When present in an appropriate concentration and form in the environment (medium), chemical substances or compounds that can prevent or slow down material corrosion, therefore corrosion inhibitors can also be called corrosion inhibitors
Corrosion inhibitor. Its dosage is very small (0.1% to 1%), but the effect is significant. This method of protecting metals is called corrosion inhibitor protection. Corrosion inhibitors are used for neutral media (boiler water, circulating cooling water), acidic media (hydrochloric acid for removing boiler scale, acid leaching solution for rust removal of plated parts before electroplating), and gas media (gas-phase corrosion inhibitors)