用旋转圆柱电极研究铝表面氧化膜
A Study on Oxide Film of Aluminum Anode Using Rotary Cylinder Electrode
摘 要
采用恒电流极化、电化学阻抗测试等方法,通过旋转电极研究在不同转速下纯铝及铝合金在4 m mol/L的NaOH电解液中氧化膜的生成与脱落情况.结果表明:在未加极化时纯铝表面也会形成一层薄的氧化膜,基本认为这层膜为较为疏松的单层多孔层膜,膜的脱落随转速的增加而加快.极化后纯铝表面形成了有一定厚度的双层氧化膜,内层与铝基体结合紧密,在转动情况下也不易脱落,外层较为疏松,在转动时很容易脱落.铝合金由于合金化的影响很难形成稳定的氧化膜,且氧化膜在静态时就很容易脱落,转速对其影响不大.
铝合金
电化学
氧化膜
旋转圆柱电极
aluminum
aluminum alloy
electrochemistry
oxide film
rotary cylinder electrode
Abstract
The oxide film of aluminum anode in 4m mol/L NaOH was studied using rotary cylinder electrode and EIS etc.The research showed that pure aluminum could form a very thin single oxide film without polarization.The oxide film falled off quickly when rotate speed was up.The oxide film became double layers after polarization.The double layers included inner layer and outer layer.The inner layer combined with aluminum substrate closely and did not fall off.The outer layer was loose and easy to fall off when the electrode was running.The aluminum alloy could not form a steady oxide film ance.The rotating speed had little infection on the film.
中图分类号 TG174.4
所属栏目 试验研究
基金项目
收稿日期 2008/3/13
修改稿日期 2008/4/17
网络出版日期
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引用该论文: LIU Lie-wei,ZHOU Li,CAO Fa. A Study on Oxide Film of Aluminum Anode Using Rotary Cylinder Electrode[J]. Corrosion & Protection, 2009, 30(4): 244～247
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参考文献
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【2】Albert J M,Anibu K,Ganesan M,et al.Characterization of different grades of commercially pure aluminum as prospective galvanic anodes in saline and alkaline battery electrolyte[J].J Apple Electrochem,1989,19:547-551.
【3】Macdoanld D D,English C.Development of anodes for aluminum/air battery-solution phase inhibition of corrosion[J].J Apple Electrochem,1990,20:405-417.
【4】Shimizu K,Kobayashi K,Thompson G E.Development of porous anodic films on aluminum[J\.Philosophical Magazine,1992,66(4):643-652.
【5】Evelina Palibroda.Aluminum porous oxide growth-11 on the rate deforming step[J].Electrochemical ACTA,1995,40(8):101-105.
【6】马正青,黎文献,肖丁德,等.新型铝合金阳极电化学性能与组织研究[J].材料保护,2002,35(5):9-12.
【7】游文,林顺岩.杂质对 Al-Ga-Bi-Pb合金电化学性能的影响[J].铝加工,1998,21(5):35-38.
【8】舒方霞,王兆文,高炳亮,等.碱性铝-空气电池用铝合金阳极的研究进展[J].电池,2005,35(2):158-159.
【9】刘功浪,林顺岩.阳极铝合金熔炼铸造工艺研究[J].铝加工,2000,23(6):9-13.
【10】秦学,李振亚,余远彬,等.铝合金阳极活化机理研究进展[J].电源技术,2000,24(1):53-55.
【11】Heber K V.Studies on Porous Al2O3 Growth Physical Model[J].Electrocbim Acta,1978,23(I27).
【12】徐源,Thompson G E,Bethune B B.壁垒型铝阳极氧化膜的成分及电解质离子在膜中的漂移[J].中国腐蚀与防护学报,1987,7(3):161-169.
【13】徐源,Thompson G E,Wood G C.多孔型铝阳极氧化膜孔洞形成过程的研究[J].中国腐蚀与防护学报,1989,9(1):1-6.
【14】郭鹤桐,王 为.铝阳极氧化膜的回顾与展望[J].材料保护,2000,33(1):43-45.
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