АНАЛИЗ МЕТОДА CMAS (COUPLED MULTIELECTRODE ARRAY SENSORS) ДЛЯ ОПРЕДЕЛЕНИЯ ЛОКАЛЬНОЙ КОРРОЗИИ

Background. In the article the possibilities of CMAS (Coupled Multielectrode Array Sensors) method for corrosion control are considered and the results of 24-day comparative experiment, in which along with this method there were used method LPR, gravimetry and laser microscopy of the sample surface are presented. The solution of this problem included analysis of the theoretical foundations of this method and its experimental verification. Aims and Objectives. The aim of this research is to obtain reasoned conclusions about the advisability of applying the method CMAS for determination of local corrosion. Methods. The authors used graphoanalytical method for analyzing the polarization curves of a multielectrode sensor and solving the system of equations, compiled on the basis of information on rectilinear dependence «potential - logarithm of current» in the practically used range of anode current values. The verification of the convergence of CMAS method was carried out on an experimental stand «Мonicor-Stand-А» using method LPR, gravimetry and laser microscopy of the sample surface. Results. On the basis of the work, recommendations are given for the applicability of the CMAS method for controlling local corrosion and identified the conditions under which the method can give incorrect results.

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