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Thin films of titanium nitride/zirconium nitride were deposited on AISI 4140 steel by a multi-target magnetron sputtering system with radio frequency. The process was developed under the substrate rotation system which allowed placing the substrate against the titanium and zirconium targets, generating the super-lattice with periods of 1, 50, 100, and 200 bilayers. The multilayers were evaluated against the corrosion-erosion synergy in a solution composed by 3% NaCl and silica. The electrochemical characterization was performed by electrochemical impedance spectroscopy. After the mechanic and electrochemical tests the surface was evaluated using scanning electron microscopy. By performance analysis it was observed that the material with higher synergic effect was the substrate. It is also shown that by increasing the bilayers in the system titanium nitride/zirconium nitride the corrosive phenomenon controls the material deterioration.

COMPORTAMIENTO DE CORROSIÓN-EROSIÓN EN RECUBRIMIENTOS DE TiN/ZrN DEPOSITADOS SOBRE ACERO AISI 4140