XPS study of oxides formed on the surface of high-purity iron exposed to air

Shigeru Suzuki, Katsuyuki Yanagihara, Kichinosuke Hirokawa

Research output: Contribution to journalConference articlepeer-review

44 Citations (Scopus)

Abstract

Angle-resolved XPS and micro-XPS have been used for characterizing reaction products consisting of oxide and oxyhydroxide formed on the surface of high-purity iron exposed to air at room temperature for a long time. Angle-resolved measurements of O 1s XPS spectra have shown that an oxyhydroxide layer covers a native oxide layer in the nanometric thickness range formed on the iron surface. Moreover, imaging by micro-XPS has indicated that fine reaction products, which are oxyhydroxides, are heterogeneously formed on the iron surface by exposure to air for a long time. Based on these results, it is considered that initial oxidation occurs on the iron surface uniformly, and the fine reaction products nucleate at some areas and grow during further air exposure.

Original languageEnglish
Pages (from-to)372-376
Number of pages5
JournalSurface and Interface Analysis
Volume30
Issue number1
DOIs
Publication statusPublished - 2000 Aug 1
Externally publishedYes
Event8th European Conference on Applications of Surface and Interface Analisys, ECASIA 99 - Sevilla, Spain
Duration: 1999 Oct 41999 Oct 8

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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