イオン注入法で作成した元素偏析モデル鉄基板上への亜鉛電析挙動

概要

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Influences of segregated ions in the iron substrate on the Zn crystal orientation during zinc electrodeposition were studied. Ion bombardment method was adopted to prepare specimen which has controlled concentration of the selected ions. Carbon, silicon, phosphorus, sulfur and iron were ion bombarded into pure iron substrate in the rage of 0.05 to 1.0 at% as a peak concentration.Carbon and silicon influence on the appearance and orientation of electrodeposited zinc. As the concentration of these elements increases, appearance of the electrodeposit changes. This phenomena is attributed to the orientation change of deposit, from Zn (00·2) to Zn (10·1) Zn (10·3). On the other hand, phosphorus and surfer do not influence to the appearance.Electrochemical potential during electrodeposition becomes negative as concentration of carbon and silicon increases.