Micro- and nanocomposite Ti-Al-N/Ni-Cr-B-Si-Fe-based protective coatings: Structure and properties

Pogrebnyak, A. D.; Drobyshevskaya, A. A.; Береснев, В. М.; Кылышканов, М. К.; Kirik, T V; Дуб, С. Н.; Komarov, F. F.; Шипиленко, Андрій Павлович; Tuleushev, Yu. Zh.

doi:10.1134/s1063784211070188

Cited by 17 publications

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“…[8], we reported that deposition of Ti-Al-N coatings on to thick Ni-Cr-B-Si-Fe one resulted in improved physical-mechanical properties. In this case, hardness values reach only 22 ± 1.8 GPa, which, first of all, is related to the large nanograin sizes of 17÷22 nm to 34 ÷ 90 nm.…”

Section: Introductionmentioning

confidence: 99%

“…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.…”

Section: Introductionmentioning

confidence: 99%

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

Section: Introductionmentioning

confidence: 99%

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

et al. 2011

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This paper presents the first results on formation and study of structure and properties of micro-and nanocomposite combined coatings. By means of modeling the deposition processes (deposition conditions, current density-discharge, plasma composition and density, voltage) we formed the three-layer nanocomposite coatings of Ti-Al-N/Ti-N/Al 2 O 3 . The coating composition, structure and properties were studied using physical and nuclear-physical methods. The Rutherford proton and helium ion backscattering, scanning electron microscopy with microanalysis, grazing incidence X-ray diffraction, as well as nanohardness tests (hardness) were used. Measurements of wear resistance and corrosion resistance in NaCl, HCl and H 2 SO 4 solutions were also performed. For testing mechanical properties such characteristics of layered structures as hardness H, elastic modulus E:were measured. It is demonstrated that the formed three-layer nanocomposite coatings have hardness of 32 to 36 GPa and elastic modulus of 328 ± 18 to 364 ± 14 GPa. Its wear resistance (cylinder-surface friction) increased by factor of 17 to 25 in comparison with the substrate (stainless steel). The layers thickness was in the range of 56-120 µm.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2011

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“…The desired functional properties can be reached using deposition of relatively thin (with a thickness of up to 10 μm) multielement coatings [1][2][3]. When the vacuum-arc technology is employed, the best (primarily, mechanical) properties are obtained for multielement coatings based on nitrides of transition metals [4][5][6][7][8].…”

Section: Doi: 101134/s1063784217050073mentioning

confidence: 99%

Effect of bias voltage and nitrogen pressure on the structure and properties of vacuum-arc (Mo + Ti6%Si)N coatings

et al. 2017

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Abstract-Effect of deposition conditions in reactive nitrogen atmosphere on the growth morphology, phase composition, structure, and mechanical characteristics (microhardness) of vacuum-arc multilayer coatings obtained using evaporation of the (Ti6%Si) and Mo cathodes is studied with the aid of raster electron microscopy, energy-dispersive elemental microanalysis, and microindentation. It is demonstrated that nitrogen atoms are redistributed to the region of the strongest nitride-forming element (Ti) in relatively thin layers (about 7 nm) consisting of substances with substantially different heats of formation (−336 kJ/mol for TiN and −34 kJ/mol for MoN). Such a process leads to lamination with the formation of nitride TiN and metal Mo (weaker nitride-forming element). Nitrogen-metal bonds are saturated in the layers of strong nitrideforming elements Ti(Si) when the nitrogen pressure increases from 6 × 10 -4 to 5 × 10 -3 Torr in the condensation procedure. Thus, the compound is filled with nitrogen to the stoichiometric composition and, then, the second system of layers based on molybdenum is saturated with nitrogen with the formation of the γ-Mo 2 N phase. An increase in bias potential U SP from -100 to -200 V stimulates mixing in thin layers with the formation of the (Ti, Si, Mo)N solid solution and leads to a decrease in microhardness from 37 to 32 GPa. DOI: 10.1134/S1063784217050073INTRODUCTION Additional requirements on the surface properties of components and structures emerge due to the development of modern technologies. The desired functional properties can be reached using deposition of relatively thin (with a thickness of up to 10 μm) multielement coatings [1][2][3]. When the vacuum-arc technology is employed, the best (primarily, mechanical) properties are obtained for multielement coatings based on nitrides of transition metals [4][5][6][7][8].Rapid recent progress in structural engineering is related to the study of the composition of multielement coatings, regularities of the formation of structure and stressed state, and the relation of the parameters and physicochemical characteristics [9][10][11]. The corresponding results are used to interpret physical processes of the formation of nanocrystalline solid coatings under strongly nonequilibrium conditions for deposition of vacuum-plasma fluxes [12][13][14]. In this regard, the method for formation of multilayer structures with nanosized periods is employed for efficient control of nanostructure state of coatings [15,16]. Crystallite structures with variable structural nonequilibrium, imperfection, and element distribution in volume and interfacial regions are formed when the composite structures are fabricated [17][18][19][20].

