The corrosion resistance of mild steel submerged in seawater prior to coating and following the application of Asian paint

Kannan  Rajalakshmi; 2; 3; 4; Rajendran Susai; 6; 7

doi:10.62638/ZasMat1819

Authors

Kannan Rajalakshmi Sakthi College of Arts and Science for Women, Oddanchatram, Dindigul, India Author
Ramasamy Thenmozhi Sakthi College of Arts and Science for Women, Oddanchatram, Dindigul, India Author
Joseph Antony Lisa Sakthi College of Arts and Science for Women, Oddanchatram, Dindigul, India Author
Thangarajan Umamathi Department of Chemistry, Sri Meenakshi Government College, for Women (A), Madurai, Tamil Nadu, India Author https://orcid.org/0000-0002-8813-6345
Rajendran Susai Research Director, Corrosion Research Centre, St Antony’s College of Arts and Sciences, Dindigul, India (Affiliated to Mother Teresa Women’s University, Kodaikanal, India) Author
Abdulhameed Al-Hashem Principal Scientist, Petroleum Research Centre, Kuwait Institute for Scientific Research, Kuwait Author
Caslav Lacnjevac Faculty of Agriculture, University of Belgrade, Serbia Author https://orcid.org/0000-0003-0650-8625

DOI:

https://doi.org/10.62638/ZasMat1819

Abstract

The corrosion resistance of mild steel submerged in seawater has been assessed through polarization studies, both prior to and following the application of Asian paint. The results of this evaluation will contribute to advancements in shipping technology. Key corrosion parameters, including corrosion potential (E_corr), Tafel slopes (β_cfor cathodic and β_a for anodic), linear polarization resistance (LPR), and corrosion current (I_corr), have been determined. In the study of polarization, fundamental principles indicate that an increase in corrosion resistance corresponds with a rise in linear polarization resistance (LPR) and a decrease in corrosion current (I_corr). The findings of this research lead to several conclusions. Asian paints can be applied to hull plates constructed from mild steel to mitigate corrosion, particularly since these plates are consistently exposed to seawater. The surface morphology has been analysed by SEM. The results are in agreement with the results of the polarisation study.

Keywords:

Corrosion resistance, mild steel , seawater , before coating , after coating Asian paint

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