Aluminum alloy passivation is a process that converts the surface of aluminum into a stable layer of inorganic compounds to increase its corrosion resistance and wear resistance.
A dense oxide layer is formed on the surface of the passivated aluminum alloy, which significantly improves its corrosion resistance.
The oxide layer has a certain degree of insulation and can effectively prevent conductance, so the surface of the aluminum alloy after passivation is not conductive to a certain extent. However, because the oxide layer is thin and easily damaged, it cannot completely block the conductance, so even the surface of the aluminum alloy after passivation treatment does not have good electrical conductivity.