Effect of acidity level Ro(H) on the corrosion of steel in concentrated HCL solutions |
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| Institution: | 1. Laboratoire de Chimie des Eaux et Corrosion, Faculté des Sciences, Oujda, Morocco;2. Laboratoire de Physico-Chimie des Matériaux associés à l''AUPELF-UREF (LAF 509), Ecole Normale Supérieure de Takaddoum, B.P. 5118. Rabat, Morocco;1. Sahlgrenska Cancer Center at the Sahlgrenska Academy, University of Gothenburg, Box 425, SE 405 30 Gothenburg, Sweden;2. Molecular Biology Research Center, School of Life Sciences, Central South University, 110, Xiangya Road, Changsha, Hunan 410078, PR China;1. Universidade Federal do Rio Grande do Norte, Centro de Tecnologia, Departamento de Engenharia Química, Programa de Pós-Graduação em Engenharia Química, Campus Universitário, CEP 59072-970, Natal, RN, Brazil;2. Universidade Federal do Rio Grande do Norte, Centro de Tecnologia, Departamento de Engenharia Química, Campus Universitário, CEP 59072-970, Natal, RN, Brazil;1. Poznan University of Technology, Institute of Machines and Motor Vehicles, Piotrowo 3, 60-965 Poznań, Poland;2. Poznan University of Technology, Institute of Materials Science and Engineering, M. Sklodowskiej-Curie 5, 60-965 Poznań, Poland;1. Institute of Advanced Manufacturing and Modern Equipment Technology, Jiangsu University, Zhenjiang, China;2. School of Mechanical Engineering, Jiangsu University, Zhenjiang, China;3. School of Materials Science and Engineering, Jiangsu University, Zhenjiang, China;1. School of Materials Science and Engineering, Xiangtan University, Xiangtan, 411105, China;2. Department of Material Engineering, Zhejiang Industry & Trade Vocational College, Wenzhou, 325003, China |
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| Abstract: | The corrosion of a carbon steel in (0.5 – 9.0 M) HCl media using weight loss, electrochemical polarization and polarization resistance measurements was investigated. The corrosion data are discussed as function of the Strehlow acidity function Ro(H) which is the extension of pH in concentrated solutions. Weight loss, corrosion current densities and resistance polarization values show a linear behaviour with the Ro(H) acidity function. The corrosion potential-Ro(H) plot is also linear using the ferricinium (Fc+) / ferrocene (Fc) reference electrode in concentrated acid solutions. |
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