EFFECTIVENESS OF INSULATION SPACERS IN PROTECTING FROM BIMETALLIC CORROSION

This study addresses problems of the assessment of the effectiveness o f insulation components (spacers, washers, etc.) used for the electric al release of a variety of metallic structures operating in media that are aggressive in corrosion respects. Basic laws governing the reduct ion in corrosion rate as a function of parameters of insulation spacer s with incomplete electrical release of metallic components are brough t to light in an example of the solution of the problem of the current distribution of contact corrosion during electrochemical interaction between disk and annular coplanar concentric electrodes. Optimal relat ionships between the thicknesses of the spacers and the characteristic dimensions of the interacting components ate established.