Surface segregation in an Ir-2%Pt alloy studied using Auger electron spectroscopy

The surface segregation in an Ir-2%Pt alloy has been studied using Auger electron spectroscopy. The variation of the probing depth with Auger electron energy was utilized for estimating the in-depth segregation profile. After annealing at 950°C and cooling to room temperature, Auger spectra were rec...

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Bibliographic Details
Published in:Applied surface science 1986, Vol.27 (2), p.235-246
Main Authors: Hörnström, Sven Erik, Johansson, Leif I.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Equations of state, phase equilibria, and phase transitions
Exact sciences and technology
Materials science
Metals, semimetals and alloys
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
Solubility, segregation, and mixing
phase separation
Specific materials
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Summary:The surface segregation in an Ir-2%Pt alloy has been studied using Auger electron spectroscopy. The variation of the probing depth with Auger electron energy was utilized for estimating the in-depth segregation profile. After annealing at 950°C and cooling to room temperature, Auger spectra were recorded in five different kinetic energy regions. The quantitative analysis of four of these spectra was performed using computer added spectra from pure Ir and Pt. A strong segregation of Pt to the surface layer was observed.
ISSN:0169-4332
1873-5584
DOI:10.1016/0169-4332(86)90109-1