| abstract |
The invention provides a composite passivation solution and a preparation method and application thereof. Taking the total weight of the composite passivation solution to be 100 parts, the raw materials include: 5-25 parts of silane coupling agent, 10-30 parts of lower saturated aliphatic alcohol, 2-15 parts of hydrochloric acid aqueous solution with a mass percentage concentration of 2.5% , 0.5-10 parts of an organic acid aqueous solution with a concentration of 20% by mass, 0.5-10 parts of a conductive polyaniline butanol solution with a concentration of 0.2%-10% by mass, and the balance of water. The present invention also provides a metal surface anti-corrosion method using the above-mentioned composite passivation solution. The composite passivation solution of the present invention can make the metal substrate have good anti-corrosion performance. |