Initial Oxidation of Fe–Al and Fe–Cr–Al Alloys: Cr as an Alumina Booster
Initial Oxidation of Fe–Al and Fe–Cr–Al Alloys: Cr as an Alumina Booster
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DOI：
10.1007/s11085-011-9258-2
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发表时间：
2011-02
影响因子：
2.2
通讯作者：
M. Heinonen;K. Kokko;M. Punkkinen;E. Nurmi;Janos Koll'ar;L. Vitos
中科院分区：
文献类型：
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作者：
M. Heinonen;K. Kokko;M. Punkkinen;E. Nurmi;Janos Koll'ar;L. Vitos
用X射线光电子能谱研究了铬对Fe-Al合金表面氧化铝保护膜生长的促进作用。利用低氧压，从氧化的第一时刻开始监测合金的表面化学。铬影响Fe/Al表面-体交换，通过分析原子浓度模型中测量的表面浓度可以清楚地检测到这一点。实验结果与前人的常温实验和从头计算结果符合得很好。
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.