Properties of nanocrystalline arc PVD TiN-Cu coatings

Elyutin, A. V.; Блинков, И. В.; Volkhonsky, A. O.; Белов, Д. С.

doi:10.1134/s0020168513110046

Cited by 11 publications

(6 citation statements)

References 7 publications

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“…Many research activities are conducted on TiN, ZrN, and CrN based coatings, [1][2][3][4][5][6][7][8] but only little is known about Mo-N based materials. Mo-N coatings and, especially, face centered cubic phase c-Mo 2 N-due to its high hardness and excellent tribological performance-are promising candidates for many applications, like protective coatings against rapid tool wear.…”

Section: Introductionmentioning

confidence: 99%

Composition driven phase evolution and mechanical properties of Mo–Cr–N hard coatings

Klimashin

Riedl

Primetzhofer

et al. 2015

Journal of Applied Physics

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Although many research activities concentrate on transition metal nitrides, due to their excellent properties, only little is known about Mo–N based materials. We investigate in detail the influence of Cr on the structural evolution and mechanical properties of Mo–N coatings prepared at different nitrogen partial pressures. The chemical composition as well as the structural development of coatings prepared with N2-to-total pressure ratios (pN2/pT) of 0.32 and 0.44 can best be described by the quasi-binary Mo2N–CrN tie line. Mo2N and CrN are face centered cubic (fcc), only that for Mo2N half of the N-sublattice is vacant. Consequently, with increasing Cr content, also the N-sublattice becomes less vacant and the chemical composition of fcc single-phase ternaries can be described as Mo1−xCrxN0.5(1+x). These coatings exhibit an excellent agreement between experimentally and ab initio obtained lattice parameters of fcc Mo1−xCrxN0.5(1+x). When increasing the N2-to-total pressure ratio to pN2/pT = 0.69, the N-sublattice is already fully occupied for Cr-additions of x ≥ 0.4, as suggested by elastic recoil detection analysis and lattice parameter variations. The latter follows the ab initio obtained lattice parameters along the quasi-binary MoN–CrN tie line for x ≥ 0.5. The single-phase fcc coating with Cr/(Mo+Cr) of x ∼0.2, prepared with pN2/pT = 0.32, exhibits the highest hardness of ∼34 GPa among all coatings studied.

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Section: Introductionmentioning

confidence: 99%

Composition driven phase evolution and mechanical properties of Mo–Cr–N hard coatings

Klimashin

Riedl

Primetzhofer

et al. 2015

Journal of Applied Physics

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“…Thermal stability, heat resistance and electrochem ical behavior were studied on the solid alloy cutting VK6NST, TT10K8B, and silicon slabs with deposited (Ti,Al)N coating, on the order of 3 at % Cu, which revealed the maximum hardness [9].…”

Section: Methodsmentioning

confidence: 99%

“…One method to improve ion plasma vacuum arc (Ti, Al)N coatings allowing their high hardness with retained viscosity at comparatively low residual mac rostrains that negatively impact the adhesion resis tance of the base coating is copper modification of them [5][6][7][8][9]. Since the metallic component is not sol uble in titanium nitride, it is formed with coating dep osition at the boundaries of the forming nitride phase nuclei, limiting their growth and thereby transforming the growth of the coating into a mode that is charac terized by the formation of nuclei.…”

Section: Introductionmentioning

confidence: 99%

“…Since the metallic component is not sol uble in titanium nitride, it is formed with coating dep osition at the boundaries of the forming nitride phase nuclei, limiting their growth and thereby transforming the growth of the coating into a mode that is charac terized by the formation of nuclei. For example, it is shown in [9] that introducing copper into the coating (from 0 to 20 at %) makes the nitride phase crystallite decrease from 100-120 to 15-20 nm.…”

Section: Introductionmentioning

confidence: 99%

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Thermal stability, heat resistivity, and electrochemical corrosion resistance of (Ti,Al)N-Cu nanostructural coatings

