Effect of red palm oil as a natural corrosion inhibitor toward carbon steel and mild steel in 1 M of hydrochloric acid solution

Translated title of the contribution: Kesan minyak sawit merah sebagai perencat kakisan tabii terhadap keluli karbon dan keluli lembut dalam 1 m asid hidroklorik (HCL

Siti Rahimah Mohamad Shafiee, Airul Ashri, Muhammad Yusri Zulkafli, Norinsan Kamil Othman, Mohamad Azwani Shah Mat Lazim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The utilization of natural corrosion inhibitor is an alternative of the uses of synthetic corrosion inhibitors and non-organic inhibitors.The selection of red palm oil as a natural corrosion inhibitor is because the oil rich in beta-carotene molecules and vitamin E contains in the oil is high in antioxidant properties. Beside that, the presences of heteroatom molecules in red palm oil will give better adsorption on the surface of the steel and thus prevent corrosion. This research is carried out to investigate the effectiveness of using red palm oil as corrosion inhibitor for mild steel and carbon steel in 1 M hydrochloric acid solution. The aim of this research is to identify the functional group in the red palm oil and perform morphological analysis on the steel surface after being immersed in medium solution with inhibitor and medium solution without inhibitor. Based on weight loss and Tafel polarization method, both steels undergone the reduction in rate of corrosion and the efficiency of inhibitor increased with the addition of red palm oil. Based on the image captured by Scanning Electron Microscope, it is clearly showed that the surface of steel coated with red palm oil is less corroded compared to uncoated steel. The characterization of red palm oil using instruments such as Fourier Transform Infrared Spectrometer (FTIR) and Gas chromatography (GC) has prove the existence of a few heteroatom molecules that acts as an adsorbent on the surface of the steel.

Original languageMalay
Pages (from-to)679-691
Number of pages13
JournalMalaysian Journal of Analytical Sciences
Volume19
Issue number4
Publication statusPublished - 20 Aug 2015

Fingerprint

Steel
Corrosion inhibitors
Molecules
Carbon steel
Oils
Corrosion
Infrared spectrometers
Hydrochloric Acid
beta Carotene
palm oil
Vitamin E
Gas chromatography
Adsorbents
Functional groups
Fourier transforms
Electron microscopes
Antioxidants
Polarization
Scanning
Adsorption

Keywords

  • Carbon steel
  • Corrosion inhibitor
  • Mild steel
  • Red palm oil

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Effect of red palm oil as a natural corrosion inhibitor toward carbon steel and mild steel in 1 M of hydrochloric acid solution. / Mohamad Shafiee, Siti Rahimah; Ashri, Airul; Zulkafli, Muhammad Yusri; Othman, Norinsan Kamil; Mat Lazim, Mohamad Azwani Shah.

In: Malaysian Journal of Analytical Sciences, Vol. 19, No. 4, 20.08.2015, p. 679-691.

Research output: Contribution to journalArticle

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