Anodic Polarization and Surface Composition of Fe-16Al-0.14C Alloy in 0.25 M Sulfuric Acid

V. Shankar Rao; V. S. Raja

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Anodic Polarization and Surface Composition of Fe-16Al-0.14C Alloy in 0.25 M Sulfuric Acid

机译：Anodic Polarization and Surface Composition of Fe-16Al-0.14C Alloy in 0.25 M Sulfuric Acid

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摘要

Anodic polarization behavior of electroslag-refined cast iron aluminide having the composition of Fe-16Al-0.14C was studied in 0.25 M sulfuric acid (H_2SO_4). The anodic polarization curve displayed a secondary anodic peak in the pre-passivation region, which has not been reported in the literature, before reaching the broad passive region. The films formed at the passive potential of 1 V vs saturated calomel electrode (SCE) and at the pre-passivation potential of -0.35 V_(SCE) were examined by x-ray photoelectron spectroscopy (XPS). At these potentials, both Al and Fe were found to be present in the films formed by the alloy with a marginal variation in Al/Fe ratio. In addition, Cu was found to exist on the aluminide surface at -0.35 V_(SCE).

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来源
《Corrosion: The Journal of Science and Engineering》 |2003年第7期|575-583|共9页
作者
V. Shankar Rao; V. S. Raja;
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作者单位

Corrosion Science and Engineering, Indian Institute of Technology, Bombay, Mumbai 400 076, India.;

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原文格式 PDF
正文语种英语
中图分类金属腐蚀与保护、金属表面处理;
关键词
anodic polarization; electroslag refining process; hydrogen embrittlement; iron aluminides; oxidation; passivation; x-ray photoelectron spectroscopy;

Anodic Polarization and Surface Composition of Fe-16Al-0.14C Alloy in 0.25 M Sulfuric Acid

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