Surface characterization of passive film formed on nitrogen ion implanted Ti–6Al–4V and Ti–6Al–7Nb alloys using SIMS

CrN/NbN coatings deposited by HIPIMS: A preliminary study of erosion–corrosion performance

“…This enhanced tribo-corrosion resistance of H-H coating can be attributed to the superior microstructure (inter-columnar void free) in the above potential range. In the potential range of -300 mV to + 350 mV both the coated substrates show passive behaviour even under 9 particle bombardment suggesting an immediate reformation/repair of the protective passive layer consisting of oxides and oxynitrides [19] of Chromium and Niobium. For the H-H coated substrates the protective nature of coating/passive layer is more evident, limiting the current densities to near constant values.…”

The microstructure and surface hardness of Ti6Al4V alloy implanted with nitrogen ions at an elevated temperature

“…Ion implantation may produce new metastable, amorphous and crystalline phases and solid solutions. Budzynski [13] and others [7,[14][15][16] have investigated the influence of nitrogen ion implantation at energies up to 200 keV and at fluences from 1 Á 10 16 cm À2 up to 1 Á 10 18 cm À2 on the surface properties of Ti6Al4V alloy. They concluded that nitrogen ion implantation increased the hardness and the wear resistance at higher fluences, resulting in the formation of a non-homogeneous surface layer composed of hard TiN x phases.…”

Wear behaviour of nitric acid passivated cp Ti and Ti6Al4V

“…Titanium and its alloys are characterised by high yield strength and toughness, moderate modules, low density, good corrosion resistance and exceptional biocompatibility [1][2][3]. So, they are widely used in aerospace, biomedical and chemical plant applications [2][3][4][5].…”

“…So, they are widely used in aerospace, biomedical and chemical plant applications [2][3][4][5]. However, these alloys have a reputation for poor tribocharacteristics [4][5][6][7][8][9] and thus are restricted for further uses in tribological applications [7].…”