Events 1st Corrosion and Materials Degradation Web Conference

Event submissions

Published

10.3390/CMDWC2021-09984

This submission belongs to the session S8. Corrosion-Barrier Coatings of the event 1st Corrosion and Materials Degradation Web Conference

Published date

08 May, 2021

Citation

Omar DAGDAG, Zaki Safi, Lei Guo, Hamid Erramli, Mustapha El Gouri, Assessment of the anticorrosive efficiency of zinc phosphate (ZP) and epoxy resin (DGEBA-DAA) based composite (DGEBA-DAA-ZP) for electrolytic cadmium pre-treated 15CDV6 steel in 3wt% NaCl medium: experimental and computational studies, in Proceedings of 1st Corrosion and Materials Degradation Web Conference, 17 May–19 May 2021, MDPI: Basel, Switzerland, doi: 10.3390/CMDWC2021-09984

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Assessment of the anticorrosive efficiency of zinc phosphate (ZP) and epoxy resin (DGEBA-DAA) based composite (DGEBA-DAA-ZP) for electrolytic cadmium pre-treated 15CDV6 steel in 3wt% NaCl medium: experimental and computational studies

Omar DAGDAG ¹

Zaki Safi ²

Lei Guo ³

Hamid Erramli ⁴

Mustapha El Gouri ⁵

1. Laboratory of Industrial Technologies and Services (LITS), Department of Process Engineering, Height School of Technology, Sidi Mohammed Ben Abdallah University, P.O. Box 2427, 30000, Fes, Morocco

2. Al Azhar University-Gaza, Chemistry Department, Faculty of Science, P.O Box 1277, Gaza, Palestine

3. School of Materials and Chemical Engineering, Tongren University, Tongren, 554300, China

4. Laboratory of Organic Chemistry, Catalysis and Environment, Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000 Kenitra, Morocco

5. aboratory of Industrial Technologies and Services (LITS), Department of Process Engineering, Height School of Technology, Sidi Mohammed Ben Abdallah University, P.O. Box 2427, 30000, Fes, Morocco.

Abstract

The present study invokes on the assessment of the anticorrosive efficiency of zinc phosphate (ZP) and epoxy resin (DGEBA-DAA) based composite (DGEBA-DAA-ZP) for electrolytic cadmium pre-treated 15CDV6 steel in 3wt% NaCl medium. The composite formulation (DGEBA-DAA-ZP) performances as effective anti-corrosive coating at different exposure times ranging from 60, 120 and 180 days in a salt spray chamber. Electrochemical impedance spectroscopy (EIS) and molecular dynamic (MD) simulations were used to illustrate the anti-corrosive property of the composite. EIS study revealed that the composite acted as strong interface inhibitor and the anticorrosive behavior decreases with increasing the exposure time. Similarly, results reveal that the longer the exposure time, the lower the magnitude of charge transfer resistance (R_ct) and coating resistance (R_pore). Results of MD simulation showed that the flat or nearly flat orientation of the DGEBA-DAA-ZP adsorbed on the Cd surface behaved as efficient anti-corrosive material.

Keywords

Epoxy coating

electrolytic cadmium

composite

anticorrosive performance

15CDV6 steel and 3% NaCl.

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