Abstract

OLAYA F, Jhon J  and  HERNANDEZ M, Wilson. Production and corrosion resistance of niobium nitride-niobium multilayers. Rev. LatinAm. Metal. Mater. [online]. 2013, vol.33, n.1, pp.66-73. ISSN 0255-6952.

Through this research was evaluated the corrosion resistance of the NbN/Nb multilayers produced by unbalanced magnetron sputtering (UMB). The total thickness of the coatings deposited on steel AISI 304 and silice (100) was 1 μm, and the bilayer number was varied between 1 and 30. Potentiodynamic polarization electrochemical techniques will be used with the purpose of obtaining information on corrosion current density and corrosion potential using a 3% NaCl solution. The microstructure of the coatings was analyzed by scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM) and the crystalline phases with X-ray diffraction (XRD) . The coatings with smaller period of bilayer presented the better corrosion resistance and its corrosion mechanism is discussed in this study.

Keywords : multilayers; niobium nitride; potentiodynamic polarization.

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