Non-destructive evaluation of alumina scale on heat-resistant steels using cathodoluminescence and X-ray-excited optical luminescence

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11 Citations (Scopus)

Abstract

We propose a non-destructive measurement method to identify Al 2 O 3 scale on an Fe–Al alloy and to evaluate the morphology and thickness of the scale using cathodoluminescence (CL)and X-ray-excited optical luminescence (XEOL). CL and XEOL images allowed us to distinguish the Al 2 O 3 scale from other scales from the luminescent color of the Al 2 O 3 , and to observe the surface morphology of the scale. The CL intensity of a peak at 695 nm in the spectra was used to determine the scale thickness. Therefore, CL and XEOL analysis could be used in the non-destructive evaluation of oxide scales on heat-resistant steels.

Original languageEnglish
Pages (from-to)226-230
Number of pages5
JournalCorrosion Science
Volume154
DOIs
Publication statusPublished - 2019 Jul 1

Keywords

  • A. Alloy
  • A. Steel
  • C. High temperature corrosion
  • C. Oxidation
  • C. Oxide coating

ASJC Scopus subject areas

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

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