Coated device with black multilayer film and preparation method thereof

A multi-layer film and black technology, which is applied in the direction of plating, coating, sputtering plating, etc. of superimposed layers, can solve the problems of large environmental pollution, low L value, poor corrosion resistance and wear resistance, etc. Strong corrosion resistance, good metallic luster, and strong wear resistance

Active Publication Date: 2020-12-29
NANCHANG KOHLER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both spraying and electrophoresis methods inevitably have the disadvantages of large environmental pollution, lack of metal texture in appearance, poor corrosion resistance and wear resistance; and it is difficult for the existing vacuum coating technology to have a low L value (the lower the L value , the color is blacker) and good corrosion resistance and wear resistance; for example, other dark bathroom products such as gun black prepared by PVD process on the market can only pass acid salt spray for 24 hours at most, which is difficult to meet consumers' quality requirements need

Method used

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  • Coated device with black multilayer film and preparation method thereof
  • Coated device with black multilayer film and preparation method thereof
  • Coated device with black multilayer film and preparation method thereof

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preparation example Construction

[0038] The preparation method of the coating device with black multilayer film provided by the invention, main steps are as follows:

[0039] 1) performing plasma etching on the substrate of the black multilayer film to be plated;

[0040] 2) plating a chromium nitride film on the surface of the substrate treated in step 1); preferably the thickness of the chromium nitride film is 50-90nm;

[0041] 3) the first composite film is plated on the surface of the chromium nitride film formed in step 2), and the first composite film is a mixed coating layer of chromium carbonitride, chromium carbide, chromium nitride and doped hydrogen-containing amorphous carbon , the doping elements in the doped hydrogen-containing amorphous carbon include nitrogen and chromium; preferably, the thickness of the first composite film is 40-80nm;

[0042] 4) plate a second composite film on the surface of the first composite film formed in step 3), and the second composite film is a mixed coating of ...

Embodiment 1

[0069] The method for plating a black multilayer film on the surface of a sanitary product body (that is, a substrate) of a metal material (copper alloy in this example) electroplated with chromium, and the specific steps include:

[0070] Pretreatment: Clean the surface of the chrome-plated bathroom product body to remove oil, wax and dust. Then proceed as follows.

[0071] Step 1): Transfer the pretreated bathroom product body to the hanger of the vacuum coating machine, and the vacuum degree reaches 3.5×10 -5 During Torr, the surface of the bathroom product body is treated with plasma. The specific process conditions are as follows: 100 sccm argon gas is introduced, the ion source power is 350 W, the furnace temperature is 150° C., and the processing time is 10 min.

[0072] Step 2): The workpiece processed in step 1) is plated with chromium nitride film by multi-arc ion coating technology, and the process parameters are as follows: multi-arc current 50A, negative bias vo...

Embodiment 2

[0077] The method for plating a black multilayer film on the surface of a sanitary product body of electrochrome-plated metal material (in this example, zinc alloy), the specific steps include:

[0078] Pretreatment: Clean the surface of the chrome-plated bathroom product body to remove oil, wax and dust. Then proceed as follows.

[0079] Step 1): Transfer the pretreated bathroom product body to the hanger of the vacuum coating machine, and the vacuum degree reaches 3.5×10 -5 During Torr, the surface of the bathroom product body is treated with plasma. The specific process conditions are as follows: 100 sccm argon gas is introduced, the ion source power is 350 W, the furnace temperature is 145° C., and the processing time is 10 min.

[0080] Step 2): The workpiece processed in step 1) is plated with chromium nitride film by multi-arc ion coating technology, and the process parameters are as follows: multi-arc current 50A, negative bias voltage 240V, duty cycle 75%, argon gas...

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Abstract

The invention provides a coated device with a black multilayer film and a preparation method thereof. The black multilayer film formed on the surface of the coated device not only has the characteristics of low L value, good metal texture, high hardness and the like, but also has excellent wear resistance and corrosion resistance. The preparation method comprises the following steps that 1) plasmaetching is carried out on a substrate to be coated with the black multilayer film; 2) the surface of the substrate is coated with a chromium nitride film; 3) the surface of the chromium nitride filmformed in the step 2) is coated with a first composite film, the first composite film is a mixed coating layer of chromium carbonitride, chromium carbide, chromium nitride and doped hydrogen-containing amorphous carbon, and doped elements in the doped hydrogen-containing amorphous carbon comprise nitrogen and chromium; 4) the surface of the first composite film formed in the step 3) is coated witha second composite film, and the second composite film is a mixed coating layer of chromium carbide and chromium-doped hydrogen-containing amorphous carbon; and 5) the surface of the second compositefilm formed in the step 4) is coated with a hydrogen-containing amorphous carbon film.

Description

technical field [0001] The invention relates to the technical field of surface treatment of bathroom products, in particular to a coating device with a black film with strong corrosion resistance and wear resistance and a preparation method thereof. Background technique [0002] In recent years, with the continuous improvement of consumers' pursuit of the quality of bathroom products, people's demand for product durability, color diversity and high cost performance is getting higher and higher. As a classic color in the field of decoration, black is deeply loved by consumers. The main methods of forming black film on the surface of existing bathroom products include spraying method, electrophoresis method and PVD vacuum coating method. Both spraying and electrophoresis methods inevitably have the disadvantages of large environmental pollution, lack of metal texture in appearance, poor corrosion resistance and wear resistance; and it is difficult for the existing vacuum coat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/04C23C14/32C23C14/02C23C14/06C23C16/26
CPCC23C28/046C23C14/0036C23C14/0057C23C14/325C23C14/022C23C14/0635C23C14/0641C23C14/0664C23C16/26
Inventor 戴文勤熊文涛程朝阳
Owner NANCHANG KOHLER
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