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Difference between anodizing and electroplating

  • Author:Zoe Jia
  • Release on:2023-09-20
Process principle: Anodizing is an electrochemical reaction in which a dense oxide layer is formed by placing the metal on the anode to react with the oxidant in the electrolyte. Electroplating, on the other hand, is to soak the metal in an electrolyte containing metal ions, reduce the metal ions by electric current, and form a metal coating on the metal surface.

Coating properties: After anodizing, the metal surface will form a dense, hard, wear-resistant, corrosion-resistant, good insulation layer oxide layer. The coating formed after electroplating usually has good electrical conductivity and corrosion resistance, while having a different appearance and color.

Treatment object: anodizing is usually suitable for the surface treatment of light metal materials such as aluminum, magnesium and titanium, while electroplating is more suitable for the surface treatment of heavy metal materials such as copper, chromium, nickel, and zinc.

Processing efficiency: The anodizing treatment time is relatively long, taking tens of minutes to hours, while electroplating usually takes a long time to achieve the desired coating thickness and quality.

In summary, although anodizing and electroplating are both surface treatment technologies, their principles, coating properties, treatment objects and processing efficiency are different. In practical applications, the appropriate surface treatment technology should be selected according to the specific requirements. Anodizing is suitable for surface corrosion protection and wear resistance treatment of light metal materials, while electroplating is suitable for surface treatment of heavy metal materials and can achieve different appearance and color.

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