“…Currently, several technologies have been explored to defend carbon steel structures from corrosion by seawater media, such as the use of organic or inorganic coatings, the incorporation of alloying elements into carbon steel, electrochemical cathode or anode protection technology, and adding corrosion inhibitors in the medium solution . It is found that many inhibitors are effective in enhancing anti-corrosion performance of steels. − The inhibitors are prone to produce a high energy barrier for ion transport and electron tunneling by forming a thin coordinate film on the steel substrate based on the heteroatoms such as sulfur, nitrogen, and phosphorous or multiple bonds, thereby passivating the electrochemical reaction of the metal substrate. It is one of the most commonly strategies for its convenient transportation, direct use, and remarkable effectiveness.…”