Electrochemical behavior of metallic chromium in chloride media

被引：0
|
作者：
Silva, GC [1 ]
Vilchenski, MC [1 ]
Sumodjo, PTA [1 ]
Benedetti, AV [1 ]
机构：
[1] Univ Estadual Paulista, UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil
来源：
CORROSION AND CORROSION CONTROL IN SALTWATER ENVIRONMENTS | 2000年 / 99卷 / 26期
关键词：
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The electrochemical behavior of metallic chromium in aqueous solutions containing chloride ions at different pH was studied by means of open-circuit potential vs. time measurements, cyclic voltammetry and electrochemical impedance spectroscopy. The composition of the surface oxides was analyzed by XPS. For solutions with pH<3 the formation of a passive layer occurs via a dissolution/precipitation process while for pH>3 the mechanism changes. XPS analysis revealed that Cr2O3 basically constitutes the passive layer.
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页码：183 / +
页数：10
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