TY JOUR TI THE REDUCTION PROCESS OF METAL CORROSION WHEN EXPOSED TO AN ALTERNATING FREQUENCY-MODULATED SIGNAL KW corrosion KW method KW metal KW aggressive environment KW oil KW electrical method KW mass KW algorithm KW scanning probe microscope KW landscape KW mode JO Problems of risk management in the technosphere AU Ivanov, A.V. AU Skrypnyk, I.L. AU Voronin, S.V. PY 2019 IS 2019 PB Saint-Petersburg University of State Fire Service of Emercom of Russia