The use of electrochemical impedance spectroscopy (EIS) and vibrating sample magnetometer (VSM) for measuring the corrosion rate of polymer-coated ferromagnetic metals

N. Eliaz, D. B. Mitton, N. J. Cantini, G. Leisk, S. L. Wallace, F. Bellucci, G. E. Thompson, R. M. Latanision

Research output: Contribution to journalArticlepeer-review

Abstract

Electrochemical impedance spectroscopy (EIS) has some significant drawbacks with regard to in situ measurements of the corrosion rate beneath a polymer coating. The vibrating sample magnetometer (VSM) can be used to measure the saturation magnetic moment (μ5) of ferromagnetic materials, thus indicating their mass (volume). A novel approach is introduced in this work to monitor the corrosion of bare and acrylic-coated cobalt in situ and in real time by coupling EIS and VSM. This combination is found to be powerful when the corrosion products are not ferromagnetic. For the first time, the corrosion rate beneath a polymer coating is measured accurately in situ. Furthermore, it is suggested that the VSM can be used to enhance the interpretation of EIS data.

Original languageEnglish
Pages (from-to)90-97
Number of pages8
JournalMaterials Technology
Volume16
Issue number2
DOIs
StatePublished - Jun 2001
Externally publishedYes

Fingerprint

Dive into the research topics of 'The use of electrochemical impedance spectroscopy (EIS) and vibrating sample magnetometer (VSM) for measuring the corrosion rate of polymer-coated ferromagnetic metals'. Together they form a unique fingerprint.

Cite this