The difference
between anode oxidation and chemical oxidation of aluminum profiles
Aluminum
profile oxidation method has anode oxidation and chemical oxidation mode, But
the chemical oxidation method of the oxidation film is relatively thin, so it
is not very commonly used.
The differences
are as follows:
Anode oxidation
is the placement of industrial aluminum profiles in acid-base solution, the two
ends of aluminum through high-voltage direct current, so that it has an
electrolytic reaction and the aluminum profile surface forms a dense
transparent oxide film layer.
Chemical
oxidation does not require power, only the aluminum profile is soaked in
chemical potions so that the aluminum on the surface of the aluminum profile
oxidation reaction to produce an oxide film.
1. Anode
oxidation is an electrochemical reaction, and chemical oxidation belongs to a
pure chemical reaction.
2. The anodized
film is thick, can reach 10-15μ , chemical oxidation film is thinner, only 0.3 to 0.5μ .
3. The
industrial aluminum profile after anode oxidation is not conductive, while the
aluminum profile after chemical oxidation has good conductivity. Because
aluminum profile anodized film is thick, alumina is insulated, so wrapped in
the alumina film aluminum profile is also insulated.
The chemical
oxidation film is very thin, it will not affect the conductivity of aluminum
profiles, so chemical oxidation is also called conductive oxidation. Aluminum
profile products with conductivity requirements generally will use the method
of chemically oxidized.
4. Anode
oxidation after the hardness and wear resistance of industrial aluminum
profiles will also be improved, chemical oxidation will not change.
5.Anode alumina
profiles resistant to dirt, easy to clean. The aluminum that conducts
electrical alumina is not resistant to dirt and is easy to leave a handprint.