%0 Journal Article %A M. Ertas and A. C. Onel and G. Ekinci and B. Toydemir and S. Durdu and M. Usta and L. Colakerol Arslan %D 2015 %J International Journal of Materials and Metallurgical Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 97, 2015 %T Investigation of VN/TiN Multilayer Coatings on AZ91D Mg Alloys %U https://publications.waset.org/pdf/10000217 %V 97 %X To develop AZ91D magnesium alloys with improved properties, we have applied TiN and VN/TiN multilayer coatings using DC magnetron sputter technique. Coating structure, surface morphology, chemical bonding and corrosion resistance of coatings were analyzed by x-ray diffraction (XRD), scanning electron microscope (SEM), x-ray photoelectron spectroscopy (XPS), and tafel extrapolation method, respectively. XPS analysis reveal that VN overlayer reacts with oxygen at the VN/TiN interface and forms more stable TiN layer. Morphological investigations and the corrosion results show that VN/TiN multilayer thin film coatings are quite effective to optimize the corrosion resistance of Mg alloys. %P 53 - 57