ANODE FOR OXYGEN SEPARATION AT ELECTROCHEMICAL PROCESS AND ITS SUBSTRATE

摘要

FIELD: anode for gas separation during electrochemical process having substrate of titanium or other valve metal. ^ SUBSTANCE: anode having substrate of titanium or other valve metal is characterized by surface with low mean roughness consisting 2 - 6 micrometers according to readings of profile meter with averaged width of band around mean line Pc ± 8.8 micrometers whose pick values coincide with boundaries of crystal grains. Method for producing anode substrate is also offered. Method comprises steps of controlled etching in sulfuric acid solution for preferable corrosion of boundary of said crystal grains. ^ EFFECT: increased useful life period of anodes even at using catalytic coatings with reduced content of noble metals in upper layer of coating. ^ 25 cl, 9 dwg, 6 ex