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“…It was shown [1][2][3][4][5][6][7] that when the entropy extremely rises, relaxation has no time to proceed and the system remains nonequilibrium. This improves the operating performance of coatings, specifically, their properties such as strength, wear resistance, corrosion resistance, heat resistance, and hightemperature stability [1][2][3][4][5]. High entropy is achieved in a multicomponent single-phase disordered solid solution prepared by vacuum deposition.…”

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confidence: 99%

Radiation Resistance of high-entropy nanostructured (Ti, Hf, Zr, V, Nb)N coatings

2015

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Abstract-The influence of high-fluence ion irradiation of nanostructured (Ti, Hf, Zr, V, Nb)N coatings is revealed for the first time. The energy of irradiating helium ions is equal to 500 keV, and their fluence falls into the interval 5 × 10 16 -3 × 10 17 ions/cm 2 . The performance of the coatings in a nuclear reactor is simulated by conducting post-irradiation thermal annealing at 773 K for 15 min. The elemental composition, structure, morphology, and strength properties of the (Ti, Hf, Zr, V, Nb)N coatings are studied before and after irradiation. No considerable structural and phase modifications in the coatings are found after irradiation, except for the fact that crystallites in the coatings drastically reduce in size to less than 10 nm. Nor does the atomic composition of the coatings change. It is shown that the microhardness of the coatings depends on the fluence of irradiating ions nonlinearly. It can be argued that the (Ti, Hf, Zr, V, Nb)N coatings are radiationresistant and hence promising for claddings of fuel elements in nuclear reactors. DOI: 10.1134/S1063784215100187INTRODUCTION High-entropy nitride alloys, such as (Ti, Hf, Zr, V, Nb)N compounds, are of great interest owing to their unique properties. It was shown [1][2][3][4][5][6][7] that when the entropy extremely rises, relaxation has no time to proceed and the system remains nonequilibrium. This improves the operating performance of coatings, specifically, their properties such as strength, wear resistance, corrosion resistance, heat resistance, and hightemperature stability [1][2][3][4][5]. High entropy is achieved in a multicomponent single-phase disordered solid solution prepared by vacuum deposition. In this method, a coating is deposited on a substrate at a low temperature as a result of which the coating nucleation and growth rates are high. This feature adds to the entropy of the forming system and favors the formation of an ultra-fine-grained structure of the nanocrystalline film.As is known [8], the state of the system is described in terms of the thermodynamic potential function(1) where G is the internal energy, p is the pressure, V is the volume, T is the temperature, and S is the entropy.The stability of a thermodynamic system is characterized by a minimum of the Helmholtz free energy,

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Micro- and nanocomposite Ti-Al-N/Ni-Cr-B-Si-Fe-based protective coatings: Structure and properties

Cited by 17 publications

References 8 publications

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

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

Effect of bias voltage and nitrogen pressure on the structure and properties of vacuum-arc (Mo + Ti6%Si)N coatings

Radiation Resistance of high-entropy nanostructured (Ti, Hf, Zr, V, Nb)N coatings

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Micro- and nanocomposite Ti-Al-N/Ni-Cr-B-Si-Fe-based protective coatings: Structure and properties

Cited by 17 publications

References 8 publications

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

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

Effect of bias voltage and nitrogen pressure on the structure and properties of vacuum-arc (Mo + Ti6%Si)N coatings

Radiation Resistance of high-entropy nanostructured (Ti, Hf, Zr, V, Nb)N coatings

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

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