Wahyono Suprapto, Rudy Soenoko, Agus Suprapto, Femiana Gapsari
Organic inhibitors became popular for protection against corrosion especially in acid solution in acid to prevent metal dissolution. Hydrochloric acid is widely used in the pickling, cleaning, and descaling process of metals. The high performance of corrosion inhibition efficiency of Cera alba(CA) extract was investigated for 304SS corrosion in 1Mhydrochloric acid using polarizationpotentodynamic method. The extract of CA was characterized by Fourier Transform Infrared Spectroscopy (FTIR). The polarization study indicated that the formulations act as mixed-type inhibitor. The adsorption process on 304SS followed Frumkin isotherm. The associated activation parameters and the thermodynamics data of adsorption were evaluated and discussed. The adsorbed film formed on the metal surfaced was characterized byScanning Electron Microscope (SEM). © School of Engineering, Taylor’s University.
Mechanical Engineering, Faculty of Engineering, Brawijaya University, MT.Haryono 110, Malang, Indonesia
