In situ X-ray diffraction of surface oxide on type 430 stainless steel in breakaway condition using synchrotron radiation

Isao Saeki, Yusuke Sugiyama, Shigenari Hayashi, Akira Yamauchi, Takashi Doi, Yoshitaka Nishiyama, Shoji Kyo, Shigeru Suzuki, Masugu Sato, Shinji Fujimoto

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Changes in the crystal structure of type 430 stainless steel and the oxides on its surface were studied in situ at 1373K using a high-intensity synchrotron X-ray source provided by SPring-8 in Japan. The surface of the steel was initially covered with Cr 2O 3, which was then converted to FeCr 2O 4, and finally Fe 3O 4 and Fe 2O 3 formed on it. These results indicated that the reason for the breakaway oxidation in type 430 stainless steel is Cr depletion beneath Cr 2O 3 layer and the subsequent ionisation of Fe, not the simple mechanical failure of Cr 2O 3.

Original languageEnglish
Pages (from-to)219-225
Number of pages7
JournalCorrosion Science
Volume55
DOIs
Publication statusPublished - 2012 Feb 1

Keywords

  • A. Stainless steel
  • B. XRD
  • C. High temperature corrosion
  • C. Oxidation

ASJC Scopus subject areas

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

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