Measurement of weak magnetic field of corrosion current of isolated corrosion center
I. V. Bardin,
V. A. Bautin,
S. A. Gudoshnikov,
B. Ya. Ljubimov,
N. A. Usov
Affiliations
I. V. Bardin
National University of Science and Technology “MISiS,” 119049, Leninskiy prospekt 4, Moscow, Russia
V. A. Bautin
National University of Science and Technology “MISiS,” 119049, Leninskiy prospekt 4, Moscow, Russia
S. A. Gudoshnikov
National University of Science and Technology “MISiS,” 119049, Leninskiy prospekt 4, Moscow, Russia
B. Ya. Ljubimov
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, (IZMIRAN), 142190, Troitsk, Moscow, Russia
N. A. Usov
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, (IZMIRAN), 142190, Troitsk, Moscow, Russia
A very small magnetic field of corrosion current, of the order of 10−4 Oe, generated by isolated zinc inclusion in a copper platelet placed in electrolyte has been measured for the first time with a highly sensitive giant magneto-impedance magnetometer. The total corrosion current of the inclusion is estimated comparing the measured magnetic field distribution with corresponding theoretical calculation. The estimated value of the total corrosion current turns out to be in reasonable agreement with that one obtained in the standard gravimetric measurement.
