Abstract
On the basis of results of pulse – potentiostatic and pulse – galvanostatic methods of investigation of anodic dissolution of iron and steel in neutral chlorate solutions at pulse anode-cathodic treatment it is shown that depassivity of an anodic surface deals with: a) effect of mutual influence of processes, which take place during anodic and cathodic pulses; b) accumulation of chloride – ions, due to reduction of chlorate in a cathodic pulse. Owing to the above-stated effects the relation Qa Qc (values of charge in anodic and
cathodic pulses), providing the greatest possible rate of dissolution, can achieve values 20–30 and more. It means at pulse anode-cathodic machining there is necessity of use of such parameters of pulses, at which the cathodic pulse will be utilized only as activating one (at a small value of a missed charge).