NDLI: Integrated measuring approach for the study of corrosion mechanisms

Content Provider	IEEE Xplore Digital Library
Author	Grassini, S. Parvis, M. Bouchar, M. Dillmann, P. Neff, D.
Copyright Year	2013
Description	Author affiliation: Dipt. di Scienza Appl. e Tecnol., Politec. di Torino, Turin, Italy (Grassini, S.; Parvis, M.) \|\| SIS2M, LAPA, CEA, Saclay, France (Bouchar, M.; Dillmann, P.; Neff, D.)
Abstract	The study of the corrosion mechanisms which affect iron artifacts is the first fundamental step for developing tailored and long-lasting conservation procedures. Unfortunately, such mechanisms are connected not only to the composition of the corrosion product layer, but also to its porosity and microstructure. μ-Raman spectroscopy can be used to assess the composition of the corrosion products, but the effect of the layer porosity requires a different approach. This paper investigates the combined use of μ-Raman and Electrochemical Impedance Spectroscopy (EIS) for the characterization of some iron reinforcements of the Metz Cathedral (France), with the final goals of understanding the corrosion mechanism and having a reliable assessment of the artifact stability. In particular, the proposed measuring approach has proved to be able to give useful data on the electrochemical reactivity of the surface, on the presence of cracks and on the porosity degree of the corrosion product layers. After a series of laboratory tests to characterize the surface, the EIS measurements can be employed also in-situ for a noninvasive assessment of the artifact corrosion behavior. This way it is possible to conceive long-lasting monitoring campaigns, which would allow one to identify artifacts apparently well-preserved, but in danger of possible corrosion due to the porous nature of their corrosion layers and the presence of active electrochemical species in contact to the metallic surface.
Sponsorship	IEEE Instrum. Meas. Soc.
Starting Page	990
Ending Page	995
File Size	1765013
Page Count	6
File Format	PDF
ISBN	9781467346214
ISSN	10915281
e-ISBN	9781467346238
DOI	10.1109/I2MTC.2013.6555564
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-05-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Corrosion Surface impedance Iron Electrodes Raman scattering Conductivity measurement Electrochemical Impedance Spectroscopy Corrosion mechanism
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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