The difference between the anodized and non-anodized aluminum alloy, what are the benefits of alloy aluminum anodized?
Aluminum anozided: A material protection technique in which a metal material forms an oxide film on the surface by applying an anodic current in an electrolyte solution. Also known as surface anodic oxidation. After the metal materials or products are anodized on the surface, their corrosion resistance, hardness, wear resistance, insulation, heat resistance, etc. are greatly improved. The anodized metal material is aluminum. The aluminum anodization is generally performed in an acidic electrolyte with aluminum as the anode. In the electrolysis process, oxygen anions react with aluminum to produce an oxide film. The film is not sufficiently dense at the beginning of the formation. Although there is a certain resistance, negative oxygen ions in the electrolyte can still reach the aluminum surface to form an oxide film. As the film thickness increases, the resistance also increases, and the electrolytic current becomes smaller. At this time, the outer oxide film in contact with the electrolyte is chemically dissolved. When the rate of oxide formation on the aluminum surface gradually equilibrates with the rate of chemical dissolution, this oxide film can achieve greater thickness under this electrolytic parameter. The anodized film of aluminum has a porous outer layer, which easily adsorbs dyes and colored materials, thereby dyeing and improving its decorative properties. After the oxide film is further treated with hot water, high temperature water vapor or nickel salt, it can further improve its corrosion resistance and wear resistance.
