Effect of atomic hydrogen on the anodic dissolution of iron in a weakly acidic sulfate electrolyte

被引：12

作者：

Marshakov, A. I. ^{[1
]}

Maleeva, M. A. ^{[1
]}

Rybkina, A. A. ^{[1
]}

Elkin, V. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Phys Chem & Electrochem, Moscow 119991, Russia

来源：

PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES | 2010年 / 46卷 / 01期

关键词：

REACTION MODEL; PASSIVE FILMS; IMPEDANCE; STEEL;

D O I：

10.1134/S2070205110010053

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Using a membrane electrode, atomic hydrogen is shown to decelerate the dissolution of iron in sulfate and sulfate-citrate electrolytes (pH 5.5) in a potential range of the active metal dissolution and accelerates the process at the prepassivation potentials. Impedance spectra of iron at a controlled degree of surface coverage with hydrogen atoms are recorded. Rate constants of elementary stages of the anodic process are calculated and the reaction scheme of the iron dissolution in sulfate environments is made more accurate.

引用

页码：40 / 49

页数：10

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