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Kinetic investigation of C38 steel corrosion in concentrated perchloric acid solutions |
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| Authors: | M Benabdellah KF Khaled B Hammouti |
| Affiliation: | 1. Laboratoire de Chimie Appliquée & Environnement, Faculté des Sciences, Université Mohammed Premier, BP 717, 60 000 Oujda, Morocco;2. Electrochemistry Research Laboratory, Chemistry Department, Faculty of Education, Ain Shams University, Roxy Cairo, Egypt;3. Materials and Corrosion Laboratory, Chemistry Department, Faculty of Science, Taif University, Hawiya 888, Saudi Arabia |
| Abstract: | The corrosion behaviour of steel at various concentrations of perchloric acid was studied by weight loss method in temperature range from 298 to 323 K. Results obtained show that corrosiveness of acid increases with its concentration and temperature. The logarithm of corrosion rate was plotted against the acid concentration and values of Hammett Ho and Strehlow Ro(H) acidity functions. The activation energies, enthalpies and entropies of the corrosion process of steel were also determined and fitted against Ro(H). |
| Keywords: | Steel Perchloric acid Corrosion Thermodynamic activation characterisation Acidity functions |
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