Corrosion inhibition of steel in 3.5% NaCl by rice straw extract

Norinsan Kamil Othman, S. Yahya, M. C. Ismail

Research output: Contribution to journalArticle

Abstract

Inhibition of steel corrosion in 3.5% sodium chloride (NaCl) by rice straw extract (RSE) was studied via weight loss method up to 42 days immersion. The corrosion inhibition efficiency (IE) showed a consistent value with the highest IE of 92% and low corrosion rate, 0.013 mm/y. RSE was able to reduce pitting corrosion by presenting small hysteresis loop via cyclic polarization measurement. The formation of ferric-RSE layer due to complexation was confirmed via surface analysis. The presence of corrosion products on steel was significantly reduced by immersion in RSE. The inhibitory mechanism was proposed to be achieved through interphase inhibition.

Original languageEnglish
Pages (from-to)299-310
Number of pages12
JournalJournal of Industrial and Engineering Chemistry
Volume70
DOIs
Publication statusPublished - 25 Feb 2019

Fingerprint

Steel
Straw
Corrosion
Steel corrosion
Surface analysis
Sodium chloride
Hysteresis loops
Pitting
Corrosion rate
Complexation
Sodium Chloride
Polarization

Keywords

  • Corrosion inhibitor
  • Interphase inhibition
  • Plant extract
  • Steel
  • Weight loss

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Corrosion inhibition of steel in 3.5% NaCl by rice straw extract. / Othman, Norinsan Kamil; Yahya, S.; Ismail, M. C.

In: Journal of Industrial and Engineering Chemistry, Vol. 70, 25.02.2019, p. 299-310.

Research output: Contribution to journalArticle

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