An integrated in situ ATR-FTIR and EIS study of buried metal/polymer interfaces exposed to an electrolyte solution
2007 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 0019-4686, Vol. 52, 5159-5171 p.Article in journal (Refereed) Published
In situ studies of buried aluminium/polymer interfaces were performed by combining Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR) with Electrochemical Impedance Spectroscopy (EIS). The capability of this integrated analytical set-up was explored by studying the characteristics of three different aluminium/polymer systems upon exposure to a 1 M NaSCN solution. Various qualifications of the systems were distinguished and the ingress of water and electrolyte, oxidation/corrosion of aluminium, swelling of the polymer and delamination were identified. This new set of complementary acting tools provides comprehensive information of the aluminium/polymer system, with ATR-FTIR being specific for the surface-near region and EIS taking into account changes within the whole system. While oxidation/corrosion and delamination are processes difficult to distinguish by EIS, oxide formation could be confirmed by ATR-FTIR. While it may be difficult to distinguish between delamination and polymer swelling with ATR-FTIR, these processes were more easily identified with EIS.
Place, publisher, year, edition, pages
2007. Vol. 52, 5159-5171 p.
IMPEDANCE SPECTROSCOPY, COATED ALUMINUM, OXIDE-FILMS, PART II, WATER, EPOXY, THIOCYANATE, CORROSION, SPECTRA, CONFIGURATION
IdentifiersURN: urn:nbn:se:kth:diva-6637DOI: 10.1016/j.electacta.2007.02.007ISI: 000246292100004OAI: oai:DiVA.org:kth-6637DiVA: diva2:11399
QC 201011222006-12-152006-12-152010-12-02Bibliographically approved