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铁-铬-铝合金中铬的第三组元作用 被引量：18

Effect of Third Element Cr in Fe-Cr-Al Alloys
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摘要 研究了Fe-10Al、Fe-5Cr-10Al和Fe-10Cr-10Al合金在1000℃的氧化行为,利用电子显微镜和俄歇电子谱分析了合金表面氧化膜的形貌及组成。讨论了三元Fe-Cr-Al合金形成保护性氧化膜的机理,对于不发生铝的内氧化情况提出了合金中第三组元铬的作用机制:在氧化初始阶段,铬与合金中其它两组元——铁和铝一起氧化形成各自的氧化物,铬在氧化膜内最大含量的位置处于铁和铝的最大含量位置之间;铬降低了氧化膜内的铁含量,提高了初期氧化膜的保护性,从而促进选择性氧化铝膜的形成。 The morphology and composition of the oxide scale formed on Fe-10Al alloy, Fe-5Cr-10Al alloy, and Fe-10Cr-10Al alloy surfaces at 1 000℃ were investigated using SEM and AES. A possible interpretation of the effect of the third element Cr in Fe-xCr-10Al on promoting Al2O3 scale formation not involving a transition from the internal to external oxidation of Al is briefly presented. During the initial stage of oxidation, Cr decreased Fe content in the oxide scale, by which the selective oxidation of Al was promoted.
作者 张志刚 牛焱 张学军
机构地区 中国科学院金属研究所金属腐蚀与防护国家重点实验室 沈阳化工学院应用化学学院
出处 《钢铁研究学报》 CAS CSCD 北大核心 2007年第7期46-49,53,共5页 Journal of Iron and Steel Research
基金 国家自然科学基金资助项目(50571107)
关键词 铁-铬-铝合金 选择性氧化 铬 第三组元作用 Fe-Cr-Al alloy selective oxidation chromium third element effect
分类号 TG174.451 [金属学及工艺—金属表面处理]
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参考文献15

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二级参考文献26

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共引文献4

同被引文献166

引证文献18

二级引证文献42

钢铁研究学报
2007年 第7期

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