Deposition and properties of thick corrosion and wear-resistant Ti2N coatings

Direct Laser Synthesis of Functional Coatings by FEL Treatments

“…The dendritic region extends from the surface to a depth of roughly 10-15 µm and is formed by well-aligned δ-TiN x dendrites normal to the surface. This observation reveals the origin of the crystallographic texture: it is well known that the dendrites typically grow along the (100) crystallographic direction in cubic materials like TiN [15]. The tips of the dendrites pointing towards the bulk indicate that their growth began at the surface.…”

“…At room temperature titanium exhibits an hcp cell (α-Ti, space group P6 3 /mmc [13]). According to the Ti-N equilibrium phase diagram [14], the nitrogen solubility in α-Ti can reach 23 at.% at about 1000°C, and it can exceed 50 at.% in the cubic phase (δ-TiN x , B1-NaCl structure [13]); its lattice parameter a depends on the nitrogen fraction x: a [nm] = 0.41925 + 0.00467 x [15]). Other stable titanium nitrides are δ'-Ti 2 N and δ"-Ti 2 N (both having tetragonal structure [13]).…”

“…The analysis has shown a rather wide scatter of the data with 0.4209 nm < a TiN < 0.4218 nm, however, no simple correlation with the irradiation conditions could be found. Since the lattice parameter is correlated to the nitrogen fraction x by the relation a(x) = 4.1925 +0.0467 x [15], the average nitrogen concentration c N in the TiN x phase can be computed as c N =x/(1+x), obtaining values ranging from 25.8 at.% to 35.2 at.%. These values are smaller than those obtained by RNRA, but it should be taken into account that the X-ray information depth in Ti and TiN exceeds 5 µm and therefore the effect of concentration gradients is more pronounced.…”

Titanium nitride coatings on copper alloy prepared by dc reactive magnetron sputtering

“…The TiN is known for their properties like the resistance against erosion, corrosion and wear, hence it has been thoroughly used for the superficial protection of materials, mainly for ferrous alloys [1][2][3][4]. For this reason, a number of researchers have studied deeply the mechanical properties of this nitride deposited on different types of steel and their relationship with the method used in order to deposit the film [5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Evaluation of Cathodic Arc Deposited Thick CrAlSiN Coatings by Erosion Test

“…In general, coatings with micrometer thick are the basic requirement by physical vapor deposition (PVD) techniques. Over the last decades, coating deposition techniques offer possibilities to tailor coatings with advanced requirement of high thickness in specific industrial application [1]- [7]. With respect to the thick coatings by PVD, the knowledge about the feasible techniques and properties of hard coatings is limited.…”