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Shell and manufacturing method thereof

A manufacturing method and shell technology, which are applied in the directions of metal shells, cabinets/cabinets/drawer parts, ion implantation plating, etc., can solve the problem of difficulty in maintaining decorative appearance, and inability to effectively improve the corrosion resistance of magnesium or magnesium alloy substrates. performance, low electrode potential, etc.

Inactive Publication Date: 2012-05-23
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] However, since the standard electrode potential of magnesium or magnesium alloy is very low, the potential difference with the PVD coating, such as TiN layer or CrN layer, is relatively large, and the PVD coating itself will inevitably have tiny pores, such as pinholes and cracks, resulting in Magnesium or magnesium alloy substrates are prone to microbattery corrosion
Therefore, directly coating the color layers such as the TiN layer and CrN on the surface of the magnesium or magnesium alloy substrate cannot effectively improve the corrosion resistance of the magnesium or magnesium alloy substrate, and the PVD coating itself will also undergo discoloration, peeling, etc. Phenomenon, it is difficult to maintain a good decorative appearance

Method used

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  • Shell and manufacturing method thereof
  • Shell and manufacturing method thereof

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Embodiment Construction

[0020] see figure 1 , The casing 10 of a preferred embodiment of the present invention includes a magnesium or magnesium alloy substrate 11 , an anti-corrosion layer 13 and a color layer 15 sequentially formed on the magnesium or magnesium alloy substrate 11 . The casing 10 can be a casing of a 3C electronic product, and can also be an industrial, building component, and a vehicle component such as an automobile.

[0021] The anti-corrosion layer 13 includes a magnesium layer 131 and a magnesium oxide layer 133 , the magnesium layer 131 is formed on the surface of the substrate 11 , and the magnesium oxide layer 133 is formed on the surface of the magnesium layer 131 . The thickness of the magnesium layer 131 is 1.0-3.0 μm; the thickness of the magnesium oxide layer 133 is 0.5-1.0 μm.

[0022] The color layer 15 is a Ti-N layer with a thickness of 1.0-3.0 μm. It can be understood that the color layer 15 can also be a Cr-N layer or other decorative film layers.

[0023] Both...

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Abstract

A shell comprises a magnesium or magnesium alloy substrate. The shell is formed on an anti-corrosion coating which is on the surface of the magnesium or magnesium alloy substrate and is formed on a color layer which is on the surface of the anti-corrosion coating. The anti-corrosion coating comprises a magnesium layer and a magnesium oxide layer which are successively formed on the surface of the magnesium or magnesium alloy substrate. The shell possesses good corrosion resistance and a decorative appearance. The invention also provides the manufacturing method of the shell. The method comprises the following steps: providing the magnesium or magnesium alloy substrate; performing magnetron sputtering of the anti-corrosion coating on the magnesium or magnesium alloy substrate, wherein the anti-corrosion coating comprises the magnesium layer and the magnesium oxide layer which are successively formed on the surface of the magnesium or magnesium alloy substrate; performing magnetron sputtering of the decorative color layer on the anti-corrosion coating.

Description

technical field [0001] The invention relates to a casing and a manufacturing method thereof. Background technique [0002] Vacuum coating technology (PVD) is a very environmentally friendly film-forming technology. The film layer formed by vacuum coating has the advantages of high hardness, high wear resistance, chemical stability, firm combination with the substrate, and bright metal appearance. Therefore, vacuum coating is applied on the surface of metal substrates such as magnesium, magnesium alloy and stainless steel. Applications in the field of decorative treatments are increasing. [0003] However, since the standard electrode potential of magnesium or magnesium alloy is very low, the potential difference with the PVD coating, such as TiN layer or CrN layer, is relatively large, and the PVD coating itself will inevitably have tiny pores, such as pinholes and cracks, resulting in Magnesium or magnesium alloy substrates are prone to microbattery corrosion. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K5/04C23C14/35C23C14/16C23C14/08
CPCC23C14/024C23C14/0015H05K5/02C23C14/025C23C14/0641Y10T428/12549Y10T428/12611
Inventor 张新倍陈文荣蒋焕梧陈正士陈晓强
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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