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Streptomycin: A commercially available drug as corrosion inhibitor for mild steel in hydrochloric acid solution
Authors:Sudhish Kumar Shukla  Ashish Kumar Singh  Ishtiaque Ahamad  M.A. Quraishi
Affiliation:1. Chemistry Department, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia;2. Chemistry Department, Faculty of Science, Benha University, Benha, Egypt;3. Egyptian Petroleum Research Institute, Nasr City - Cairo, Egypt;1. Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran;2. The Persian Gulf Marine Biotechnology Research Center, Bushehr University of Medical Sciences, Bushehr, Iran;1. Department of Chemistry, Mangalore Institute of Technology and Engineering, Moodbidri, Mangalore-574225, and Affiliated to Visvesvaraya Technological University, Belagavi, Karnataka, India;2. Department of Chemistry, Jawaharlal Nehru National College of Engineering (JNNCE), Shivamogga-577204, and Affiliated to Visvesvaraya Technological University, Belagavi, Karnataka, India;3. Department of Chemistry, BMS Institute of Technology and Management, Avalahalli, Bangalore-560064, and Affiliated to Visvesvaraya Technological University, Belagavi, Karnataka, India;4. Department of Chemistry, Jain Institute of Technology, Davanagere-577003, and Affiliated to Visvesvaraya Technological University, Belagavi, Karnataka, India
Abstract:The corrosion inhibition of mild steel in 1 M HCl solution by Streptomycin has been studied by Tafel polarization, electrochemical impedance spectroscopy (EIS) and weight loss measurement. The inhibitor showed 88.5% inhibition efficiency at optimum concentration 500 ppm. Results obtained revealed that inhibition occurs through adsorption of the drug on metal surface without modifying the mechanism of corrosion process. Potentiodynamic polarization studies suggest that it is a mixed type of inhibitor. Electrochemical impedance spectroscopy techniques were also used to investigate the mechanism of corrosion inhibition.
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