Influence of iron and copper in aluminum on filiform corrosion.
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概要
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A dipping test in tap water at room temperature and electrochemical measurements in 3% NaCl solution at 25°C were carried out on aluminum containing Cu up to 0.026 and Fe up to 0.45%. Filiform corrosion occurs only on aluminum containing Fe of an impurity. Polarization curves show that H<SUB>2</SUB> over-voltage and corrosion current of Al-Fe alloys are lower than those of Al-Cu and Al-Fe-Cu alloys. Anodic polarization curves on aluminum containing Cu trace and Fe 0.46% show that the current is caused by filiform corrosion and pitting corrosion. Anodic current in the potential region near the rest potential is caused by filiform corrosion. An increase in anodic current at a succeeding stage is caused by pitting corrosion.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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