Fe_3Al/ZrO_2复合材料海水腐蚀电化学行为  

ELECTROCHEMICAL CORROSION BEHAVIOUR OF Fe_3Al/ZrO_2 COMPOSITES

作　　者：刘涛[1] 常雪婷[2] 滕少磊[1] 杜建波[1] 李嘉[3] 尹衍升 

机构地区：[1]中国海洋大学材料研究院,青岛266003 [2]山东大学材料学院,济南250061 [3]济南大学材料学院,济南250001

出　　处：《中国腐蚀与防护学报》2007年第5期263-268,共6页Journal of Chinese Society For Corrosion and Protection

基　　金：山东省博士基金(2006BS04021);国家自然科学基金资助(50672090;50572034)

摘　　要：用电化学阻抗、极化曲线、扫描电镜等测试手段研究单相Fe3Al和Fe3Al/ZrO2复合材料的耐海水腐蚀性能。结果表明:浸蚀初期,材料的抗局部腐蚀能力由强到弱依次为单相Fe3Al>Fe3Al(75 vol%)/ZrO2>Fe3Al(50 vol%)/ZrO2,但随着浸蚀时间的延长,Fe3Al(50 vol%)/ZrO2复合材料的腐蚀速率下降较快;浸蚀30 d后,其抗海水腐蚀性最好。The experiment was carried out on the systematic contrast of the Fe3Al,Fe3Al （75 vol%）/ZrO2 and Fe3Al （50 vol%）/ZrO2 samples With the methods of electrochemical impedance spectroscopy （EIS）,polarization and SEM. Through establishing electrical model of the metal/solution and equivalent circuit （EC）,it proved that the corrosion resistance of the composites is worse than the single-phase Fe3Al material after immersed in seawater for 1 day. However, with the immersion time increasing ,the corrosion rate of Fe3Al （50 vol%）/ZrO2 sample decreased dramatically because of its special microstructure.Finally the corrosion resistance of Fe3Al（50 vol%）/ZrO2 was proved to be the best of the three materals.

关 键 词：Fe3Al/ZrO2复合材料 电化学阻抗 海水腐蚀 

分 类 号：TQ050.91[化学工程]