INSITU INFRARED SPECTROSCOPIC STUDY OF THE ANODIC OXIDE FILM ON IRON IN ALKALINE-SOLUTIONS

被引:23
作者
BEWICK, A [1 ]
KALAJI, M [1 ]
LARRAMONA, G [1 ]
机构
[1] UNIV SOUTHAMPTON, DEPT CHEM, SOUTHAMPTON SO9 5NH, HANTS, ENGLAND
关键词
D O I
10.1016/0022-0728(91)85304-8
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The composition of the oxide film formed on iron in 0.1, 1 and 5 M NaOH was investigated using in-situ infrared spectroscopy (SNIFTIRS). For all three solutions Fe(OH)2 was found. In 1 M NaOH, alpha-FeOOH was also observed. An unassigned Fe(III) oxycompound was seen in 1 M and 5 M solutions, whose structure is proposed to be close to that of delta-FeOOH. A different Fe(III) oxycompound was detected in 0.1 M NaOH. The evolution of the layer with changing electrode potential and with repeated cycling is discussed.
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收藏
页码:207 / 221
页数:15
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