Electrochemical stain prevention apparatus of submerged...

C - Chemistry – Metallurgy – 02 – F

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C02F 1/467 (2006.01) B63B 59/04 (2006.01) C02F 1/00 (2006.01) C23F 13/00 (2006.01) E02B 1/00 (2006.01) C02F 1/48 (2006.01)

Patent

CA 2288141

An electrochemical antifouling device, comprising an underwater structure of which the antifouling surface comprises an electrically conductive film that does not generate chlorine even if a potential lower than 5 V vs. SCE is applied thereto, an opposing electrode out of contact with the underwater structure, and a power source for supplying a direct current between the underwater structure and the opposing electrode. By applying a potential of from 0.1 to 5 V vs. SCE to the underwater structure, it becomes possible to effectively control underwater organisms adherent to the surface of the electrically conductive film without evolving chlorine. By disposing a reference electrode between the underwater structure and the opposing electrode, the potential applied to the electrically conducting film can be precisely controlled. The electrically conductive film is preferably a spray- coated metal nitride.

L'invention concerne un dispositif antisalissure électrochimique qui comprend ce qui suit: une structure sous-marine possédant une surface antisalissure munie d'une pellicule conductrice d'électricité qui n'émet pas de chlore même si l'on y applique un potentiel inférieur à 5 V vs. SCE; une électrode opposée qui n'est pas en contact avec la structure sous-marine et; une source d'énergie pour fournir du courant continu entre la structure sous-marine et l'électrode opposée. En appliquant à la structure sous-marine un potentiel entre 0,1 et 5 V vs. SCE, on arrive à combattre de manière efficace les organismes sous-marins qui adhèrent à la surface de la pellicule conductrice d'électricité, et ce sans émission de chlore. On peut réguler avec précision le potentiel appliqué à la pellicule conductrice d'électricité en plaçant une électrode de référence entre la structure sous-marine et l'électrode opposée. La pellicule conductrice d'électricité est, de préférence, un nitrure de métal appliqué par pulvérisation.

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