The surface cation densities of iron oxide-chromium oxide solid solutions

Mayfair Kung*, Harold H Kung

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

The surface cation densities of FexCr2 - xO3 solid solutions were determined for x = 0.5, 1, and 1.5 using Auger Electron Spectroscopy on samples that had been equilibrated in air at 798 or 973 K. Cr(VI) was found to be present on the surface by iodometric titration. The results indicated that the Cr(VI) Cr(III) ratio was constant, independent of composition. Compared to the bulk densities, Fe was found to be enriched on the surface for x = 0.5 and 1, but depleted for x = 1.5.

Original languageEnglish (US)
Pages (from-to)253-269
Number of pages17
JournalSurface Science
Volume104
Issue number1
DOIs
StatePublished - Mar 1 1981

ASJC Scopus subject areas

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

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