Citation

Shein AB, Zubova EN. Russian Journal of Electrochemistry 2004; 40(2): 195-199.

Copyright

(Copyright © 2004)

DOI

10.1023/B:RUEL.0000016334.67625.f4

PMID

unavailable

Abstract

Electrochemical behavior of Mn5Si3, Mn 5Ge3, Mn, Si, and Ge in sulfuric acid solutions is studied by steady-state and cyclic voltammetry. The cathodic process on Mn 5Ge3 is defined by the metallic component. During anodic polarization of Mn5Si3, manganese selectively dissolves out of the suicide lattice and silicon that remains on its surface oxidizes to SiO2, with the Si anodic dissolution rate plummeting down (by sim; 4 orders of magnitude as compared with Mn). The anodic dissolution of Mn 5Ge3 leads to ionization of both Mn and Ge. The anodic hardness of Mn5Ge3 is lower than that of Mn 5Si3.

Language: en

Keywords

article; Corrosion; Silicide; sulfuric acid; electrode; silicon derivative; germanium derivative; Anodic dissolution; silicon; corrosion; cyclic potentiometry; electrochemistry; Germanide; germanium; hardness; hydrogen; Hydrogen evolution; hydrogenation; ionization; manganese; manganese derivative; metallation; polarization; steady state