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

Abstract

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), FeCl3 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.

Review on Magnetism in Catalysis: From Theory to PEMFC Applications of 3d Metal Pt-Based Alloys

“…The authors also pointed out that the effects of external magnetic fields on the service life of metal bipolar plates have not been investigated in real fuel cells yet. In fact, studies on the possible corrosion effects due to the application of magnetic fields are limited to metals such as Fe, Zn and Al [ 438 , 439 , 440 ] and to permanent magnets, such as Nd-Fe-B and Nd-Fe-Cu-B [ 441 , 442 , 443 ], in both acidic and neutral solutions.…”

Effect of GO‐TiO2 to waterborne epoxy resin on microstructure and anti‐corrosion properties

“…Industrial equipment is affected by environmental factors during operation, especially under harsh conditions, such as high temperature, high humidity, high salt content, and strong ultraviolet radiations. The corrosion behavior, such as chemical, electrochemical or physical reactions, inevitably changes under such an environment, resulting in the destruction or failure of the equipment 1–4 . Statistically, the global annual loss due to corrosion is as high as 1.4–2.2 trillion USD and the weight of scrapped steel and iron products due to corrosion is equivalent to 1/3 of the steel and iron production.…”

“…The corrosion behavior, such as chemical, electrochemical or physical reactions, inevitably changes under such an environment, resulting in the destruction or failure of the equipment. [1][2][3][4] Statistically, the global annual loss due to corrosion is as high as 1.4-2.2 trillion USD and the weight of scrapped steel and iron products due to corrosion is equivalent to 1/3 of the steel and iron production. The corrosion investigation report of the Chinese Academy of Engineering shows that, in 2016, the economic loss caused by corrosion in China reached 2.13 trillion Chinese Yuan, accounting for 3.34% of the annual GDP.…”