硫酸水溶液中のアルミニウムの分極曲線とその解析
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概要
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Polarization measurement of aluminum in 0.1 mol·dm−3 sulfuric acid solution was carried out. Polarization resistance calculated by differentiating polarization curve above was electrochemically analyzed. It is shown that the polarization resistances in cathodic and anodic polarization were about 0.02 and about 1 kΩ·cm2, respectively. The analysis of the polarization resistance reveals that hydrogen evolution reaction as cathodic rate-determining step has electrochemical parameters of change transfer number z=1 and transfer coefficient α=0.4. It was found that corrosion rate of aluminum in 0.1 mol·dm–3 sulfuric acid solution calculated by polarization resistance analysis was estimated as about 0.02 mA·cm−2, which almost corresponded with converted corrosion rate (0.01 and 0.03 mA·cm−2) shown in the ASM database and published papers elsewhere.
- 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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