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金属上に形成した水膜中の酸素拡散挙動に及ぼす 水膜厚さと温度差の影響

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Title: 金属上に形成した水膜中の酸素拡散挙動に及ぼす 水膜厚さと温度差の影響
Other Titles: Effect of Layer Thickness and Temperature Difference on Oxygen Diffusion Behavior in Thin Solution Layer Formed on Metal
Authors: 坂入, 正敏1 Browse this author →KAKEN DB
谷口, 雅也2 Browse this author
Authors(alt): Sakairi, Masatoshi1
Taniguchi, Masaya2
Keywords: Atmospheric corrosion
Oxygen diffusion limiting current
environmental temperature
specimen temperature
thin solution layer
Issue Date: Dec-2021
Publisher: 一般社団法人 日本鉄鋼協会
Journal Title: 鉄と鋼
Journal Title(alt): Journal of the iron and steel institute of Japan
Volume: 107
Issue: 12
Start Page: 1029
End Page: 1035
Publisher DOI: 10.2355/tetsutohagane.TETSU-2021-034
Abstract: One of the controlling factors for atmospheric corrosion is oxygen diffusion behavior in thin solution layer formed on metals. The oxygen diffusion limiting current in thin solution layer formed on Zn electrode was measured electrochemically to clarify the influence of solution layer thickness, temperature difference in the solution layer on the oxygen diffusion behavior. A solution of 10 mM NaCl was used as electrolyte to form solution layers. The solution layer thickness was controlled by masking adhesive tape with through holes. The environmental temperature, T-E, was controlled by circulating temperature-controlled water and the sample temperature, T-S, was controlled by a Peltier device. At T-E = T-S, the oxygen limiting current was independent of solution layer thickness. At T-E < T-S and the solution layer thickness thinner than 0.6 mm, the oxygen diffusion limiting current increased with thinning of the solution layer. The results suggest that T-E and T-S are also take into account as estimation of steel corrosion rate at snowy and cold region.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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