Oxidation properties of Zr-Nb alloys at 500-600°C under low oxygen potentials

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Zr-Nb alloys with 1-10wt.% Nb content were oxidized at 500-600°C in the CO-CO2 gas mixtures. The oxidation weight gain increased with Nb content and the kinetics except for Zr-1Nb alloy changed from cubic rate to linear one at 600°C for a long period of time, 7d. The cubic rate constant was almost insensitive to oxygen potential of oxidizing atmosphere. As the oxidation resistance deteriorated, the volume ratio of tetragonal to monoclinic zirconia phase and the relevant compressive stress in oxide film decreased with increase of Nb content. Before and after oxidation, Nb re-distribution could not be observed under the present experimental condition.

Original languageEnglish
Pages (from-to)435-446
Number of pages12
JournalCorrosion Science
Volume47
Issue number2
DOIs
Publication statusPublished - Feb 1 2005

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Oxygen
Oxidation
Oxidation resistance
Carbon Monoxide
Compressive stress
Gas mixtures
Zirconia
Oxide films
Rate constants
Kinetics
zirconium oxide

All Science Journal Classification (ASJC) codes

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

Cite this

Oxidation properties of Zr-Nb alloys at 500-600°C under low oxygen potentials. / Arima, Tatsumi; Miyata, Kensaku; Inagaki, Yaohiro; Idemitsu, Kazuya.

In: Corrosion Science, Vol. 47, No. 2, 01.02.2005, p. 435-446.

Research output: Contribution to journalArticle

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