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https://doi.org/10.5562/cca1943

Formation of Iron Oxides by Surface Oxidation of Iron Plate

Marijan Marciuš   ORCID icon orcid.org/0000-0002-4747-5981 ; Ruđer Bošković Institute, P. O. Box 180, HR-10002 Zagreb, Croatia
Mira Ristić   ORCID icon orcid.org/0000-0003-0033-9840 ; Ruđer Bošković Institute, P. O. Box 180, HR-10002 Zagreb, Croatia
Mile Ivanda ; Ruđer Bošković Institute, P. O. Box 180, HR-10002 Zagreb, Croatia
Svetozar Musić ; Ruđer Bošković Institute, P. O. Box 180, HR-10002 Zagreb, Croatia

Puni tekst: engleski, pdf (6 MB) str. 117-124 preuzimanja: 4.319* citiraj
APA 6th Edition
Marciuš, M., Ristić, M., Ivanda, M. i Musić, S. (2012). Formation of Iron Oxides by Surface Oxidation of Iron Plate. Croatica Chemica Acta, 85 (1), 117-124. https://doi.org/10.5562/cca1943
MLA 8th Edition
Marciuš, Marijan, et al. "Formation of Iron Oxides by Surface Oxidation of Iron Plate." Croatica Chemica Acta, vol. 85, br. 1, 2012, str. 117-124. https://doi.org/10.5562/cca1943. Citirano 23.01.2020.
Chicago 17th Edition
Marciuš, Marijan, Mira Ristić, Mile Ivanda i Svetozar Musić. "Formation of Iron Oxides by Surface Oxidation of Iron Plate." Croatica Chemica Acta 85, br. 1 (2012): 117-124. https://doi.org/10.5562/cca1943
Harvard
Marciuš, M., et al. (2012). 'Formation of Iron Oxides by Surface Oxidation of Iron Plate', Croatica Chemica Acta, 85(1), str. 117-124. https://doi.org/10.5562/cca1943
Vancouver
Marciuš M, Ristić M, Ivanda M, Musić S. Formation of Iron Oxides by Surface Oxidation of Iron Plate. Croatica Chemica Acta [Internet]. 2012 [pristupljeno 23.01.2020.];85(1):117-124. https://doi.org/10.5562/cca1943
IEEE
M. Marciuš, M. Ristić, M. Ivanda i S. Musić, "Formation of Iron Oxides by Surface Oxidation of Iron Plate", Croatica Chemica Acta, vol.85, br. 1, str. 117-124, 2012. [Online]. https://doi.org/10.5562/cca1943

Sažetak
Oxidation of iron plates (α-phase) at high temperatures and in atmospheric conditions was monitored. The composition of oxidation products was analyzed with XRD, Raman and Mössbauer spectros-copies, whereas the morphologies of oxidation products were inspected by FE-SEM. The oxidation products formed at 300 and 400 °C consisted dominantly of magnetite and small fractions of hematite, whereas at 500 and 600 °C hematite was the dominant phase, as shown by XRD. In all these samples Raman spectra showed the presence of hematite in the outer oxidation layer. FE-SEM analysis showed the formation of nanowires at 500 °C and vertically grown hematite spikes against the lower oxidation layers at 600 °C. Oxidation products formed at 800 °C consisted of wüstite (Fe1–xO) as the dominant phase, nonstoichiometric magnetite (Fe3–xO4) and hematite (α-Fe2O3) in small fractions. The surface of these oxidation layers showed a hierarchical microstructure, as well as the hexagonal hematite rods vertically grown against the lower oxidation layers. The formation of the oxidation products can be considered a process which includes the oxidation of α-Fe to Fe1–xO and its transformation to Fe3–xO4 that further transforms to α-Fe2O3, probably via a short-lived γ-Fe2O3 (maghemite) phase. (doi: 10.5562/cca1943)

Ključne riječi
corrosion; α-Fe; hematite; magnetite; wüstite

Hrčak ID: 80449

URI
https://hrcak.srce.hr/80449

Posjeta: 4.675 *