Gemini Cationic Schiff Bases and Their Metal Complexes in Preventing Carbon Steel Dissolution in Acidic Medium


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Resumo

The protection of carbon steel in the presence of three cationic Schiff bases and their copper and cobalt complexes in 0.5 M H2SO4 was investigated in terms of corrosion inhibition efficiency using weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) methods. The results showed high corrosion inhibition efficiency of the inhibitors and their metal complexes. The inhibition efficiency was raised by increasing the inhibitors concentration. From polarization curves, the inhibitors act as mixed type ones. The EIS spectra exhibit a large capacitive loop at high frequencies followed by a large inductive one at low frequencies.

Sobre autores

Sadeek Sadeek

Faculty of Science—Zagazig University

Email: nabelnegm@hotmail.com
Egito, Zagazig

Ahmed El Farrargy

Faculty of Science—Zagazig University

Email: nabelnegm@hotmail.com
Egito, Zagazig

Mohamed Abd El Raouf

Egyptian Petroleum Research Institute

Email: nabelnegm@hotmail.com
Egito, Nasr City, Cairo

Nabel Negm

Egyptian Petroleum Research Institute

Autor responsável pela correspondência
Email: nabelnegm@hotmail.com
Egito, Nasr City, Cairo

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