ELECTROCHEMICAL POTENTIAL DETECTOR Russian patent published in 1994 - IPC

FIELD: electrochemical protection of underground constructions from corrosion. SUBSTANCE: detector has two metal electrodes 2,3 of different section area. One of electrodes is made from copper. Electrodes are isolated one from the other and connected with their one ends to leading-out cable 4. Electrode 2,3 ar made in the form of plates manufactured from plasma-sprayed powdered metal on substrate 1 made from porous ceramic material impregnated with aqueous solution of electrolyte. Opposite-pole metal plates on each surface of substrate are disposed in alternation with space between them so that each plate from one material on one surface of substrate corresponds to each metal plate from other material on opposite surface of substrate. Leading-out cable and electrode contact place is covered with compound 5. When plasma spraying of electrodes is used, metal usage for manufacture detector is reduced by 10-15 times. EFFECT: reduced expenses for manufacturing detector by increased conductance of detector and reduced metal usage. 3 cl, 7 dwg