Premium
Influence of the surface microgeometry upon the corrosion effect — II. Distribution of the potential and current density with negligible electrode polarization
Author(s) -
Parlapanski M.
Publication year - 1973
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19730240208
Subject(s) - polarization (electrochemistry) , anode , materials science , current density , curvature , cathode , metal , grinding , ellipsoid , electrode , surface (topology) , corrosion , condensed matter physics , mechanics , composite material , geometry , metallurgy , chemistry , physics , mathematics , quantum mechanics , astronomy
The problem is dealt with in terms of two models: (1) Metal surface with curved elements of the same metal protruding therefrom, these elements acting as anodes and the potential distribution being a function of the regularity of the curvature (semi‐spherical, semi‐ellipsoidal); (2) this model corresponds e. g. to the surface state produced by grinding: alternating cylindrical elevations and depressions, the first acting as anodes, the last as cathodes. In this case a two‐dimensional potential and current density distribution must be evaluated.