Structures and properties of hard and superhard nanocomposite coatings

Pogrebnyak, A. D.; Shpak, A. P.; Azarenkov, N. A.; Береснев, В. М.

doi:10.3367/ufne.0179.200901b.0035

Cited by 161 publications

(64 citation statements)

References 150 publications

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“…As it was reported in the previous papers [22,23], coatings on the (Ti,Zr)N base have high hardness 42-48 GPa, as well as resistance to oxidation under the influence of high temperatures 1170°С [24][25][26][27][28]. It is also known, that nanoscale multilayer coatings on the base of TiN, CrN, ZrN, and MoN have higher hardness in comparison with single-layer ones with the hardness equal to 24-38 GPa [25,[29][30][31].…”

Section: Introductionmentioning

confidence: 56%

Multilayered vacuum-arc nanocomposite TiN/ZrN coatings before and after annealing: Structure, properties, first-principles calculations

Pogrebnjak

Иващенко

Бондар

et al. 2017

Materials Characterization

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A B S T R A C TNanoscale multilayered TiN/ZrN films were deposited using sequential vacuum-arc deposition of Ti and Zr targets in a nitrogen atmosphere. Studies of film's properties were carried out using various modern methods of analysis, such as XRD, STEM, HRTEM, SIMS combined with results of nanoindentation and tribological tests. To interpret the mechanical properties of the deposited multilayer films first-principles calculations of TiN(111), ZrN(111) structures and TiN(111)/ZrN(111) multilayer were carried out. To study the influence of thermal annealing, several samples were annealed in air at the temperature 700°C. All deposited samples were highly polycrystalline with quite large 20-25 nm crystals. The crystalline planes were very ordinated and demonstrated an excellent coordinated growth. The nanohardness and elastic modulus of non-annealed coatings reached 42 GPa and 348 GPa, respectively. Annealing in air at the temperature 700°C led to partial oxidation of the multilayered coatings, however hardness of the non-oxidized part of the coatings remained as high, as for initial coatings. All deposited coatings demonstrate good wear resistance.

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Section: Introductionmentioning

confidence: 56%

Multilayered vacuum-arc nanocomposite TiN/ZrN coatings before and after annealing: Structure, properties, first-principles calculations

Pogrebnjak

Иващенко

Бондар

et al. 2017

Materials Characterization

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“…Part of positrons can be captured on the interface of two neighboring nanograins or on boundary junction of three neighboring nanocrystals. It gives us good opportunity to solve one of the most complicated and interesting problems of nanomaterials-to understand structure (including electron structure) of the interfaces between nanograins, because length (volume) of such interfaces influences a lot on properties of nanocomposite coatings [1][2][3][4][5][6][7][8][9]. Figure 4 shows dependence of S-parameter on energy, in other words, we can see profiles of defects in Ti-Si-N coating before (black curve) and after (red curve) thermal annealing under the temperature of 600˚C (30 min).…”

Section: Resultsmentioning

confidence: 99%

“…Elementary composition of the coatings was studied using Rutherford backscattering of 4 He + ions with 1.7 MeV energy, detector resolution E = 13 keV, dispersion angle ≈ 1700. Also we used scanning electron microscopy (SEM) with energy dispersion analysis (Jeol 7000F microscope, Japan) in contrast of electrons and in direct and backscattering electron reflection.…”

Section: Deposition Regimes and Methods Of Coating's Analysismentioning

confidence: 99%

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Changing of Defect’s Structure and Properties of Superhard Nanostructured Ti-Si-N Coatings, Fabricated Using CPVD, before and after Annealing

Pogrebnjak¹,

Бондар²,

Sоbоl³

et al. 2013

SNL

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Using such unique methods of analysis as slow positron beam (SPB), RBS, µ-PIXE (proton microbeam), XRD, SEM with EDS, XPS, nanohardness and elastic modulus measurements, we studied superhard nanostructure Ti-Si-N coatings, which were deposited using Cathodic-PVD method, before and after annealing at the temperature of 600˚C for 30 minutes. It is shown in the paper that redistribution of N and Si occurs on the borders of nanograins after annealing, amorphous phase α-SiN x (Si 3 N 4 ) is created, defects segregates on interfaces and forms vacancy-type clusters with rather high concentration from 5 × 10 16 cm −3 to 7.5 × 10 17 cm −3 due to thermodiffusion. Solid solution (Ti,Si)N and small concentration of α-SiN (close to XRD detection limits) are formed in the coating. Also it was obtained, that deflected mode is formed in the coating (compressive deformation equals to -2.6%), but after thermal annealing deformation reduces to a value of −2.3%. Size of nanograins of solid solution (Ti, Si)N increases from 12.5 nm to (13.2 -13.4) nm. 25 nm size grains increase their size to 28.5 nm after annealing (under another deposition regime).

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“…during many plasma processes [11][12][13]. Such coatings may have a very complex single-or multi-phase structure, most often being built from columnar crystallites of variable size, depending on the deposition process parameters and chemical composition [13][14][15][16][17][18]. In addition, these coatings can be given the form of, e.g., periodic multilayers [19] and sculptured with the direction of the flux of ions and atoms reaching the substrate [20].…”

Section: Introductionmentioning

confidence: 99%

Diffractometric examination of the structure of heat-resisting steel-based coatings in different measurement geometries

Kucharska

2011

Open Physics

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Abstract:Coatings of the composition of 310S heat-resisting steel dopped Al and Ir additions, deposited on a substrate of the same steel by the magnetron sputtering method, were examined. The measurements were made in the classical Bragg-Brentano geometry and by the GXRD method. With the fixed and different position of the coated sample by rotating the sample by angles ψ. The coating as deposited and after being soaked at 400°C for 15 minutes was subjected to examinations. The examination carried out have shown that coatings may have a unique, subtle structure which is metastable and undergoes irreversible changes in the temperatures up to 400°C. It has been found that in the outermost coating zones and zones closer to the substrate, areas occur in the coating structure, which have the different lattice parameter compared to the basic phase. Additionaly, the local period of the structure equal 5.9 nm was found.

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Structures and properties of hard and superhard nanocomposite coatings

Cited by 161 publications

References 150 publications

Multilayered vacuum-arc nanocomposite TiN/ZrN coatings before and after annealing: Structure, properties, first-principles calculations

Multilayered vacuum-arc nanocomposite TiN/ZrN coatings before and after annealing: Structure, properties, first-principles calculations

Changing of Defect’s Structure and Properties of Superhard Nanostructured Ti-Si-N Coatings, Fabricated Using CPVD, before and after Annealing

Diffractometric examination of the structure of heat-resisting steel-based coatings in different measurement geometries

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