Evaluation of Nicotinic Acid As a Corrosion Inhibitor of Galvanized Steel in Sodium Chloride Solution

Zinc coatings are commonly used to protect steel from different types of corrosion. However, zinc is an electrochemical reactive metal; applying surface treatment galvanized materials usually necessary increase the system's lifetime. An alternative method for improving service life these use corrosion inhibitors. Nicotinic acid, chemically formulated as C 5 H 4 NCO, a water-soluble vitamin. It part B complex, which has been effectively tested in Zn and Zn-Al alloys acid medium, so it was proposed possible inhibitor pretreatment. Outstanding results determined maximum efficiency 20 ppm nicotinic NaCl 3%wt solution per 66.6% efficiency. In addition, exhibits activity prevent formation pitting saline environments.