Oxygen‐induced surface segregation of hydrogen in polycrystalline titanium

A. Azoulay, U. Atzmony, M. H. Mintz, N. Shamir

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Oxygen‐induced surface segregation of hydrogen has been investigated in polycrystalline titanium. It was found that sulphur impurities in titanium preferentially segregate to the surface on heating the sample. Consequently, the properties and reactivity of the sulphur‐containing surfaces were modified relative to sulphur‐free samples in a way which enabled the performance of quantitative kinetic segregation measurements utilizing direct recoil spectrometry (DRS). The time behaviour of hydrogen accumulation on the surface pointed to a segregation mechanism involving subsurface‐to‐surface hopping as the rate‐determining step.

Original languageEnglish
Pages (from-to)643-649
Number of pages7
JournalSurface and Interface Analysis
Volume18
Issue number9
DOIs
StatePublished - 1 Jan 1992

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Oxygen‐induced surface segregation of hydrogen in polycrystalline titanium'. Together they form a unique fingerprint.

Cite this