What Is Hard Anodized Aluminum?
Anodized aluminum refers to the coating of a dense layer of aluminum oxide on the surface of aluminum and aluminum alloys. In order to prevent further oxidation, its chemical properties are the same as aluminum oxide. Unlike ordinary oxide films, anodized aluminum can be colored by electrolytic coloring.
Anodized aluminum
- Chinese name
- Anodized aluminum
- Foreign name
- Anodic Aluminum Oxide (AAO)
- Meaning
- Its chemical properties are the same as alumina
- Belong to
- Anodized aluminum can be electrolytically colored and dyed
- Aka
- Anodizing
- Anodized aluminum refers to the coating of a dense layer of aluminum oxide on the surface of aluminum and aluminum alloys. In order to prevent further oxidation, its chemical properties are the same as aluminum oxide. Unlike ordinary oxide films, anodized aluminum can be colored by electrolytic coloring.
- The principle of preparation of anodized aluminum is
- Mechanical polishing
- 2.
- Effect of Sulfuric Acid Anodized Aluminum Alloy Composition on Oxide Film
- In addition to the chemical composition of the aluminum alloy, it also affects the thickness of the oxide film. For example, under the same oxidation treatment conditions, the oxide film obtained from pure aluminum is thicker than that of aluminum alloy. The aluminum-silicon alloy is difficult to oxidize, and the oxide film layer is dull and gray. Therefore, sheet metal parts with and without aluminum clad layer should be anodized separately. Because the oxide film of pure aluminum is formed quickly and thick during the same-tank oxidation treatment, the oxide film of bare aluminum (with an oxide film) is formed slowly and thin. [1]