Mass loss of Cr2O3 during exposure to steam at 923 K and its suppression by sulfur doping

Yoshinori Murata, Masahiko Morinaga, Nobuaki Inagaki, Masaaki Nakai

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Mass loss occurs in Cr2O3 when it is exposed to steam at 923 K for 0.5 Ms or 1.3 Ms. The presence of S at an impurity level of 23 ppm in the oxide suppresses the mass loss by about a half. For example, for the 0.5 Ms exposure, the mass loss is about 0.055% in pure Cr2O3 but about 0.030% in S-doped Cr2O3. This result is related closely to our previous result that the existence of 50 ppm S in high Cr ferritic steels causes a tremendous improvement in the steam oxidation resistance at 923 K.

Original languageEnglish
Pages (from-to)1258-1259
Number of pages2
JournalMaterials Transactions
Volume43
Issue number5
DOIs
Publication statusPublished - 2002 May

Keywords

  • CrO
  • Impurity
  • Oxide
  • Steam oxidation
  • Sulfur

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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