Volatile corrosion inhibitor film formation on carbon steel surface and its inhibition effect on the atmospheric corrosion of carbon steel |
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| Institution: | 1. Electrochemical Research Group, Shanghai University of Electric Power, Shanghai 200090, PR China;2. Department of Chemistry, Shanghai University, Shanghai 200436, PR China;1. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;2. Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;3. Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;1. Faculty of Natural Sciences, Karshi State University, Karshi 180100, Uzbekistan;2. Department of Chemistry, Government Digvijay Autonomous Postgraduate College, Rajnandgaon, Chhattisgarh 491441, India;3. Faculty of Chemistry, National University of Uzbekistan, Tashkent 100034, Uzbekistan;4. School of Materials and Chemical Engineering, Tongren University, Tongren 554300, China;1. Institute of Design Science and Basic Components, School of Mechanical Engineering, Xi''an Jiaotong University, Xi''an 710049, China;2. Beijing Aeronautical Engineering Technical Research Center, Beijing 100076, China;1. School of Reliability and Systems Engineering, Beihang University, Beijing, China;2. The Key Laboratory of Reliability and Environmental Engineering Technology, Beijing, China;3. Southwest Institute of Technology and Engineering, Chongqing, China |
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| Abstract: | A novel volatile corrosion inhibitor (VCI), bis-piperidiniummethyl-urea (BPMU), was developed for temporary protection of carbon steel. Its vapor corrosion inhibition property was evaluated under simulated operational conditions. Electrochemical impedance spectroscopy was applied to study the inhibition effect of BPMU on the corrosion of carbon steel with a thin stimulated atmospheric corrosion water layers. Adsorption of BPMU on carbon steel surfaces was investigated by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The results indicate that BPMU can form a protective film on the metal surface, which protects the metal against further corrosion. The structure of the protective film was suggested as one BPMU molecule chelated with one Fe atom to form a complex with two hexa-rings. |
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