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Relationship between Trace Mn and the Pitting Behavior of Aluminum Foil Used for High Voltage Electrolytic Capacitors
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Relationship between Trace Mn and the Pitting Behavior of Aluminum Foil Used for High Voltage Electrolytic Capacitors
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Program for Changjiang Scholars and Innovative Research Team in University (IRT0713)

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    摘要:

    研究了微量錳元素添加對高壓電解電容器陽極用鋁箔的點蝕行為以及腐蝕箔性質(zhì)的影響。使用二次離子質(zhì)譜儀分析了軋制及退火鋁箔中錳的元素分布。結(jié)果表明,錳在鋁箔中的深度分布隨著錳含量的增加而變化,但退火后鋁箔中形成的立方織構(gòu)的體積分?jǐn)?shù)保持穩(wěn)定。隨錳含量增加,錳在退火鋁箔表面的偏聚趨勢增強。在相同的加電腐蝕條件下,腐蝕后錳含量高的鋁箔表面具有更高密度的方形點蝕孔,并且并孔更少,點蝕孔分布更加均勻。在所研究的范圍內(nèi) (2.3 ~ 14.7 μg/g),在520 V形成的腐蝕箔的比電容隨錳含量的增加而提高

    Abstract:

    The effect of Mn addition in aluminum anode foils for high voltage electrolytic capacitors on the pitting behavior as well as the properties of the etched foils was studied. The Mn distribution in the aluminum foils which are processed with the same rolling and annealing condition was characterized by secondary ion mass spectrometer (SIMS). The results show that the distribution of Mn along the depth of the foil varies with the addition of Mn, while the volume fraction of the cube texture keeps stable. The SIMS results also show that the segregation tendency of Mn onto the foil surface becomes stronger with the increasing of Mn content. The square corrosion pits on the foils with higher Mn content after etching on the same condition are denser and more homogeneous. Also, the specific capacitance of the etched foils after forming at 520 V increases with the increase of Mn content in the range from 2.3 μg/g to 14.7 μg/g

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左 宏,劉春明. Relationship between Trace Mn and the Pitting Behavior of Aluminum Foil Used for High Voltage Electrolytic Capacitors[J].稀有金屬材料與工程,2014,43(5):1031~1036.[Zuo Hong, Liu Chunming. Relationship between Trace Mn and the Pitting Behavior of Aluminum Foil Used for High Voltage Electrolytic Capacitors[J]. Rare Metal Materials and Engineering,2014,43(5):1031~1036.]
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  • 收稿日期:2013-08-08
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  • 在線發(fā)布日期: 2014-10-13
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