TiN/Cr/Al2O3 and TiN/Al2O3 hybrid coatings structure features and properties resulting from combined treatment

Multilayered Nano-Microcomposite Ti-Al-N/TiN/Al2O3Coatings. Their Structure and Properties

“…In this connection for solving the industrial problems existing in ship building and chemistry, for instance [1,5,6], one has to combine such methods of surface modification for the production of hybrid coatings possessing the def-inite operation properties [1,7]. An oxide-aluminum ceramics and other coatings based on titanium carbide and tungsten carbide and nitrides [1,[8][9][10]] possess a number of useful properties, which are able to provide corrosion protection, high hardness and mechanical strength, low wear, and good electro-isolation properties.…”

“…However, high hardness values are found only in coatings with small nano--grain sizes [8][9][10][11][12].…”

Fabrication and Research of Superhard (Zr-Ti-Cr-Nb)N Coatings

“…Figure 1 present the SEM images of the (Zr-Ti-CrNb)N coatings. One can see molten droplets there, which may be incorporated into the coating as macroparticles; it is typical during vacuum arc deposition [15][16][17][18]. As we can see from Fig.…”

“…The substrate bias strongly influences the orientation changing from preferred (111) to mixed (111) and (200) ones, and the appearance of the (112) and (300) reflections at high angles (Cr 2 N tetragonal phase). It is worth saying that the maximum intensity of the (112) and (300) reflections corresponds to the highest concentration of Cr in the coating [13,17]. Table II lists the grain size and lattice parameters of the (Zr-Ti-Cr-Nb)N coatings, which were further evaluated from the XRD patterns.…”

Investigation of NbN and Nb-Si-N Coatings Deposited by Magnetron Sputtering

“…Nanostructured films are widely used for surface hardening of cutting tools due to high hardness, good corrosion stability, and low friction coefficient [1][2][3][4][5][6][7]. Among these films, NbN-based ones are of increasing interest.…”