Initial oxidation of Fe-Al and Fe-Cr-Al alloys: Cr as an alumina booster

2011/02/04 by Markku Heinonen, Heinonen, Markku, K. Kokko +9 · 1 citation
Engineering · Materials Science · #Catalytic Processes in Materials Science #FOS: Physical sciences #High-Temperature Coating Behaviors #Materials Science (cond-mat.mtrl-sci) #Nuclear Materials and Properties

paper · pdf · doi:10.48550/arxiv.1102.0912

openalex publication_date 2011/02/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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.

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