The Effect of Additional Elements on Oxide Scale Evolution of Fe-20at.%Cr-10at.%Al Alloy at 900 °C in Air
The Effect of Additional Elements on Oxide Scale Evolution of Fe-20at.%Cr-10at.%Al Alloy at 900 °C in Air
复制标题
添加元素对Fe-20at.%Cr-10at.%Al合金在空气中900℃氧化皮演变的影响
DOI：
10.4028/www.scientific.net/msf.595-598.1013
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
T. Narita
中科院分区：
文献类型：
--
作者：
Yuri Kitajima;S. Hayashi;S. Ukai;T. Narita
Fe-20 at.%的氧化行为Cr-10at.%研究了含有少量W、Cu、Mn、Nb、Mo、Re、Co或Ti等添加元素的铝合金在900 ℃下保温625小时的性能。添加到FeCrAl合金中的第四种元素可分为两组：Al 2 O3氧化皮中含有的元素（Mn、Nb、Ti）和氧化皮中不存在的元素（W、Mo、Re、Co）。在后一种情况下，元素（W，Cu）引起的鳞片。含Mn、Nb和Ti的合金的皱曲比其它合金的小。含钛合金表面光滑。Pt标记实验表明，含Ti合金表面形成的Al 2 O3氧化膜是由O的内扩散长大的，而FeCrAl合金表面形成的Al 2 O3氧化膜是由Al的外扩散和O的内扩散共同长大的。这种不同的生长行为，由于在Al 2 O3的规模纳入的元素可能会对表面起皱行为的影响。
The oxidation behavior of Fe-20at.%Cr-10at.%Al alloys with a small amount of an additional element such as W, Cu, Mn, Nb, Mo, Re, Co or Ti was investigated at 900 °C for up to 625hr. The fourth element addition to the FeCrAl alloy could be classified into two groups; elements (Mn, Nb, Ti) that are contained in the Al2O3 scale, and elements (W, Mo, Re, Co) which are not present in the scale. In the latter case, the elements (W, Cu) caused scale spallation. The rumpling of alloys with Mn, Nb or Ti was smaller than that of the other alloys. The surface of the alloy with Ti was the smooth. Pt marker experiments suggested that the Al2O3 scale formed on the alloy with Ti grew by inward diffusion of O, whilst the Al2O3 scale formed on the FeCrAl alloy grew by both outward diffusion of Al and inward diffusion of O. This different growth behavior due to the elements incorporated in the Al2O3 scale could have an effect on the surface rumpling behavior.