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Influence of hydrogel coatings on corrosion and fatigue of iron in simulated body fluid
Author(s) -
Huang Jingyuan,
Voigt Markus,
Wackenrohr Steffen,
Ebbert Christoph,
Keller Adrian,
Maier Hans Jürgen,
Grundmeier Guido
Publication year - 2022
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.202112841
Subject(s) - corrosion , simulated body fluid , materials science , dielectric spectroscopy , x ray photoelectron spectroscopy , raman spectroscopy , coating , electrolyte , fourier transform infrared spectroscopy , attenuated total reflection , electrochemistry , metallurgy , chemical engineering , analytical chemistry (journal) , composite material , scanning electron microscope , electrode , chemistry , optics , chromatography , physics , engineering
Surface corrosion and fatigue studies of pure iron were performed in a modified simulated body fluid (m‐SBF) electrolyte with and without applied agar films as a typical hydrogel film. The electrochemical corrosion rates were analysed using electrochemical impedance spectroscopy. The morphology and surface chemical composition of the samples after exposure were analysed using X‐ray photoelectron spectroscopy and Raman microscopy. The swelling process of the agar film was measured by in situ fourier‐transform infrared spectroscopy in attenuated total reflection. The combination of the electrochemical and interface analytical approaches allowed for the estimation of the influence of an applied agar film on the corrosion processes. Moreover, the studies clearly reveal a correlation between the surface corrosion process and the fatigue life of the iron samples in m‐SBF.