Corrosion inhibitor is a commonly used chemical agent used to slow down the corrosion rate of metals in specific environments. Their main functions are:
Metal surface protection: Corrosion inhibitors can form a protective film on the metal surface, blocking direct contact between the metal and the medium, thereby reducing metal corrosion. This membrane can be a physical barrier or a chemical substance with corrosion inhibition properties.
Inhibition of electrochemical reactions: Corrosion inhibitors can alter the electrochemical characteristics of metal surfaces and reduce the electrochemical reaction rate between metals and media. They can interfere with or inhibit the progress of anodic or cathodic reactions, thereby reducing the occurrence of corrosion.
Dissolved metal ions: Some corrosion inhibitors can form complexes or complexes with metal surfaces, promoting the re deposition of dissolved metal ions or the formation of more stable complexes. This can reduce the solubility of metals in the medium and reduce metal corrosion.
Self repair ability: Some corrosion inhibitors have self repair function. When the metal surface is slightly corroded or damaged, the corrosion inhibitor can repair the corroded area and form a protective film.
By using corrosion inhibitors, the corrosion rate of metals can be effectively reduced, the service life of metal equipment can be extended, and the economic losses caused by corrosion can be reduced. However, the selection of appropriate corrosion inhibitors under different metal and environmental conditions is crucial to ensure the best corrosion inhibition effect and safety performance.