Enhanced diffusion and precipitation in Cu : In alloys due to low energy ion bombardment
| Autor: | I.D. Ward, L. Rivaud, A. H. Eltoukhy, J. E. Greene |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
Supersaturation
Auger electron spectroscopy Materials science Precipitation (chemistry) Diffusion Analytical chemistry Surfaces and Interfaces Condensed Matter Physics Ion Surfaces Coatings and Films Sputtering Scanning transmission electron microscopy Materials Chemistry Grain boundary Physics::Atmospheric and Oceanic Physics |
| Zdroj: | Surface Science Letters. 102:A20 |
| ISSN: | 0167-2584 |
| DOI: | 10.1016/0167-2584(81)90407-2 |
| Popis: | The effects of low energy Ar + ion bombardment on supersaturated Cu: 10at%-In alloys at room temperature were investigated using scanning transmission electron microscopy and Auger electron spectroscopy. Both 1 and 3 keV Ar + bombardment resulted in the preferential sputter removal of In. The surface and altered layer remained supersaturated however, and ion bombardment enhanced diffusion was sufficient to allow the precipitation of In-rich δ-phase (~30 at% In) particles in the near-surface region. The average precipitate size and number density in samples bombarded with 3 keV Ar + ions were ~200 A and 10 10 cm −2 as compared to 150 A and 10 9 cm −2 in samples bombarded at 1 keV. The ion bombardment induced precipitates nucleated within the grains rather than, as was observed for thermally induced precipitates, at grain boundaries. |
| Databáze: | OpenAIRE |
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