eng Oriental Scientific Publishing Company Material Science Research India 0973-3469 2010-02-13 7 1 137 144 2252 article Study on the Performance of Ajowan Seeds Extract on the Corrosion of Steel in Acidic Solution by Effect of Temperature Aisha M. Al-Turkestani 1 King Abd El-Aziz University, Girls College of Education, Chemistry Department, Jeddah, KSA

Electrochemical measurements (EIS and PDP) have been used to study the temperature effect in the range (30p C - 70p C) on the performance of Ajowan seeds extract (ASE) and its inhibitive effects on the corrosion of steel in 2.0M H2SO4. A good agreement between the data obtained by impedance and polarization measurements was found. Results obtained reveal that ASE reduces the corrosion rate at all temperatures studied. The inhibition efficiency increases with rise temperature and the activation corrosion energy decrease in presence of ASE suggest a chemical adsorption model for the corrosion processes.Thermodynamic parameters, Ea, ΔH#, ΔS# have been calculated and are discussed.

 https://www.materialsciencejournal.org/vol7no1/study-on-the-performance-of-ajowan-seeds-extract-on-the-corrosion-of-steel-in-acidic-solution-by-effect-of-temperature/ Steel Acidic inhibition Temperatur effect Acidic corrosion