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A spectromicroscopy study of the corrosion of fusion‐bonded epoxy–coated rebar
Author(s) -
Situm Arthur,
Guo Xiaoxuan,
Guo Bao,
Barlow Burke C.,
Burgess Ian J.,
Grosvenor Andrew P.
Publication year - 2019
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.6613
Subject(s) - rebar , epoxy , xanes , corrosion , materials science , fusion , composite material , absorption (acoustics) , polymer , spectroscopy , analytical chemistry (journal) , chemistry , chromatography , linguistics , philosophy , physics , quantum mechanics
Reported herein is an analysis of accelerated corrosion of a commercially coated fusion‐bonded epoxy rebar sample using an X‐ray spectromicroscopy methodology that involves the combination of X‐ray fluorescence mapping (XRF) and micro X‐ray absorption near‐edge spectroscopy (μ‐XANES). XRF maps collected using an excitation energy of 7115 eV reveal a sharp contrast between corroded and noncorroded sample areas after correction for topography effects that can be confirmed by Fe K‐edge μ‐XANES. This X‐ray spectromicroscopy methodology allows for the study of corrosion through commercially prepared polymer‐coated rebar coatings without any modification to the polymer film prior to analysis and is suitable for long‐term testing of the corrosion of these materials under real‐world conditions.