Interaction of O2 with the Fe0.84Cr0.16(001) surface studied by photoelectron spectroscopy

Lince, Jeffrey R.; Didziulis, Stephen V.; Shuh, David K.; Durbin, Thomas D.; Yarmoff, J. A.

doi:10.1016/0167-2584(92)90116-m

Cited by 8 publications

(9 citation statements)

References 42 publications

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“…Up to now, few compositional and structural studies have been performed on single-crystalline SS surfaces. [9][10][11][12][13][14][15] As for STM investigations on SSs, none of them addressed the detailed mechanisms of initial oxidation starting from an oxide-free surface.…”

Section: Introductionmentioning

confidence: 99%

Origin of nanoscale heterogeneity in the surface oxide film protecting stainless steel against corrosion

Wiame

Maurice

et al. 2019

npj Mater Degrad

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Stainless steels are widely used as metal components owing to self-protection in aggressive environments, provided by an extremely thin surface oxide film enriched in chromium oxide. Yet, despite decades of research, the mechanisms distributing the chromium enrichment at small length scale are poorly understood, although it may cause loss of stability and local failure of the corrosion resistance. Here, we apply high resolution surface analysis to investigate at small time and length scales the nucleation and growth mechanisms of the surface oxide on a model stainless steel. Starting from an oxide-free surface, we report the direct observation of the oxide nucleation and local oxidation of chromium, which governs the nanoscale heterogeneity of the growing surface oxide by chromium pumping from the atomic terraces to the steps for preferential Cr(III) oxide nucleation and subsequently by segregation from the atomic planes below to grow the Cr(III) layer incompletely saturating the stainless steel surface. This work provides new insight on corrosion chemistry, by evidencing local chemical and structural defects self-generated at the nanoscale by the building process of the protective oxide barrier, and affecting the passive film stability.

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Section: Introductionmentioning

confidence: 99%

Origin of nanoscale heterogeneity in the surface oxide film protecting stainless steel against corrosion

Wiame

Maurice

et al. 2019

npj Mater Degrad

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“…Although previous studies [16,19,20,22,24] have shown that no abrupt interface is formed between oxide and metal, layered models have been widely applied to describe the stratification of oxidized surfaces and quantify their composition. In this work, we have performed comparative analysis of the XPS intensities measured at 45…”

Section: Layered Surface Compositionmentioning

confidence: 99%

New insight on early oxidation stages of austenitic stainless steel from in situ XPS analysis on single-crystalline Fe–18Cr–13Ni

Wiame

Maurice

et al. 2018

Corrosion Science

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In situ X-ray photoelectron spectroscopy real-time measurements and angular-dependent high resolution core level analysis were used for the first time to investigate the Cr enrichment and oxide growth mechanisms on a model 304 austenitic stainless steel surface in the very initial stages of oxidation leading to pre-passivation. The oxidation kinetics was followed for increasing oxygen exposure and temperature, revealing an early nucleation regime (for exposure < 10 L) leading to the formation of a strongly Cr-enriched Cr 3+ /Fe 3+ mixed layer followed by an oxide growth regime where preferential iron oxidation takes over and mitigate the initial chromium enrichment.

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“…The most remarkable and distinct property of the stainless steels is their corrosion-resistant surface 1 . The corrosion resistivity is due to the protective, self-healing oxide layer, which has a complex structure containing , and oxides 2 – 4 . In ferritic steels the corrosion rate drops dramatically when their chromium concentration increases to 9–10 at% 5 , and the steels become regarded as stainless.…”

Section: Introductionmentioning

confidence: 99%

“…Busch et al focused on molecular oxygen on the Fe surface, whereas Getzlaff et al focused on the atomic oxygen on the Fe surface. Initial oxidation of Fe–Cr has also been studied by medium-energy ion scattering (MEIS), Mössbauer and X-ray photoelectron spectroscopy (XPS) 2 , 22 , 23 .…”

Section: Introductionmentioning

confidence: 99%

Oxygen adsorption on (100) surfaces in Fe–Cr alloys

Ropo

Punkkinen

Kuopanportti

et al. 2021

Sci Rep

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The adsorption of oxygen on bcc Fe–Cr(100) surfaces with two different alloy concentrations is studied using ab initio density functional calculations. Atomic-scale analysis of oxygen–surface interactions is indispensable for obtaining a comprehensive understanding of macroscopic surface oxidation processes. Up to two chromium atoms are inserted into the first two surface layers. Atomic geometries, energies and electronic properties are investigated. A hollow site is found to be the preferred adsorption site over bridge and on-top sites. Chromium atoms in the surface and subsurface layers are found to significantly affect the adsorption properties of neighbouring iron atoms. Seventy-one different adsorption geometries are studied, and the corresponding adsorption energies are calculated. Estimates for the main diffusion barriers from the hollow adsorption site are given. Whether the change in the oxygen affinity of iron atoms can be related to the chromium-induced charge transfer between the surface atoms is discussed. The possibility to utilize the presented theoretical results in related experimental research and in developing semiclassical potentials for simulating the oxidation of Fe–Cr alloys is addressed.

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Interaction of O2 with the Fe0.84Cr0.16(001) surface studied by photoelectron spectroscopy

Cited by 8 publications

References 42 publications

Origin of nanoscale heterogeneity in the surface oxide film protecting stainless steel against corrosion

Origin of nanoscale heterogeneity in the surface oxide film protecting stainless steel against corrosion

New insight on early oxidation stages of austenitic stainless steel from in situ XPS analysis on single-crystalline Fe–18Cr–13Ni

Oxygen adsorption on (100) surfaces in Fe–Cr alloys

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