Identification by photoelectrochemistry of oxide phases grown during the initial stages of thermal oxidation of AISI 441 ferritic stainless steel in air or in water vapour
Source abstract
Abstract
Abstract Room temperature photoelectrochemistry was used to characterise oxide phases grown during the initial stages of oxidation of the ferritic stainless steel AISI441 at 650°C and 850°C in synthetic air or in water vapour. Grazing incidence X-ray diffraction and Raman spectroscopy were additionally used to discuss PEC results. Haematite Fe2O3 (∼2.0 eV), chromia Cr2O3 (3.0 and 3.5 eV) and their mutual solid solution (∼ 2.5 eV) were detected by their respective bandgap values determined from photocurrent vs. energy curves. The Cr/Fe ratio of the films increased with time/temperature and was higher in air-grown than in H2O-grown oxides. Observation of photocurrent vs. potential curves indicated that chromia was N-type in all specimens, resulting from thermodynamic equilibrium with the metallic substrate and not with the gas phase.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Hydrogen embrittlement and corrosion behaviors in metals · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
Show source-provided references
1. Oxidation kinetics and phase evolution of a Fe–16Cr alloy in simulated SOFC cathode atmosphere10.1016/j.jpowsour.2005.09.056 ↗
2. Effects of water vapor on oxidation behavior of ferritic stainless steels under solid oxide fuel cell interconnect exposure conditions10.1016/j.ssi.2005.03.019 ↗
3. Oxidation of AISI 304 and AISI 439 stainless steels10.1016/j.msea.2006.10.022 ↗
4. Thermal oxidation kinetics and oxide scale adhesion of Fe–15Cr alloys as a function of their silicon content10.1016/j.actamat.2006.04.023 ↗
5. Anomalous temperature dependence of oxidation kinetics during steam oxidation of ferritic steels in the temperature range 550–650°C10.1016/j.corsci.2004.01.010 ↗
6. Influence of the oxidation environment on the scale morphology and the oxidation rate of Fe–22Cr10.3184/096034005782744362 ↗
7. High temperature oxidation/corrosion behavior of metals and alloys under a hydrogen gradient10.1016/j.ijhydene.2006.08.056 ↗
8. The effect of the oxidation atmosphere on the initial oxidation of type 430 stainless steel at 1273K10.1016/S0010-938X(97)00113-3 ↗
9. The initial oxidation of type 430 stainless steel in O2–H2O–N2 atmosphere at 1273K10.1016/0010-938X(96)00093-5 ↗
10. Semiconductor properties and protective role of passive films of iron base alloys10.1016/j.corsci.2006.05.020 ↗
11. The influence of copper and chromium on the semiconducting behaviour of passive films formed on weathering steels10.1016/j.tsf.2006.05.011 ↗
12. Influence of oxidation time on semiconductive behaviour of thermally grown oxide films on AISI 304L10.1016/j.apsusc.2005.06.036 ↗
13. Comparative study and imaging by photoelectrochemical techniques of oxide films thermally grown on zirconium and Zircaloy-410.1016/j.jnucmat.2006.10.001 ↗
14. Characterization of chromia scales grown on pure chromium in different oxidizing atmospheres10.3184/096034000783640866 ↗
15. Study of the thermal oxidation of Fe–15 Cr by combined Raman and photoelectrochemical imaging10.4028/www.scientific.net/MSF.461-464.681 ↗
16. Characterization of the oxides formed at 1000°C on the AISI 304 stainless steel by X-ray diffraction and infrared spectroscopy10.1016/j.apsusc.2007.09.018 ↗
17. High-pressure study of Cr2O3 obtained by high-temperature oxidation by X-ray diffraction and Raman spectroscopy10.1016/S0022-3697(00)00215-8 ↗
18. Photoelectrochemical study of oxides thermally grown on titanium in oxygen or water vapour atmospheres10.1149/1.2768299 ↗
19. Evolution of near-surface concentration profiles of Cr during annealing of Fe–15Cr polycrystalline alloy10.1016/j.apsusc.2004.11.078 ↗
20. Mechanisms of chromia scale failure during the course of 15-18Cr ferritic stainless steel oxidation in water vapour10.3184/096034005782750527 ↗
21. Effect of chromium on the formation of chromia rich oxide films on Fe–Cr alloys at elevated temperatures
22. Diffusion of iron in Cr2O3 polycrystals and thin films10.1016/j.msea.2004.09.033 ↗
23. J. Mougin, Tenue mécanique de couche d’oxyde thermique générées sur le chrome et sur quelques aciers inoxydables ferritiques, PhD Thesis, Institut National Polytechnique de Grenoble, France, 2001 (in French).
24. Nonstoichiometry in oxides and its control10.1016/j.jssc.2006.06.012 ↗
25. Photoelectrochemical characterization of chromia scales thermally grown on various metal substrate
26. The equilibrium between water vapour, protons, and oxygen vacancies in rare earth oxides10.1016/S0167-2738(97)00086-6 ↗
27. L. Marchetti-Sillans, Corrosion généralisée des alliages à base nickel en milieu aqueux à haute température: apport à la compréhension des mécanismes, PhD Thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, France, 2007 (in French).