The crystallographic template effect assisting the formation of stable α-Al2O3 during low temperature oxidation of Fe-Al alloys

被引：33
作者：
Brito, Pedro [1 ]
Pinto, Haroldo [2 ]
Kostka, Aleksander [3 ,4 ]
机构：
[1] Pontificia Univ Catolica Minas Gerais, Dept Engn Mecan, Av Dom Jose Gaspar 500, BR-30535901 Belo Horizonte, MG, Brazil
[2] Univ Sao Paulo, Dept Engn Mat, Av Trabalhador Sao Carlene 400, BR-13560970 Sao Carlos, SP, Brazil
[3] Ruhr Univ Bochum, Mat Res Dept, Univ Str 150, D-44780 Bochum, Germany
[4] Ruhr Univ Bochum, ZGH, Univ Str 150, D-44780 Bochum, Germany
来源：
CORROSION SCIENCE | 2016年 / 105卷
关键词：
Alloy; Aluminum; Iron; Raman spectroscopy; XRD; Oxidation; PHASE-TRANSFORMATION BEHAVIOR; THERMALLY-GROWN ALUMINA; OXIDE SCALE FORMATION; IRON ALUMINIDES; AL2O3; SCALE; THIN-FILMS; HEMATITE; COATINGS; TEXTURE; STRESS;
D O I：
10.1016/j.corsci.2016.01.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The role of thermally grown alpha-Fe2O3 on the nucleation of alpha-Al2O3 during oxidation of binary Fe-Al alloys with 15 and 26 at.%Al at 700 degrees C was investigated. Surface morphology of the oxide scales indicated direct nucleation of alpha-Al2O3 preferentially instead of conversion from metastable Al2O3 polymorphs. Oxide scale development over time was also monitored by use of synchrotron X-ray diffraction and Raman spectroscopy. The results showed that the alpha-Fe2O3 crystal lattice decreases in volume as oxidation progresses, which was found to be consistent with an Al-3* enrichment of alpha-Fe2O3 as confirmed by the change in relative intensity of alpha-Fe2O3 Raman peaks. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：100 / 108
页数：9
相关论文
共 46 条
[1]   High temperature oxidation of Fe-Al and Fe-Cr-Al alloys: The role of Cr as a chemically active element [J].
Airiskallio, E. ;
Nurmi, E. ;
Heinonen, M. H. ;
Vayrynen, I. J. ;
Kokko, K. ;
Ropo, M. ;
Punkkinen, M. P. J. ;
Pitkanen, H. ;
Alatalo, M. ;
Kollar, J. ;
Johansson, B. ;
Vitos, L. .
CORROSION SCIENCE, 2010, 52 (10) :3394-3404
[2]   Microstructure of α-alumina thin films deposited at low temperatures on chromia template layers [J].
Andersson, JM ;
Czigány, Z ;
Jin, P ;
Helmersson, U .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A, 2004, 22 (01) :117-121
[3]   A comparison of the oxidation behaviours of Al2O3 formers and Cr2O3 formers at 700°C -: Oxide solid solutions acting as a template for nucleation [J].
Asteman, H. ;
Spiegel, M. .
CORROSION SCIENCE, 2008, 50 (06) :1734-1743
[4]   High-temperature oxidation of Fe3Al-based iron aluminides in oxygen [J].
Babu, N ;
Balasubramaniam, R ;
Ghosh, A .
CORROSION SCIENCE, 2001, 43 (12) :2239-2254
[5]   Textures of alumina scales on FeCrAl alloys [J].
Blachère, JR ;
Schumann, E ;
Meier, GH ;
Pettit, FS .
SCRIPTA MATERIALIA, 2003, 49 (09) :909-912
[6]   Epitaxial stress and texture in thin oxide layers grown on Fe-Al alloys [J].
Brito, P. ;
Pinto, H. ;
Genzel, Ch. ;
Klaus, M. ;
Kaysser-Pyzalla, A. .
ACTA MATERIALIA, 2012, 60 (03) :1230-1237
[7]   Growth Stresses and Phase Development in Nanostructured Oxide Scales Formed on Iron Aluminides [J].
Brito, Pedro ;
Pinto, Haroldo ;
Rothkirch, Andre ;
Pyzalla, Anke .
THERMEC 2009, PTS 1-4, 2010, 638-642 :2903-+
[8]   Internal stresses and textures of nanostructured alumina scales growing on polycrystalline Fe3Al alloy [J].
Brito, Pedro ;
Pinto, Haroldo ;
Klaus, Manuela ;
Genzel, Christoph ;
Kaysser-Pyzalla, Anke .
POWDER DIFFRACTION, 2010, 25 (02) :114-118
[9]  
Chevalier S, 2010, OXID MET, V73, P43, DOI [10.1007/s11085-009-9168-8, 10.1007/s11085-009-9168-1]
[10]   Oxide scale formation on 316L and FeCrAl steels exposed to oxygen controlled static LBE at temperatures up to 800 °C [J].
Cionea, C. ;
Abad, M. D. ;
Aussat, Y. ;
Frazer, D. ;
Gubser, A. J. ;
Hosemann, P. .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2016, 144 :235-246
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