METHOD FOR OBTAINING RADAR ABSORBING COATING ON VALVE METALS AND THEIR ALLOYS AND COATING OBTAINED USING THIS METHOD

摘要

FIELD: electricity.;SUBSTANCE: coating is made in the form of a ceramic layer which contains magnetoactive substances, wherein ceramic layer is made with thickness from 5 to 100 mcm, it contains a dispersed phase of metallic iron and/or iron-containing substance as the magnetoactive substances with distribution of the mentioned phase in the form of particles with sizes ranging from 300 nm to 2 mcm. The method comprises forming an electrochemical system consisting of an anode as a workpiece, iron-containing water solution suitable for microplasma processing and a cathode, and passing electric current through the mentioned system, wherein through the formed electrochemical system the pulse electric current is passed with a pulse frequency of not less than 5 Hz, having a trapezoidal shape and amplitude from 250 to 900 with repetition of voltage pulse interleaving of variable duration from pulses with longer duration to the pulses with shorter duration.;EFFECT: coating absorbs electromagnetic radiation in the terahertz frequency range and is resistant to corrosion.;19 cl, 3 dwg, 5 ex