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Influence of Selenium on the Internal Oxidation of Fe–Si–Al–C Alloy

机译:硒对Fe-Si-Al-C合金内部氧化的影响

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The effect of selenium on the oxidation of Fe–Si–Al–C alloy during decarburization at 840°C in wet hydrogen was studied. Selenium was found to change the morphology of internal oxides of an Fe–Si–Al–C alloy. The long penetrating internal oxides of Si and Al in the alloy containing 0.034 at.% Se demonstrate an obvious preferential growth perpendicular to the steel substrate. FEG-SEM/EDX was performed to analyze the scale and the subscale. It was assumed that columnar morphology of internal oxides could be induced by selenium surface segregation. Therefore, in-situ AES analysis using a resistive heating of specimen in UHV was used to obtain more accurate data on temperature dependence of selenium surface segregation in silicon steel. Additionally, the kinetics of the selenium surface segregation was investigated in-situ during annealing at 840°C in the ultra-high vacuum chamber of a field-emission Auger electron spectrometer.
机译:研究了硒对840°C湿氢脱碳过程中Fe-Si-Al-C合金氧化的影响。发现硒改变了Fe-Si-Al-C合金的内部氧化物的形态。含有0.034 at。%Se的合金中的Si和Al的长渗透内部氧化物表现出垂直于钢基底的明显优先生长。进行FEG-SEM / EDX分析量表和子量表。假定硒表面偏析可以诱导内部氧化物的柱状形态。因此,使用在UHV中对样品进行电阻加热的原位AES分析被用于获得有关硅钢中硒表面偏析的温度依赖性的更准确数据。另外,在场发射俄歇电子能谱仪的超高真空室中于840°C退火期间,对硒表面偏析的动力学进行了原位研究。

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