研究了Fe-10Al、Fe-5Cr-10Al和Fe-10Cr-10Al分别在900℃和1 000℃的初期氧化行为.利用电子显微镜(SEM)和俄歇电子谱(AES)分析了合金表面形成氧化膜的形貌与组成.Fe-Cr-Al实现铝的选择性氧化所需的时间取决于合金中铝和铬的质量分数,同时也与氧化温度有关,较高的反应温度能促进铝的选择性氧化.Fe-10Cr-10Al比Fe-5Cr-10Al更快地实现铝的选择性氧化,而Fe-5Cr-10Al在1 000℃比在900℃更快实现铝的选择性氧化.
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