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Surface treatment method for aluminum alloy and housing prepared from aluminum alloy

A technology of surface treatment and aluminum alloy, which is applied in the field of surface treatment of aluminum alloy and shells made of aluminum alloy, can solve the problems of PVD coating corrosion resistance reduction, electrochemical corrosion, etc., achieve no environmental pollution, improve Corrosion resistance, simple process effect

Inactive Publication Date: 2012-04-04
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Problems solved by technology

However, because the standard electrode potential of aluminum alloy is very low, and the PVD coating itself will inevitably have tiny pores, the PVD coating formed on the surface of aluminum alloy is prone to electrochemical corrosion, resulting in the corrosion resistance of the PVD coating. Reduced performance, limited improvement in corrosion resistance of aluminum alloys

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  • Surface treatment method for aluminum alloy and housing prepared from aluminum alloy
  • Surface treatment method for aluminum alloy and housing prepared from aluminum alloy
  • Surface treatment method for aluminum alloy and housing prepared from aluminum alloy

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Embodiment Construction

[0020] Please also see figure 1 and figure 2 , the surface treatment method of the aluminum alloy of a preferred embodiment of the present invention comprises the following steps:

[0021] S101: Provide an aluminum alloy base 11 .

[0022] The aluminum alloy base 11 can be obtained by stamping.

[0023] S102: Perform pretreatment on the aluminum alloy substrate 11 . This pretreatment includes:

[0024] The aluminum alloy base 11 is polished to remove the oxide film on the surface of the aluminum alloy base 11 . After polishing, the surface roughness Rz of the aluminum alloy substrate 11 is less than 1.2 μm.

[0025] The polished aluminum alloy substrate 11 is sequentially placed in deionized water and acetone with a purity greater than 99.9% for ultrasonic cleaning to remove oil stains on the surface. After cleaning, the aluminum alloy substrate 11 is dried for future use.

[0026] S103: forming an aluminum layer 13 on the surface of the aluminum alloy substrate 11 by ...

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Abstract

The invention provides a surface treatment method for aluminum alloy. According to the method, an aluminum layer is formed on the surface of a matrix of the aluminum alloy through magnetron sputtering, and an ion implantation film is formed on the aluminum layer; the ion implantation film mainly contains solid solution phases of Al2O3 and AlO. A composite membrane layer composed of the aluminum layer and the ion implantation film substantially improves corrosion resistance of the matrix of the aluminum alloy. The invention also provides housing prepared from the aluminum alloy.

Description

technical field [0001] The invention relates to a surface treatment method of aluminum alloy and a shell made of aluminum alloy. Background technique [0002] Aluminum alloys are currently widely used in industrial fields such as aviation, aerospace, automobiles and microelectronics. However, the standard electrode potential of aluminum alloy is very low, and its corrosion resistance is poor. Exposure to the natural environment will cause rapid surface corrosion. [0003] The method of improving the corrosion resistance of aluminum alloys is usually to form a protective coating on its surface. Traditional surface treatment methods for aluminum alloys such as anodic oxidation, electrodeposition, chemical conversion coating technology, and electroplating have shortcomings such as complex production processes, low efficiency, and serious environmental pollution. [0004] Vacuum deposition (PVD) is a clean film forming technology. However, because the standard electrode poten...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/35C23C14/58C23C8/36C23C28/00
CPCC23C14/5853C23C14/505C23C14/14C23C14/5833
Inventor 张新倍陈文荣蒋焕梧陈正士张满喜
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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