Initial oxidation of Fe-Al and Fe-Cr-Al alloys: Cr as an alumina booster
| Autor: | Heinonen, Markku, Kokko, Kalevi, Punkkinen, Marko, Nurmi, Eero, Kollár, Janos, Vitos, Levente |
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| Rok vydání: | 2011 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | The boosting effect of Cr on the growth of the protective alumina scale on Fe-Al alloys is investigated by x-ray photoelectron spectroscopy. Using low oxygen pressure the surface chemistry of the alloys is monitored starting from the first moments of oxidation. Chromium effect on the Fe-Al surface-bulk exchange is clearly detected by analyzing the measured surface concentrations within the atomic concentration models. Previous ab initio calculations agree well with the present experiments. Comment: 9 pages, 6 figures |
| Databáze: | arXiv |
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