研究了Fe-10Al、Fe-5Cr-10Al和Fe-10Cr-10Al合金在1 000℃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.
参考文献
| [1] | Hindam H;Whittle D P .Microstructure,Adhesion,and Growth Kinetics of Protective Scales on Metals and Alloys[J].Oxidation of Metals,1982,18(05):245-284. |
| [2] | Tomaszewiez P;Wallwork G R .The Oxidation of High-Purity Iron-Chromium-Aluminum Alloys at 800℃[J].Oxidation of Metals,1983,20(01):75-109. |
| [3] | Ahmed H A;Smeltzer W W .Oxidation Properties of Fe-Al Alloys(1.5-5 a/o Al)in Oxygen at 1173 K[J].Journal of the Electrochemical Society,1986,133(01):212-216. |
| [4] | Ahmed H A;Underhill R P;Smeltzer W W et al.The Use of Mossbauer and Auger Spectroscopy for Analysis of Oxide Layers on Fe-Al Alloys[J].Oxidation of Metals,1987,28(06):347-351. |
| [5] | Tomaszewicz P;Wallwork G R .Observations of Nodule Growth During the Oxidation of Pure Binary Iron Aluminum Aalloys[J].Oxidation of Metals,1983,19(05):165-185. |
| [6] | Hou P Y;Stringer J .Oxide Scale Adhesion and Impurity Segregation at the Scale/Metal Interface[J].Oxidation of Metals,1992,38(06):323-345. |
| [7] | Miner R G;Nagarajan V .The Morphology of Oxidation of Alumina--Forming Iron--Base Alloys Containing Chromium and Aluminum[J].Oxidation of Metals,1981,16(04):313-325. |
| [8] | Lambertin M;Stoklosa A;Smeltzer W W .Oxidation Properties of Fe-5Cr-4Al(wt.%)in Oxygen at Temperature 1 000 1 320℃[J].Oxidation of Metals,1981,15(04):355-373. |
| [9] | Sadique S E;Mollah A H;Islam M S et al.High-Temperature Oxidation Behavior of Iron-Chromium-Aluminum Alloys[J].Oxidation of Metals,2000,54(06):385-400. |
| [10] | Pickering H W .On the Transition From Internal to External Oxidation in Ternary Alloys[J].Journal of the Electroehemistry Society,1972,119(05):641-649. |
| [11] | Stott F H;Wood G C;Stringer J .The Influence of Alloying Elements on the Development and Maintenance of Protective Scales[J].Oxidation of Metals,1995,44(02):113-145. |
| [12] | Wagner C .Passivity and Inhibition During the Oxidation of Metal at Elevated Temperatures[J].Corrosion Science,1965,5(11):751-764. |
| [13] | 张志刚,P.Y.Hou,牛焱.Fe-xCr-10Al（x=0,5,10）合金在900℃的氧化：第三组元作用的新例子[J].金属学报,2005(06):649-654. |
| [14] | P. Y. Hou;X. F. Zhang;R. M. Cannon .Impurity distribution in Al_2O_3 formed on an FeCrAl alloy[J].Scripta materialia,2004(1):45-49. |
| [15] | Lee D B;Kim G Y;Kim J G .The Oxidation of Fe3Al-(0,2,4,6%)Cr Alloys at 1 000℃[J].Materials Science and Engineering,2003,A339(01):109-114. |
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