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Contributions of surface analysis to corrosion science: Selective dissolution and oxidation phenomena in alloy corrosion
Author(s) -
Landolt D.
Publication year - 1990
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740150702
Subject(s) - dissolution , corrosion , oxide , polarization (electrochemistry) , alloy , x ray photoelectron spectroscopy , electrochemistry , metal , anode , materials science , metallurgy , chemical state , chemistry , inorganic chemistry , chemical engineering , electrode , engineering
Abstract The role for corrosion kinetics of corrosion‐induced surface composition changes on alloys is discussed and illustrated with surface analytical (AES, XPS, SIMS) and electrochemical (polarization behaviour) results from the author's laboratory. In situ oxidation of FeCrMo alloys, anodic dissolution in the active state of binary noble metal alloys (AgPd) and anodic dissolution in the passive state are compared. It is shown that selective oxidation and dissolution phenomena and differences in the transport rate of cations in thin oxide films control the chemical composition of the surface region and thus greatly affect the corrosion rate.