What are the types of aluminum corrosion inhibitors

Aluminum corrosion inhibitors are a type of chemical substance used to prevent the corrosion of aluminum metals. The following are several common aluminum corrosion inhibitors:

Phosphate corrosion inhibitor: Phosphate is a commonly used aluminum corrosion inhibitor. It can form a protective aluminum phosphate layer, reducing the corrosion rate of aluminum metal. Common phosphate corrosion inhibitors include sodium phosphite, sodium dihydrogen phosphate, etc.

Nitrate corrosion inhibitor: Nitrate is another commonly used aluminum corrosion inhibitor. It can provide oxidants to help form an oxide film on aluminum and slow down the oxidation reaction of aluminum. Common nitrate corrosion inhibitors include sodium nitrate, ammonium nitrate, etc.

Organic corrosion inhibitors: Some organic compounds can also be used as aluminum corrosion inhibitors. They can form an adsorption layer or complex with the surface of aluminum metal, slowing down the corrosion of aluminum. Common organic corrosion inhibitors include certain organic acids (such as acetic acid, oxalic acid) and amino acids.

Silicate corrosion inhibitor: Silicate compounds can react with aluminum to form an aluminum silicate layer, which has an anti-corrosion effect. Common silicate corrosion inhibitors include sodium silicate, aluminum silicate, etc.

It is necessary to select suitable aluminum corrosion inhibitors based on specific application scenarios and requirements, and follow relevant usage guidelines and safety operation specifications.