Selective Oxidation of Chromium by O-2 Impurities in CO2 During Initial Stages of Oxidation

Abstract : This study shows that the corrosion behaviour of 12 wt% Cr steel in CO2 at 550 A degrees C is determined in the first stage of oxidation by reaction with O-2 impurities. Depending on the amount of theses impurities and the thermal ramp rate, selective oxidation of chromium could lead to the formation of a protective chromium-rich oxide. An oxidation model describing qualitatively the nature of the oxide layer formed in the initial period of oxidation is presented. From these observations, surface engineering processes for protecting 9-12 wt% chromium steels from fast corrosion rate have emerged.
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https://hal-emse.ccsd.cnrs.fr/emse-00957583
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Submitted on : Monday, March 10, 2014 - 4:25:41 PM
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Soraya Bouhieda, Fabien Rouillard, Vincent Barnier, Krzysztof Wolski. Selective Oxidation of Chromium by O-2 Impurities in CO2 During Initial Stages of Oxidation. Oxidation of Metals, Springer Verlag, 2013, 80 (Issue : 5-6), pp.493-503. ⟨10.1007/s11085-013-9392-0⟩. ⟨emse-00957583⟩

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