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Shell and manufacture method thereof

A manufacturing method and shell technology, applied in the direction of ion implantation plating, coating, transportation and packaging, etc., can solve the problems of magnesium or magnesium alloy matrix micro-battery corrosion, shedding, large potential difference, etc.

Inactive Publication Date: 2012-06-06
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
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  • Claims
  • 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 manufacture 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 nitride layer 133 , the magnesium layer 131 is formed on the surface of the magnesium or magnesium alloy substrate 11 , and the magnesium nitride layer 133 is formed on the surface of the magnesium layer 131 . The thickness of the magnesium layer 131 is 0.2-0.5 μm; the thickness of the magnesium nitride layer 133 is 0.5-2.0 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 dec...

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Abstract

The invention provides a shell which comprises a magnesium or magnesium alloy matrix, an anticorrosion layer formed on the surface of the magnesium or magnesium alloy matrix and a color layer formed on the surface of the anticorrosion layer, wherein, the anticorrosion layer comprises a magnesium layer and a magnesium nitride layer, which are sequentially formed on the surface of the magnesium or magnesium alloy matrix, and the shell has good corrosion resistance and a decorative appearance. The invention also provides a manufacture method for the shell. The method comprises the following steps: providing the magnesium or magnesium alloy matrix; forming the anticorrosion layer on the magnesium or magnesium alloy matrix through magnetron sputtering, wherein the anticorrosion layer comprises the magnesium layer and the magnesium nitride layer, which are sequentially formed on the surface of the magnesium or magnesium alloy matrix; and forming the decorative color layer on the anticorrosion layer through magnetron sputtering.

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, high chemical stability, firm combination with the substrate and bright metal appearance. Therefore, vacuum coating can be used on metal substrates such as magnesium, magnesium alloy and stainless steel The application in the field of material surface decorative treatment is more and more extensive. [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 co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/04C23C14/35
CPCC23C14/165C23C14/022C23C14/0641Y10T428/12576
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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