Initial Oxidation of Fe-Al and Fe-Cr-Al Alloys: Cr as an Alumina Booster

被引：24
|
作者：
Heinonen, M. H. [1 ,2 ]
Kokko, K. [1 ,2 ]
Punkkinen, M. P. J. [1 ,2 ,6 ]
Nurmi, E. [1 ,2 ,4 ]
Kollar, J. [5 ]
Vitos, L. [3 ,5 ,6 ]
机构：
[1] Univ Turku, Dept Phys & Astron, Turku 20014, Finland
[2] Turku Univ, Ctr Mat & Surfaces MatSurf, Turku, Finland
[3] Uppsala Univ, Dept Phys & Mat Sci, S-5121 Uppsala, Sweden
[4] Grad Sch Mat Res, Turku, Finland
[5] Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary
[6] Royal Inst Technol, Dept Mat Sci & Engn, S-10044 Stockholm, Sweden
来源：
OXIDATION OF METALS | 2011年 / 76卷 / 3-4期
关键词：
Oxidation; Fe-Cr-Al; Surface segregation; X-ray photoelectron spectroscopy; FECRAL ALLOYS; POTENTIAL MODEL; APPROXIMATION; 1000-DEGREES-C; SCALES; GROWTH; O-2;
D O I：
10.1007/s11085-011-9258-2
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The boosting effect of Cr on the growth of the protective alumina scale on Fe-Al alloys is investigated by X-ray photoelectron spectroscopy. Using low oxygen pressure the surface chemistry of the alloys is monitored starting from the first moments of oxidation. Chromium affects the Fe/Al surface-bulk exchange which is clearly detected by analyzing the measured surface concentrations within the atomic concentration models. Experimental results presented are in good agreement with the previous ones obtained by experiments at ambient conditions and ab initio calculations.
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页码：331 / 346
页数：16
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