Inorganic Corrosion Inhibitors
Inorganic corrosion inhibitors act like "protective armor" for metal, primarily forming a protective film on the metal surface through chemical reactions. Common examples include chromates, phosphates, and silicates. These inhibitors offer outstanding high-temperature resistance, making them particularly suitable for use in high-temperature environments such as industrial boilers and heat exchangers. However, it should be noted that certain chromium-containing products may pose environmental risks.
Organic Corrosion Inhibitors
Organic corrosion inhibitors function like an "invisible protective suit," forming a molecular protective layer on the metal surface through adsorption. They primarily include amines, carboxylic acids, and heterocyclic compounds. These products feature low volatility and low toxicity, making them widely used for routine protection in applications such as automotive cooling systems and mechanical equipment. Organic corrosion inhibitors, in particular, are highly effective even at very low concentrations.
Composite Corrosion Inhibitors
Composite corrosion inhibitors combine the advantages of both inorganic and organic types, acting like a "smart protection system." Through the synergistic action of multiple components, they provide both rapid film formation and long-lasting protection. Common examples include molybdate-organic amine systems and zinc salt-polymer systems. These products offer broad adaptability and are particularly well-suited for protecting metal in complex operating conditions.