مشخصات پژوهش

عنوان	Performance of EP/PpPDA and EP/PpPDA/SiO2nanocomposite oncorrosion inhibition of steel in hydrochloric acid solutionAbbas
نوع پژوهش	مقاله چاپ شده
کلیدواژه‌ها	NanocompositeThermodynamic functionsActivation energyCharge-transfer resistancea
چکیده	tEpoxy-poly p-phenylendiamine (EP/PpPDA) and its nanocomposite with SiO2nanoparticles(EP/PpPDA/SiO2) were synthesized and tested as potential corrosion inhibitors of steel in 1 M HClsolution. Performance of EP/PpPDA/SiO2and EP/PpPDA coatings on protection of steel against corrosionwas investigated using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS),and Atomic force microscopy (AFM) and at various temperatures between 298 and 328 K. Changes inthe coating resistance and charge-transfer resistance with temperature were analyzed to determine theactivation energies of the processes involved. The determined values of activation energy showed that theEP/PpPDA/SiO2coating has better anti-corrosion effect than EP/PpPDA. The thermodynamic functions ofdissolution processes were also calculated and discussed. The results from AFM observations indicatedthat the presence of SiO2nanoparticles increased the roughness of Epoxy-poly p-phenylendiamine/SiO2nanocomposite (EP/PpPDA/SiO2). It was finally concluded that the presence of silica nanoparticlesenhance the protection properties of EP/PpPDA coating as a novel potential corrosion inhibitor for steel.
پژوهشگران	علی رستمی (نفر چهارم)، عبد اله عمرانی (نفر سوم)، عباسعلی رستمی (نفر دوم)، عباس امامقلی زاده (نفر اول)