The promotion of the anodic dissolution of polycrystalline iron surfaces by adsorbed sulfur: a UHV-electrochemical study

G.Seshadri; T.-C.Lin; J.A.Kelber

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The promotion of the anodic dissolution of polycrystalline iron surfaces by adsorbed sulfur: a UHV-electrochemical study

机译：吸附硫促进多晶铁表面的阳极溶解：UHV电化学研究

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The effect of systematically increasing surface coverage of sulfur on the electrochemical behavior of polycrystalline iron in a mildly alkaline (pH 8.4) buffer has been examined by combined ultrahigh vacuum/ electrochemistry methodology. Polycrystalline Fe surfaces were cleaned and characterized under UHV conditions, then exposed to H_2S gas prior to immersion in the electrolyte solutions. Adsorbed sulfur is found to enhance anodic dissolution, tough passivation is ultimately observed at all levels of surface sulfur saturation.

机译：通过组合的超高真空/电化学方法，已经研究了系统地增加硫的表面覆盖度对中度碱性（pH 8.4）缓冲液中多晶铁的电化学行为的影响。在UHV条件下清洁和表征多晶铁表面，然后在浸入电解质溶液中之前先暴露于H_2S气体。发现吸附的硫增强了阳极溶解，最终在所有水平的表面硫饱和度下均观察到了坚硬的钝化作用。

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《Corrosion Science》 |1997年第5期|p.987-1000|共14页
作者
G.Seshadri; T.-C.Lin; J.A.Kelber;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类金属腐蚀与保护、金属表面处理;
关键词
iron; XPS; segregation;

机译：铁;XPS;隔离;

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The promotion of the anodic dissolution of polycrystalline iron surfaces by adsorbed sulfur: a UHV-electrochemical study

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