The anodic oxidation of aluminum is perhaps one of the most widespread galvanic processes in the world, and affects sectors ranging from Aeronautics, Naval, Railways, Electronic Mechanics up to the Architecture sector and for purely decorative or functional applications.

Anodizing is an electrochemical process by which a protective oxide layer forms on the treated surface and protects it from corrosion and atmospheric agents.
The process consists in a superficial transformation of the aluminum into aluminum oxide, by means of the immersion of the parts to be treated in an acid solution where a passage of direct current takes place, with the objects acting as anode (positive pole).

The atomic oxygen that develops with the passage of the current combines with the aluminum atoms forming an oxide whose growth is controlled, with an improvement in properties compared to the oxide that forms naturally. The oxide layer formed varies from 5 microns to 30 microns. There are two types of thin or hard to thick anodic oxidation.

  • NATURAL SULFURIC ANODIC OXIDATION
    • SEALING IN HOT WATER
    • SODIUM DICHROMATE SEALING
    • COLORED BLACK SEALING IN WATER
  • CHROMIC ANODIC OXIDATION OF ALUMINUM
    • SEALING IN HOT WATER
    • SODIUM DICHROMATE SEALING
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