an example of an arc discharge type ion plating apparatus for achieving the present invention, and a plated plate holder 2 on which a vacuum chamber 1 for advancing a reaction and a wide stainless steel plate to be plated can be mounted. It consists of an arc source 4 for plating the transfer chamber 3 for entry and exit into the vacuum chamber 1 and a gas inlet 5 for supplying an appropriate gas while rotating it.

At this time, the plated plate holder (2) is manufactured in the form that is commonly used and is insulated so that the specimen cleanliness and ion plating by spattering is fixed to the vacuum chamber (1), and to be heated through a temperature control device, The gap between the plated base 2 is provided at intervals of about 15 to 35 cm.

In addition, the arc source (4) is the place where the evaporation material is placed opposite to the plated plate holder 2, the evaporation power is applied to the target of the arc source (4) as a cathode and the vacuum chamber ( When 1) is used as the anode, the triggering electrode instantly contacts the target to generate arc discharge, and forms a plated layer of various colors on the plated material by reaction with the mixed gas introduced through the gas inlet 5. You can do it.

Hereinafter, a method of implementing the arc-discharge type ion plating apparatus and its effect will be described.

First, the pump is pumped to 6 x 10 ^-3 Pa to make a vacuum inside the vacuum chamber 1, and then mixed gas is added to maintain a vacuum of nx 10 ^-1 to nx 10 ^-2 Pa. .

At this time, if the target of the arc source (4) is the cathode and the vacuum chamber (1) is the anode, the arcing electrode is instantaneously contacted with the target to generate an arc discharge. This phenomenon causes a large number of arc inversions moving irregularly on the target surface. These spots have very large current densities and moving speeds, and each spot serves as an evaporation source, emitting electrons, metal ions, neutral particles, and liquid kernels.

The double metal cation forms a strong electric field near the target surface. The electrons are released from the target surface by the action of the electric field, and the cations impact the cathode target surface to evaporate the target portion at high temperature.

At this time, the duration of the intermediate spot is very short and it splits again and moves to the place where the energy function is small to form new spot.

The continuous circulation as described above makes the arc current constant and maintains the plasma state.

At this time, when a bias is applied to the substrate to form an electric field, the metal layer of the evaporated or reflected plating metal is formed to form a film by impacting and depositing the surface of the plated material with high energy. Is absorbed into the vacuum chamber (1).

Therefore, in the arc discharge ion plating, since the evaporated metal itself becomes a discharge gas without the need for a discharge gas, stable plasma is formed even at 10 ^-3 Pa. The bonding strength of the film formed on the surface of the forbidden body is excellent, and the reaction rate with the mixed gas to be introduced is high, so that the plating film of various colors specified by the ratio of nitrogen and acetylene, which is a component of the mixed gas, can be formed. Will be.

Hereinafter, an embodiment in which a plated film of various colors is formed on the surface of a stainless steel sheet by the above-described method is as follows.

{Example 1}

Plated: Stainless wide steel

Arc source (4) or evaporation source: titanium (Ti) or zirconium (Zr)

Inlet gas: 20 to 30% acetylene, 80 to 70% mixed gas

Vacuum degree of the vacuum chamber (1): 5x10 ^-2 to 7x10 ^-1 Pa

Current flowing through the arc source (4) or evaporation source: 50 to 60 A

Heating temperature: 150 ~ 200 ℃

Running time: 16 minutes

*** Result: A plated layer of titanium (Ti) or zirconium (Zr) was formed on the surface of the stainless steel sheet.

{Example 2}

Plated: Stainless wide steel

Arc source (4) or evaporation source: titanium (Ti) or zirconium (Zr)

Inlet gas: mixed gas of acetylene 30 ~ 60%, nitrogen 70 ~ 40%

Vacuum degree of the vacuum chamber (1): 5x10 ^-2 to 7x10 ^-1 Pa

Current flowing through the arc source (4) or evaporation source: 50 to 60 A

Heating temperature: 150 ~ 200 ℃

Running time: 16 minutes

Results: A plated layer of titanium (Ti) or zirconium (Zr) was formed on the surface of the stainless steel sheet in bronze.

{Example 3}

Plated: Stainless wide steel

Arc source (4) or evaporation source: titanium (Ti) or zirconium (Zr)

Inlet gas: mixed gas of acetylene 70 ~ 90%, nitrogen 30 ~ 10%

Vacuum degree of the vacuum chamber (1): 5x10 ^-2 to 7x10 ^-1 Pa

Current flowing through the arc source (4) or evaporation source: 50 to 60 A

Heating temperature: 150 ~ 200 ℃

Running time: 16 minutes

Results: A plating layer of titanium (Ti) or zirconium (Zr) was formed on the surface of the stainless steel sheet.

{Example 4}

Plated: Stainless wide steel

Arc source (4) or evaporation source: titanium (Ti) or zirconium (Zr)

Introductory gas: nitrogen 1000%

Vacuum degree of the vacuum chamber (1): 5x10 ^-2 to 7x10 ^-1 Pa

Current flowing through the arc source (4) or evaporation source: 50 to 60 A

Heating temperature: 150 ~ 200 ℃

Running time: 16 minutes

Results: A plating layer of titanium (Ti) or zirconium (Zr) reacted with gold was formed on the surface of the stainless steel sheet.

As demonstrated in the above embodiment, the present invention is capable of forming a plating layer of various colors reacted in a specific color on a wide surface of stainless steel according to the mixing ratio of nitric acid and acetylene which are mixed gases introduced during ion plating. .

As described above, the arc-discharge ion plating method of the present invention is excellent in durability, acid resistance, and wear resistance, and of various colors according to the mixing ratio of nitrogen and acetylene introduced without using expensive raw materials for forming a color plating layer. Since the plating layer can be formed, it is inexpensive and dry, so that there is no possibility of water pollution.

Claims (6)

In arc-discharge type ion plating, when a metal ion as evaporation source is released, nitrogen and acetylene mixed gas composed of different ratios are injected to form a plating layer having a specific color on the surface of the plated material according to the mixing ratio. Arc discharge ion plating method for forming a plating layer of various colors on a stainless steel sheet. The stainless steel sheet according to claim 1, wherein titanium (Ti) is used as the evaporation source, and the mixed gas injected comprises 20-30% of acetylene and 80-70% of nitrogen to form a brown plating layer. Arc discharge ion plating method for forming a plated layer of various colors on. The method of claim 1, wherein titanium (Ti) is used as the evaporation source, and the injected mixed gas is composed of acetylene 30 to 60% and nitrogen 70 to 40% to form a bronze plated layer. Arc discharge ion plating method for forming plating layers of various colors on steel sheets. The stainless steel sheet according to claim 1, wherein titanium (Ti) is used as the evaporation source, and the mixed gas to be injected is composed of acetylene 70 to 90% and nitrogen 30 to 10% to form a black plating layer. Arc discharge ion plating method for forming a plating layer of various colors on the surface. The method of claim 1, wherein titanium (Ti) is used as the evaporation source, and the mixed gas to be injected is composed of 100% nitrogen to inject a gas to form a gold plating layer of various colors on the stainless steel sheet. Arc discharge ion plating method for forming a plating layer. The arc discharge ion plating method according to claim 1, wherein a zirconium (Zr) is used as the evaporation source to form a plating layer having various colors on a stainless steel sheet.