Блинков

Белов

Volkhonskii

et al. 2015

Prot Met Phys Chem Surf

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Nanostructural ceramometallic ion plasma vacuum arc (Ti,Al)N Cu coatings with Al content on the order of 1.5 at % and 3 at % Cu with the crystallite size of 15-20 nm and a thickness of 4 µm on the solid solution are characterized by heat resistance and thermal stability till 700°C. The presence of copper atoms in the coating leads to a slight increase in the density of the passive state current relatively the (Ti,Al)N ceramic coating, but it exerts no significant influence on the electrochemical behavior of the 3 at % (Ti,Al)N-Cu system in highly oxidized chloride solution. The studied coatings are different by a high ten dency to self passivation, low passive state current densities and high resistance to the pitting corrosion that almost does not occur because of the fast transition from the pitting origin into its repassivation. As in the acid condition, the composite exhibits a high electrochemical stability in the alkaline medium, being in the passive state.

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“…To enhance the service performance of aluminum alloy turbocharger impellers under harsh desert conditions, prolong the equipment's lifespan, and minimize erosion and wearinduced damage to the aluminum alloy impellers, it becomes imperative to reinforce the surface of the aluminum alloy [1,2,[6][7][8][9]. Physical vapor deposition (PVD) of metal nitride coatings, which exhibit high hardness and excellent wear resistance, holds promise in enhancing the erosion resistance of aluminum alloys against sand [10][11][12][13]. The oxidizable nature of aluminum hinders the proper interfacial bonding between aluminum and nitride coatings [7,[14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Structure Optimization and Failure Mechanism of Metal Nitride Coatings for Enhancing the Sand Erosion Resistance of Aluminum Alloys

Yang,

Ren,

Zhang

et al. 2023

Coatings

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In this study, TiN/Ti coatings with various modulation ratios (TiN/Ti-4:1, TiN/Ti-1:1, and TiN/Ti-1:4) were deposited on 2A70 aluminum to improve its sand erosion performance. The structural design of ion implantation + high thickness Ti transition layer + TiN/Ti coatings was applied to alleviate the differences in physical properties between hard nitride coatings and 2A70 aluminum. Surface roughness, XRD, elastic modulus, hardness, and the sand erosion failure mechanism of each coating were evaluated. The hardness of TiN/Ti-4:1, TiN/Ti-1:1, and TiN/Ti-1:4 on aluminum was 26.99 GPa, 21.70 GPa, and 10.99 GPa. Sand erosion test results showed that TiN/Ti-1:1 had the highest erosion rates due to its rougher surface. Under a 90° incident angle, TiN/Ti-4:1 and TiN/Ti-1:4 both exhibited vertical cracks parallel to the coating growth direction in the bottom TiN layer at the initial erosion stage. Also, a lateral crack caused by TiN layer crack deflection emerged due to a higher crack resistance in the thicker Ti layer of TiN/Ti-1:4. Furthermore, in comparison with the layer-by-layer spalling failure behavior of TiN/Ti-1:4, overall spallation induced by the crack coalescence of the TiN layer was exhibited in TiN/Ti-4:1. In addition, cracks formed and intersected in the inner TiN layer in TiN/Ti-1:1 and TiN/Ti-4:1, resulting in layer-by-layer spallation under a 45° incident angle.

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Properties of nanocrystalline arc PVD TiN-Cu coatings

Cited by 11 publications

References 7 publications

Composition driven phase evolution and mechanical properties of Mo–Cr–N hard coatings

Composition driven phase evolution and mechanical properties of Mo–Cr–N hard coatings

Thermal stability, heat resistivity, and electrochemical corrosion resistance of (Ti,Al)N-Cu nanostructural coatings

Structure Optimization and Failure Mechanism of Metal Nitride Coatings for Enhancing the Sand Erosion Resistance of Aluminum Alloys

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