Characteristics Of Aluminum Anodized Film:

1) Corrosion resistance. The anodized aluminum film can effectively protect the aluminum matrix from corrosion. The anodized aluminum film obviously has better performance than the naturally formed oxide film, and the film thickness and sealing quality directly affect the service performance.

2) Hardness and wear resistance. The hardness of aluminum anodized film is much higher than that of aluminum matrix, the hardness of the matrix is HV100, the hardness of ordinary anodized film is about HV300, and the hardness of oxide film can reach HV500. The relationship between wear resistance and hardness is consistent.

3) Decorative. The anodized aluminum film protects the metallic sheen of the polished surface. The anodized aluminum film can also be stained and tinted to obtain and maintain a colorful appearance.

4) Adhesion of organic coating and electroplating. Anodized aluminum film is a method of accepting organic coating and electroplating on aluminum surface. It can effectively improve the adhesion and corrosion resistance of the surface layer.

5) Electrical insulation. Aluminum is a good conductor, and aluminum anodized film is a high resistance insulating film. The breakdown voltage of insulation is greater than 30V/mm, and the specially prepared high insulation film even reaches about 200V/mm.

6) Transparency. Aluminum anodized film itself is very transparent, the higher the purity of aluminum, the higher the transparency. The purity of aluminum alloy material and alloy composition have influence on the transparency.

7) Functionality. By using the porosity of anodic oxide film, various functional materials can be prepared by depositing functional particles in micropores. The functional parts under development have electromagnetic function, catalytic function, sensing function and separation function.

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