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Anodic oxide film, preparation method thereof, and aluminum alloy housing containing same, mobile phone

An anodizing film and anodizing technology, applied in the direction of anodizing, telephone communication, telephone structure, etc., can solve the problem of cracking of the anodizing film, reduce the deformation rate of the shell, reduce the deformation of the shell, and have good corrosion resistance. Effect

Active Publication Date: 2021-02-26
XIAN YIPU COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem of the cracking of the anodized film of the aluminum alloy casing of the mobile phone during the drop process, and at the same time satisfy the performance of the antenna of the mobile phone while ensuring the stability of the shell structure and the anodized film. A kind of anodic oxide film and its preparation method and the aluminum alloy casing containing it, mobile phone

Method used

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  • Anodic oxide film, preparation method thereof, and aluminum alloy housing containing same, mobile phone
  • Anodic oxide film, preparation method thereof, and aluminum alloy housing containing same, mobile phone
  • Anodic oxide film, preparation method thereof, and aluminum alloy housing containing same, mobile phone

Examples

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Effect test

Embodiment 1

[0050] (1) The polishing machine uses different types of sandpaper to polish the aluminum alloy shell from coarse to fine. The thickness of the side wall of the aluminum alloy shell is ≥0.85mm, and the smooth transition in the thickness direction is ≥1:20.

[0051] (2) Rinse the aluminum alloy shell with deionized water, then immerse the aluminum alloy in the degreasing solution (P3Almeco36) for 10 minutes at 65°C; rinse the aluminum alloy with deionized water, and then immerse the aluminum sheet in Soak in strong alkaline solution (TURCO Aluminetch) for 2 minutes at 60°C; rinse the aluminum substrate with deionized water, then soak in acidic solution (TURCO Liquid Smut Go NC) for 10 minutes at 50°C; Rinse the aluminum substrate with ≤35us / cm deionized water to obtain a pretreated aluminum alloy shell.

[0052] (3) The electrolyte is a mixture of concentrated sulfuric acid and tartaric acid (purchased from Shenzhen Xinyuansheng Chemical Co., Ltd.), the concentration of the ele...

Embodiment 2

[0056] The preparation conditions for preparing the anodized film in step (3) are: the concentration of the electrolyte is 200g / L, the temperature of the bath solution is 19°C, the oxidation voltage is 12.5V, and the current density is 1.5A / dm 2 . The concentration of the sealing solution in step (4) is 14g / L. All the other operations and conditions are the same as in Example 1.

[0057] The thickness of the anodic oxidation film of the aluminum alloy casing prepared in this embodiment is 18 μm, the density is above 0.80, and the hardness of the oxide film is above 100 HB. α-Al in anodized film 2 o 3 The content is 80%.

Embodiment 3

[0059] The preparation conditions for preparing the anodized film in step (3) are: the concentration of the electrolyte is 180g / L, the temperature of the bath is 20°C, the oxidation voltage is 13.5V, and the current density is 1.8A / dm 2 . The concentration of the sealing solution in step (4) is 12g / L. All the other operations and conditions are the same as in Example 1.

[0060] The thickness of the anodic oxidation film of the aluminum alloy shell obtained in this embodiment is more than 15 μm, the density is more than 0.6, and the hardness of the oxide film is more than 100 HB. α-Al in anodized film 2 o 3 The content is more than 80%.

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Abstract

The invention discloses an anodic oxidation film, a preparation method thereof, an aluminum alloy casing containing the same, and a mobile phone. The preparation method includes the following steps: anodizing and sealing the aluminum alloy shell; the thickness of the side wall of the aluminum alloy shell is ≥0.85mm, and the smooth transition of the aluminum alloy shell in the thickness direction ≥1:20; the anodic oxidation conditions: the oxidation voltage is 11.5V~15V, the current density is 1.2~2A / dm 2 , the concentration of the electrolyte is 180-200g / L; the conditions of the sealing treatment: the concentration of the sealing solution is 12-15g / L; the thickness of the anodic oxide film is above 15 μm. The anodized film of the aluminum alloy shell prepared by the present invention has a density of more than 0.6, a hardness of more than 100HB, and α-Al 2 o 3 The content is more than 80%, which can effectively reduce the "slippery layer" of the anode film during the drop process.

Description

technical field [0001] The invention relates to an anodic oxidation film, a preparation method thereof, an aluminum alloy casing containing the same, and a mobile phone. Background technique [0002] In recent years, with the continuous innovation of smart mobile phone technology, the differentiated competition among mobile phone manufacturers has become more and more fierce, and various highly innovative products have emerged one after another. Among them, smart mobile phones with metal bodies are A breakthrough in the field of structural components for mobile phones. For a mobile phone, the appearance is often the most important part for consumers, and the material is a very important aspect that determines the appearance of a mobile phone. Models with a metal body design have excellent texture and are more and more popular among consumers. favor. Representatives of mainstream metal models currently on the market include OPPO R9s, OPPO R9, HTC ONEM9, Huawei P8, iPhone6, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/04C25D7/00H04M1/02
CPCC25D7/00C25D11/04H04M1/0202
Inventor 王博吴继炎佘小栋
Owner XIAN YIPU COMM TECH