Abstract

This paper presents the results of a theoretical analysis and experimental determination of the electrical and associated protective characteristics of poorly conducting layers on metals, modeling both oxide and hydroxide deposits on the inner surfaces of the equipment as well as films of protective coatings. The analysis is performed using the linear low-frequency ac current (10/sup -3/-10/sup -6/ Hz) method, which is based on the determination of the impedance Z, the admittance Y = 1/Z, the complex capacitance C = Y/j omega, where omega is the circular frequency of the alternating current, the complex dielectric constant epsilon, the tangent of the dielectric-loss angle tan delta and other quantities associated with them.

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