In-situ XRD investigations of FeAl intermetallic phase-based alloy oxidation

Cebulski, J.; Pasek, Dorota; Bik, Maciej; Świerczek, Konrad; Jeleń, Piotr; Mroczka, K.; Dąbrowa, Juliusz; Zajusz, Marek; Wyrwa, Jan; Sitarz, Maciej

doi:10.1016/j.corsci.2019.108344

Cited by 13 publications

(3 citation statements)

References 53 publications

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“…Thus, it can be concluded that individual oxide structures such as CoO, Fe 2 O 3 , and Fe 3 O 4 are present in the Fe-Co composites. As in the previous samples, numerous bands for different forms of alumina from the support (251, 381, 415, 649, 460 and 747 cm −1 ) [35][36][37][38] and elemental carbon (1372, 1595 cm −1 ) [39] were also recorded.…”

Section: Characteristics Of Plasma-deposited Composites Based On Mixe...supporting

confidence: 68%

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Enhancing CO2 Conversion to CO over Plasma-Deposited Composites Based on Mixed Co and Fe Oxides

et al. 2021

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The hydrogenation of CO2 to produce CO and H2O, known as reverse-water-gas shift reaction (RWGS) is considered to be an important CO2 valorization pathway. This work is aimed at proposing the thin-film catalysts based on iron and cobalt oxides for this purpose. A series of Fe–Co nanocomposites were prepared by the plasma-enhanced chemical vapor deposition (PECVD) from organic cobalt and iron precursors on a wire-mesh support. The catalysts were characterized by SEM/EDX, XPS, XRD, and Raman spectroscopy and studied for hydrogenation of CO2 in a tubular reactor operating in the temperature range of 250–400 °C and atmospheric pressure. The Co-based catalyst, containing crystalline CoO phase, exhibited high activity toward CH4, while the Fe-based catalyst, containing crystalline Fe2O3/Fe3O4 phases, was less active and converted CO2 mainly into CO. Regarding the Fe–Co nanocomposites (incl. Fe2O3/Fe3O4 and CoO), even a small fraction of iron dramatically inhibited the production of methane. With increasing the atomic fraction of iron in the Fe–Co systems, the efficiency of the RWGS reaction at 400 °C increased up to 95% selectivity to CO and 30% conversion of CO2, which significantly exceeded the conversion for pure iron–based films (approx. 9%). The superior performance of the Fe–Co nanocomposites compared to “pure” Co and Fe–based films was proposed to be explained by assuming changes in the electronic structure of the catalyst resulting from the formation of p–n junctions between nanoparticles of cobalt and iron oxides.

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Section: Characteristics Of Plasma-deposited Composites Based On Mixe...supporting

confidence: 68%

“…474, 561 and 677 cm −1 that can be attributed to CoO phase [34]. Other bands at 249, 378, 417, 649 and 747 cm −1 are characteristic for alumina phases in the support [35][36][37][38].…”

Section: Characteristics Of Plasma-deposited Composites Based On Mixe...mentioning

confidence: 94%

Enhancing CO2 Conversion to CO over Plasma-Deposited Composites Based on Mixed Co and Fe Oxides

et al. 2021

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“…Material with a structure with the dominant share of ordered intermetallic phases from the Fe-Al system has properties that allow it to be used as a structural material for elements operating at elevated temperatures, often in an aggressive environment, as well as in one or many oxidants [2][3][4]. Research conducted by Kulak and Kupka [5] and other researchers [6,7] shows that resistance results from the formation of a passive aluminum oxide layer on the surface of the material. Additionally, alloys based on the FeAl intermetallic phase are characterized by resistance to abrasive, erosive and cavitation wear [8,9].…”

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confidence: 99%

Evaluation of Structure and Corrosion Behavior of FeAl Alloy after Crystallization, Hot Extrusion and Hot Rolling

et al. 2020

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The paper presents the results of tests on the corrosion resistance of Fe40Al5Cr0.2TiB alloy after casting, plastic working using extrusion and rolling methods. Examination of the microstructure of the Fe40Al5Cr0.2TiB alloy after casting and after plastic working was performed on an Olympus GX51 light microscope. The stereological relationships of the alloy microstructure in the state after crystallization and after plastic working were determined. The quantitative analysis of the structure was conducted after testing with the EBSD INCA HKL detector and the Nordlys II analysis system (Channel 5), which was equipped with the Hitachi S-3400N microscope. Structure tests and corrosion tests were performed on tests cut perpendicular to the ingot axis, extrusion direction, and rolling direction. As a result of the tests, it was found that the crystallized alloy has better corrosion resistance than plastically processed material. Plastic working increases the intensity of the electrochemical corrosion of the examined alloy. It was found that as-cast alloy is the most resistant to corrosion in a 5% NaCl compared with the alloys after hot extrusion and after hot rolling. The parameters in this study show the smallest value of the corrosion current density and corrosion rate as well as the more positive value of corrosion potential.

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Effect of zirconium on the corrosion behavior of FeAl40Ti3B intermetallic compounds for use in solar water heaters

Metidji,

Younes,

Allou

et al. 2023

J Appl Electrochem

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In-situ XRD investigations of FeAl intermetallic phase-based alloy oxidation

Cited by 13 publications

References 53 publications

Enhancing CO2 Conversion to CO over Plasma-Deposited Composites Based on Mixed Co and Fe Oxides

Enhancing CO2 Conversion to CO over Plasma-Deposited Composites Based on Mixed Co and Fe Oxides

Evaluation of Structure and Corrosion Behavior of FeAl Alloy after Crystallization, Hot Extrusion and Hot Rolling

Effect of zirconium on the corrosion behavior of FeAl40Ti3B intermetallic compounds for use in solar water heaters

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