Auger electron spectroscopy analysis of chromium depletion in a model Ni-16Cr-9Fe alloy oxidized at 950 °C

SCRIPTA MATERIALIA

卷:65

Article

Nicolas, Andre^1,2,3  Barnier, Vincent¹  Aublant, Edwige²  Wolski, Krzysztof¹ 

[1] Ecole Mines St Etienne, CNRS, Lab Claude Goux, Ctr SMS,UMR 5146, F-42023 St Etienne, France

[2] AREVA NP, Ctr Tech, Dept Corros Chim, F-71200 Le Creusot, France

[3] Univ Lyon, ENISE, LTDS, UMR 5513, F-42023 St Etienne, France

关键词: Oxidation;    Auger electron spectroscopy (AES);    Nickel alloys;    Interface diffusion;    Chromium depletion;   

DOI  :  10.1016/j.scriptamat.2011.07.036

来源: Elsevier

【 摘 要 】

A complete chromium depletion profile with its depth resolution in the nanometre range was obtained on a Ni-16Cr-9Fe model alloy after a 10 h oxidation at 950 degrees C in air. Auger electron spectroscopy coupled to ion sputtering and energy-dispersive X-ray spectroscopy were used to measure the chromium depletion profile. The chromium content at the oxide/alloy interface is below 0.5 wt.%. This exceptionally low Cr content is in agreement with Wagner's model for binary alloys. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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