Effect of cerium addition on microstructure and texture of aluminum foil for electrolytic capacitors
来源期刊：Journal of Rare Earths2010年第1期
论文作者：王海燕 李文学 任慧平 黄丽颖 王向阳
文章页码：134 - 137
摘 要：Anode foil of aluminum electrolytic capacitor,which requires large surface area for high capacitance,were prepared by rolling,annealing and electrochemical etching.Effects of cerium addition on the capacitance of aluminum electrolytic capacitors were investigated.Microstructure of the aluminum foil surface was observed by optical microscopy（OM） and scanning electron microscopy（SEM）.Electron back scattered diffraction（EBSD） was also employed to reveal texture evolvement of cold-rolled aluminum foil after annealed.The results showed that addition of cerium contributed to higher <100> texture and higher etch pit density as well.Moreover,the distribution of etch tunnels was more uniform compared with that without cerium addition.Perfect specific surface area was obtained with 0.0074% addition of cerium.
王海燕1,2，李文学1，任慧平1，黄丽颖1，王向阳1
1. School of Material and Metallurgy Engineering,Inner Mongolia University of Science and Technology2. School of Materials Science and Engineering,University of Science and Technology Beijing
摘 要：Anode foil of aluminum electrolytic capacitor,which requires large surface area for high capacitance,were prepared by rolling,annealing and electrochemical etching.Effects of cerium addition on the capacitance of aluminum electrolytic capacitors were investigated.Microstructure of the aluminum foil surface was observed by optical microscopy（OM） and scanning electron microscopy（SEM）.Electron back scattered diffraction（EBSD） was also employed to reveal texture evolvement of cold-rolled aluminum foil after annealed.The results showed that addition of cerium contributed to higher <100> texture and higher etch pit density as well.Moreover,the distribution of etch tunnels was more uniform compared with that without cerium addition.Perfect specific surface area was obtained with 0.0074% addition of cerium.
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