Author(s)

Ahmed M. Eldesoky^1,2, Azza M. Attia^3,4, Omayma E. Ahmed⁵, Mohamed A. Abo-Elsoud^6*

¹Engineering Chemistry Department, High Institute of Engineering & Technology, New Damietta, Egypt.
²Chemistry Department, Al-Qunfudah University College, Umm Al-Qura University, Mecca, KSA.
³Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt.
⁴Faculty of Science and Arts, Chemistry Department, Najran University, Najran, KSA.
⁵Evaluation and Analytical Department, Egyptian Petroleum Research Institute, Cairo, Egypt.
⁶Physics Department, The University College in Al-Qunfudah, Umm Al-Qura University, Mecca, KSA.

The corrosion hindrance of Cu in 2.0 M HNO₃ solution by 2-amino-6-methyl-5-oxo-4-phenyl-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carbonitrile compound has been studied, using Potentiodynamic Polarization (PP), AC Impedance (EIS), Electrochemical Frequency Modulation (EFM) techniques. Also, EIS test was utilized to confirm the corrosion protection mechanism. 2-amino-6-methyl-5-oxo-4-phenyl-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carbonitrile compound is suggested as a mixed kind inhibitor. SEM and EDX investigations of the Cu in 2.0 M HNO₃ surface revealed that assembles protect Cu from corrosion by adsorption on its surfaces by a forming coating film. Clearly, the assembled mechanisms play a role as a barrier to corrosive solution.

Carbonitrile, Cu, SEM, EDX, EIS, EFM

Eldesoky, A. , Attia, A. , Ahmed, O. and Abo-Elsoud, M. (2019) Electrochemical and Surface Characterization Studies of 2-amino-6-methyl-5-oxo-4-phenyl-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carbonitrile Compound on Copper in 2 M HNO₃. Journal of Materials Science and Chemical Engineering, 7, 71-86. doi: 10.4236/msce.2019.712009.