The main aim of this paper is the evaluation of the electrochemical behavior of the WC-Co layers. In this paper, which lies within the scope of a general characterization of coatings WC-Co, a particular point is related to the electrochemical behavior in sea water of these deposits projected by APS and Jet-Kote in relation to their microstructure. The paper shows a different corrosion resistance of the APS and HVOF coatings. In addition, it is observed that the durability of the applications was strongly temperature-dependent. Paper includes a German-language abstract.