Scherf, A. ; Janda, D. ; Baghaie Yazdi, M. ; Li, X. ; Stein, F. ; Heilmaier, M. (2015)
Oxidation Behavior of Binary Aluminium-Rich Fe–Al Alloys with a Fine-Scaled, Lamellar Microstructure.
In: Oxidation of Metals
doi: 10.1007/s11085-015-9535-6
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The oxidation behavior of binary Fe–Al alloys with an aluminum content between 58 and 64 at.% was studied by isothermal and cyclic oxidation experiments in a temperature range of 900–1000 °C. The parabolic rate constants were determined to be comparable to those of B2-ordered Fe–48Al. All investigated alloys exhibited a fine-scaled, lamellar microstructure (<300 nm lamellar spacing), which was a result of the eutectoid decomposition of the high-temperature phase Fe5Al8 into FeAl and FeAl2. None of these two phases showed a preferential oxidation. At 900 °C θ-Al2O3 formed, whereas at 1000 °C a transformation of the initially formed θ-Al2O3 to the slower growing and passivating α-Al2O3 was confirmed by grazing incidence X-ray diffraction measurements.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Scherf, A. ; Janda, D. ; Baghaie Yazdi, M. ; Li, X. ; Stein, F. ; Heilmaier, M. |
| Art des Eintrags: | Bibliographie |
| Titel: | Oxidation Behavior of Binary Aluminium-Rich Fe–Al Alloys with a Fine-Scaled, Lamellar Microstructure |
| Sprache: | Englisch |
| Publikationsjahr: | 2015 |
| Verlag: | Springer US |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Oxidation of Metals |
| DOI: | 10.1007/s11085-015-9535-6 |
| Kurzbeschreibung (Abstract): | The oxidation behavior of binary Fe–Al alloys with an aluminum content between 58 and 64 at.% was studied by isothermal and cyclic oxidation experiments in a temperature range of 900–1000 °C. The parabolic rate constants were determined to be comparable to those of B2-ordered Fe–48Al. All investigated alloys exhibited a fine-scaled, lamellar microstructure (<300 nm lamellar spacing), which was a result of the eutectoid decomposition of the high-temperature phase Fe5Al8 into FeAl and FeAl2. None of these two phases showed a preferential oxidation. At 900 °C θ-Al2O3 formed, whereas at 1000 °C a transformation of the initially formed θ-Al2O3 to the slower growing and passivating α-Al2O3 was confirmed by grazing incidence X-ray diffraction measurements. |
| Freie Schlagworte: | FeAl, FeAl2, Oxidation, Microstructure |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 21 Apr 2015 10:53 |
| Letzte Änderung: | 21 Apr 2015 10:53 |
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