A method for high corrosion resistance alloy passivation film colored in surface preparation

The present invention discloses a process for preparing a high corrosion resistance of the colored aluminum surface passivation film, comprising the steps of: (1) pre-treatment of the aluminum surface; (2) in step (1) facing the treated aluminum in the treatment solution, immersing a time constant to obtain a yellow passivation film containing zirconium, titanium, vanadium aluminum alloy surface; treatment liquid composition of the aluminum alloy of the following: fluoro titanic acid 0.1g / L ~ 20g / L, fluoro zirconate 0.1g / L ~ 30g / L, sodium metavanadate 0.2g / L ~ 40g / L, tannic acid 0.1g / L ~ 20g / L. The present invention is produced having a color film, easy to observe, and can be formed quickly passivation film having a high corrosion resistance.