In-operando analysis of the corrosion patterns and rates under magnetic fields using metallic film

Magnets, or electromagnets, are common components in everyday appliances and are widely used in medicine, industries, transportation, and electrical power systems. It is known that the magnetic field ( B ) can mitigate or aggravate metallic corrosion; however, this apparent contradictory effect is s...

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Bibliographic Details
Published in:Npj Materials degradation 2022-03, Vol.6 (1), p.1-7, Article 24
Main Authors: Mitre, Cirlei Igreja Nascimento, Tosin, Giancarlo, Colnago, Luiz Alberto
Format: Article
Language:English
Subjects:
639/301/930/12
639/638
Chemistry and Materials Science
Clad metals
Corrosion
Corrosion and Coatings
Corrosion effects
Corrosion rate
Digital cameras
Electric power systems
Electrochemistry
Ferric chloride
Lorentz force
Magnetic fields
Materials Science
Permanent magnets
Structural Materials
Tribology
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Summary:Magnets, or electromagnets, are common components in everyday appliances and are widely used in medicine, industries, transportation, and electrical power systems. It is known that the magnetic field ( B ) can mitigate or aggravate metallic corrosion; however, this apparent contradictory effect is still not fully understood. In this study, we demonstrate a simple method to monitor in-operando the effect of permanent magnets ( B ) on corrosion processes using metallic film (copper clad laminate), FeCl 3 solution as corrosive medium, and digital camera to record the experiments. The results show that homogeneous and inhomogeneous B decrease or increase the corrosion rate, respectively. The homogeneous and inhomogeneous B also shows different corrosion patterns and induces rotation of the corrosive medium indicating the presence of the Lorentz force. The procedure proposed can also be applied to other metals and corrosive media providing valuable information on the corrosion process in the presence of B in several environmental conditions.
ISSN:2397-2106
2397-2106
DOI:10.1038/s41529-022-00233-5