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首页> 外文会议>TMS annual meeting exhibition >RETRACTED CHAPTER: Surface Reaction and Transport in Oxides Formed on FeCrAl Alloys in High Temperature Nitridation Environments
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RETRACTED CHAPTER: Surface Reaction and Transport in Oxides Formed on FeCrAl Alloys in High Temperature Nitridation Environments

机译：缩回章节：高温氮化环境下FeCrAl合金上形成的氧化物中的表面反应和迁移

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An extended experimental study on corrosion of commercial FeClAl alloys in predominantly N_2 atmosphere at high temperatures raises furdaniental questions concerning nitrogen permeation through oxide scale cononents, each commonly perceived to constitute a robust barrier. State-of-the-art microscopy combined with DFT calculations is employed to unravel the orderlying mechanisms for how chromia nodules support nitrogen dissociation and subsequently act windows for internal nitridation. A similar analysis adressed the role of yttria nodules shown to exhibit apparent expulsion of trogen,, while favoring rapid alumina growth underneath the nodules. In this case, as for the slowly growing bare alpha alumina scale, the origin for the protection towards nitrogen permeation was identified as the inability to satisfy the necessary conditions for N_2 dissociation.
机译：在高温下，主要在N_2气氛中对商用FeClAl合金进行腐蚀的扩展实验研究提出了关于氮通过氧化物垢成分渗透的问题，这些问题通常被认为构成了坚固的屏障。先进的显微镜技术与DFT计算相结合，揭示了色度结节如何支持氮解离并随后充当内部氮化窗口的有序机制。相似的分析表明，氧化钇结核的作用显示出明显的驱除三聚氰胺，同时有利于氧化铝在结核下的快速生长。在这种情况下，至于缓慢生长的裸露的α氧化铝鳞片，保护其免受氮渗透的根源被确定为无法满足N_2离解的必要条件。

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