Electrochemical behavior of single layer CrN, TiN, TiAlN coatings and nanolayered TiAlN/CrN multilayer coatings prepared by reactive direct current magnetron sputtering

Tribocorrosion behavior and ions release of CoCrMo alloy coated with a TiAlVCN/CN multilayer in simulated body fluid plus bovine serum albumin

“…Since the long-term durability of the prosthetic joint materials rely on the successful control of both the corrosion that produces ions release and the tribocorrosion resistance that produces ions release and oxide or plastic debris, Physical Vapor Deposition (PVD) multilayer coatings offer a multifunctional protection alternative and good adherence to metallic substrates in comparison to the monolayer coating [15,[21][22][23][24][25][26]. The multilayer combine the properties of different materials in a single protective layer.…”

Pitting corrosion of TiN-coated stainless steel in 3 % NaCl solution

“…In the literature, the single phase of the TiN coating was generally obtained with various N 2 pressures, since TiN was stable across a wide stoichiometric range. [11][12][13][14][15][16][17][18][19] The grain morphology of the TiN coating was columnar (Figure 4). The columnar grain boundaries in the TiN coatings, aligned perpendicularly from the topmost surface down to the substrate/coating interface (Figure 4), were considered to be an easy path for the penetration of the electrolyte.…”

“…[9][10][11][12][13][14][15][16] Even though the widely accepted pitting corrosion mechanism of the TiN-coated substrate in the literature was local galvanic corrosion through the galvanic coupling of the TiN coating and the substrate, there remain questions about the mechanism of pitting formation and the growth of the pitting corrosion. One of the key parameters for galvanic corrosion is defects in the coatings, such as pin holes and micro and macro porosities in the coatings.…”

“…The defects in the coatings provide the electrolyte with a path to the coating/ substrate interface. [9][10][11][12][13][14][15][16] Martensitic stainless steels (EN 1.4034 was used in this work) that are generally used for the blades in kitchen appliances were coated for both decorative and wear-resistance requirements. The pitting corrosion of the TiN coating deposited by arc PVD on a stainlesssteel substrate was studied in detail with the corrosion potential (Cor.Pot), the polarization resistance (PR) and electrochemical impedance spectroscopy (EIS) techniques.…”

Improvement of the electrochemical behavior of steel surfaces using a TiN[BCN/BN]n/c-BN multilayer system

“…The depressed semicircle is generally due to a dispersion in the time constant caused by irregularities on the steel surface, surface roughness, fractal surface, and -in general -certain processes associated with an irregular distribution of the applied potential (10 mV) to obtain EIS data. The admittance representation of a CPE (Y CPE ) shows a dependent fractional-power on the angular frequency (ω): Y CPE = Y P (jω) α , where Y P is a real adjustable constant used in the non-linear least squares (NLLS) fitting, and − 1 b α b 1 is defined as a CPE power [45]. So, when α = 0, CPE is a resistor; when α = 1, it is an ideal capacitor; and when α = − 1, it is an inductor.…”