What are the Action Mechanisms of Metal Deactivators?
1. Film-Forming Action
Metal deactivators are organic compounds containing S, P, N, or other non-metallic elements. They form a dense, stable chemical protective film on the metal surface to prevent corrosion, block metals and their ions from entering the oil, and weaken their catalytic oxidation effect on the oil. This chemical film also prevents active sulfur, organic acids, or free radicals from attacking the metal surface, thereby protecting the metal.
2. Chelating Action
Metal deactivators form stable chelates with metal ions or precipitate metal ions into insoluble substances, thereby masking the catalytic activity of the metal ions.
Metal deactivators suppress the catalytic effect of metals or their ions on oxidation, acting as effective antioxidants while also serving as excellent copper corrosion inhibitors, anti-wear agents, and rust inhibitors; thus, they are widely used in various oil products.
Can metal passivators be used alone as rust inhibitors?
Metal passivators inhibit the catalytic oxidation reactions of lubricants caused by metal ions. They are generally used in dosages ranging from 0.001% to 0.2% and are not used alone; when combined with antioxidants, they exhibit an excellent synergistic effect.
Chorus is a professional supplier of lubricant additives, offering metal deactivators and antioxidant packages suitable for various application scenarios. We can provide the latest quotes on the same day—feel free to contact us!
