Structure and properties of diffusive titanium nitride layers produced by hybrid method on AZ91D magnesium alloy
(1. Faculty of Materials Science and Engineering, Warsaw University of Technology,
ul.Wo？oska 141, 02-507 Warsaw, Poland;
2. Institute of Metallurgy and Materials Science Polish Academy of Science, ul. Reymonta 25,
30-059 Kraków, Poland)
ul.Wo？oska 141, 02-507 Warsaw, Poland;
2. Institute of Metallurgy and Materials Science Polish Academy of Science, ul. Reymonta 25,
30-059 Kraków, Poland)
Abstract: A diffusive titanium nitride layers were produced on AZ91D magnesium alloy by a hybrid method which combines the titanium coating physical vapor deposition (PVD) with subsequent nitriding. The layers are composed of a thin surface zone of titanium nitrides and oxides, an intermediate titanium zone and Ti-Al-Mg type diffusive zone. Since the layers improve the corrosion resistance, the best corrosion resistance is obtained when the layers are produced on aluminum base sub-layer by oxynitriding.
Key words: magnesium alloys; titanium nitride; diffusive layers; hybrid method