Effects of water vapour on isothermal oxidation of chromia-forming alloys in Ar/O2 and Ar/H2 atmospheres

Norinsan Kamil Othman, N. Othman, J. Zhang, D. J. Young

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

Fe9Cr, Fe17Cr and Fe25Cr alloys were subjected to isothermal oxidation in Ar/O2 and Ar/H2 atmosphere at 700 °C as high temperature corrosion for 48 h. Oxidation weight change measurement showed increasing Cr content reduced the oxidation rate. The oxidized Cr alloys were analysed using SEM, TEM and XRD. The addition of water vapour accelerates the onset of breakaway oxidation kinetics for Fe9Cr. The presence of water vapour promotes internal oxidation of Cr within Fe9Cr. For Fe17Cr and Fe25Cr, the water vapour effect is not significant due to the large Cr reservoir due to continue growth of Cr2O3.

Original languageEnglish
Pages (from-to)3039-3049
Number of pages11
JournalCorrosion Science
Volume51
Issue number12
DOIs
Publication statusPublished - Dec 2009

Fingerprint

Steam
Water vapor
Oxidation
Internal oxidation
Corrosion
Transmission electron microscopy
Scanning electron microscopy
Kinetics
Temperature

Keywords

  • A. Alloy
  • B. SEM
  • B. TEM
  • B. XRD
  • C. High temperature corrosion
  • C. Oxidation

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Effects of water vapour on isothermal oxidation of chromia-forming alloys in Ar/O2 and Ar/H2 atmospheres. / Othman, Norinsan Kamil; Othman, N.; Zhang, J.; Young, D. J.

In: Corrosion Science, Vol. 51, No. 12, 12.2009, p. 3039-3049.

Research output: Contribution to journalArticle

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