Corrosion inhibitors are a type of chemical that can reduce the oxidation or corrosion of metals and are widely used in industrial production and daily life. Different types of corrosion inhibitors have different components, but generally include the following:
Organic corrosion inhibitors: These components are mainly composed of organic compounds containing active groups, such as fatty acids, alcohols, amines, phenols, ketones, etc. They can form a film like protective layer covering the metal surface, thereby playing a corrosion inhibition role.
Nitrate: Nitrate is a type of inorganic salt, such as sodium nitrite, copper nitrite, etc. It can form a protective layer on the metal surface through oxidation-reduction reactions, thereby slowing down the rate of metal oxidation and corrosion.
Phosphate: Phosphate is a type of inorganic compound that can react with metal ions and form a certain strength protective layer, such as tricalcium phosphate, potassium dihydrogen oxalate, etc. They can effectively alleviate corrosion on metal surfaces.
Passivating agent: This type of compound can form a very stable oxide protective layer on the metal surface, such as chromium oxide, zinc oxide, etc. These oxide protective layers have high chemical inertness and can effectively prevent corrosion.
Ionic corrosion inhibitors: These components mainly include various cations and anions, such as Zn2+, Fe2+, PO43-, MoO42- plasma systems, which can slow down the corrosion of metal surfaces and improve their natural protection ability.
It should be noted that the specific composition of corrosion inhibitors should be selected based on different corrosive environments and metal materials. When using corrosion inhibitors, they should be used in accordance with operating procedures and comply with relevant regulations.