Rust inhibitors, also known as corrosion inhibitors or rust preventatives, are chemicals added to surfaces to help slow down their oxidation process, preventing corrosion. Their molecules attach to the metal’s surface, creating a protective layer alone or with metallic ions.
There are several types of corrosion inhibitors with different characteristics and application suitability.
Barrier Coatings
These inhibitors protect surfaces by creating a physical barrier with the target metal surface, keeping water and oxygen from reaching the surface. You can choose oil-based, wax-based, or grease-based barrier coatings.
Volatile Corrosion Inhibitors (VCIs)
VCIs release volatile compounds or vapors, creating a protective layer on your metal surfaces. They are primarily utilized in enclosed spaces like packaged materials to keep the components safe during shipping and storage.
Anodic Inhibitors
These inhibitors work by forming an oxide protective film on metal surfaces. That results in a substantial anodic shift, forcing metallic surfaces into the passivation region and reducing the metal’s corrosion potential. Anodic inhibitors include molybdates, nitrates chromates, and tungstate.
Cathodic Inhibitors
These work by slowing cathodic reactions, limiting species’ diffusion to your metal surface. Examples include oxygen scavengers and cathodic poison.
Water-Displacing Inhibitors
These inhibitors are efficient for use in environments with much water, like metal grinding, cutting, and machining. They create a barrier on the metal surface, displacing moisture and preventing rust formation.
Coatings
Coatings include paint or powder coatings that create physical barriers on metal surfaces. While regular paints and powered coats effectively keep moisture away, look for the ones with corrosion inhibitors for better protection.
Italmatch Chemicals works to offer relevant and creative solutions for clients in different industries as they strive to become the leading chemical organization in the industry. Contact them at Lubeperformanceadditives.com for expert advice on rust inhibitors and order their products.
