Corrosion performance of coating thickness in marine environment

H. M. Hajar, M. J. Suriani, M. G M Sabri, Mariyam Jameelah Ghazali, W. B. Wan Nik

Research output: Contribution to journalArticle

Abstract

Traditionally, zinc has been used as metallic material to protect steel against atmospheric corrosion. The coatings are used for corrosion protection in a variety of industrial applications. This is due to its ability to provide cathodic protection to steel in all types of natural atmospheres. In the effort of determining the optimum coating thickness, a comparative study of the corrosion on mild steel coated by different thickness of zinc in marine environment was carried out. This paper presents the corrosion study of two marine environment which are immersion in seawater and also in salt spray splash environment. The aim of this study is to compare by experiment the corrosion rate of mild steel coated by different thickness of zinc under salt spray and also immersion. The corrosion measurement test was performed by weight loss measurement, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques. The morphological study on the surface degradation of the coated steel was performed by using scanning electron microscopy (SEM). The investigation on corrosion rate for the salt spray test shows higher loss percentage compared to seawater immersion. The bare mild steel recorded the highest corrosion rate compared to the other coated mild steel in both environments.

Original languageEnglish
Pages (from-to)71-76
Number of pages6
JournalBiosciences Biotechnology Research Asia
Volume12
Issue number1
DOIs
Publication statusPublished - 1 Apr 2015

Fingerprint

Corrosion
corrosion
Steel
marine environment
coatings
steel
Immersion
Zinc
Salts
zinc
Seawater
salts
seawater
dielectric spectroscopy
Dielectric Spectroscopy
industrial applications
Atmosphere
Electron Scanning Microscopy
Weight Loss
scanning electron microscopy

Keywords

  • Marine environment
  • Mild steel
  • Potentiodynamic polarization
  • SEM
  • Zinc coating

ASJC Scopus subject areas

  • Biotechnology
  • Agronomy and Crop Science
  • Drug Discovery

Cite this

Corrosion performance of coating thickness in marine environment. / Hajar, H. M.; Suriani, M. J.; Sabri, M. G M; Ghazali, Mariyam Jameelah; Wan Nik, W. B.

In: Biosciences Biotechnology Research Asia, Vol. 12, No. 1, 01.04.2015, p. 71-76.

Research output: Contribution to journalArticle

Hajar, H. M. ; Suriani, M. J. ; Sabri, M. G M ; Ghazali, Mariyam Jameelah ; Wan Nik, W. B. / Corrosion performance of coating thickness in marine environment. In: Biosciences Biotechnology Research Asia. 2015 ; Vol. 12, No. 1. pp. 71-76.
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