Corrosion of steel in presence of borate ions in aqueous solutions

被引：0

作者：

Gomma, GK ^{[1
]}

机构：

[1] Tanta Univ, Fac Educ, Dept Chem, Kafr Al Sheikh, Egypt

来源：

BULLETIN OF ELECTROCHEMISTRY | 1998年 / 14卷 / 03期

关键词：

potentiodynamic studies; borate and corrosion of steel;

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：

Anodic and cathodic polarization measurements for the corrosion of steel in aqueous solutions containing various concentrations of boric acid and sodium borate have been studied poteutiodynamically. Open circuit potentials for the corrosion of steel electrode in the mentioned solutions at 303 K become more negative with increasing pH in the anodic region. At sufficiently anodic potentials, in presence of borate ions, passivation characteristics were obtained. Cathodic Tafel slopes for the hydrogen evolution reaction (h.e.r) on steel for the different solutions were determined. The presence of borate ions in the solution leads to the formation of Fe complex during anodic polarisation which is sparingly soluble at low pH value and causes passivation.

引用

页码：103 / 106

页数：4

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