Effects of Alloying Elements on Corrosion and Hydrogen Uptake of Iron in Sulfuric Acid. III. Kinetics of Proton Discharge and Hydrogen Uptake at Binary Iron Alloys

The effects of C, S, P, Mn, Si, Cr, Ni, Sn and Cu on the kinetics of H uptake of Fe in 1M H sub 2 SO sub 4 at 25 deg C are investigated by potentio-kinetic and steady state current density--potential measurements. The anodic dissolution of iron is increased mainly by S and P, and decreased by Ni, Sn...

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Published in:Materials and corrosion 1985-10, Vol.36 (10), p.455-463
Main Authors: Riecke, E, Johnen, B, Grabke, H J
Format: Article
Language:ger
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Summary:The effects of C, S, P, Mn, Si, Cr, Ni, Sn and Cu on the kinetics of H uptake of Fe in 1M H sub 2 SO sub 4 at 25 deg C are investigated by potentio-kinetic and steady state current density--potential measurements. The anodic dissolution of iron is increased mainly by S and P, and decreased by Ni, Sn and Cu. Hydrogen uptake is enhanced by S, P and Sn, and inhibited by Ni and Cu. The kinetics of hydrogen evolution on the surface of iron alloys investigated are controlled by a coupled discharge--chemical recombination mechanism. 10 ref.--AA
ISSN:0043-2822