Structure and properties of coatings on Ni base deposited using a plasma jet before and after electron a beam irradiation

Pogrebnjak, A.D.; Ruzimov, Sh. M.; Alontseva, Darya; Żukowski, P.; Karwat, C.; Kozak, C.; Kolasik, M.

doi:10.1016/j.vacuum.2007.01.071

Cited by 48 publications

(18 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was confirmed by the theoretical and experimental studies [27][28][29]33]. Therefore, reduction of the S-parameter (sample 512) may be connected to the annealing of interface vacancies, resulting in a decrease of the S-parameter intensity [38][39][40].…”

Section: Resultsmentioning

confidence: 64%

Structure and Properties of Nanostructured (Ti‐Hf‐Zr‐V‐Nb)N Coatings

Pogrebnjak

2013

Journal of Nanomaterials

View full text Add to dashboard Cite

Nanostructured coatings of (Ti-Zr-Hf-V-Nb)N were obtained by the Cathodic Arc Vapor Deposition (CAVD) method. To investigate these coatings, a number of complementary methods of elemental and structural analysis were used, namely, slow positron beam (SPB), proton microbeam (μ-PIXE), micro- and nanoelectron beam (EDS and SEM analyses), and X-ray diffraction method (XRD), including method of “α-sin2φ” measurement of a stress-strain state (X-ray strain measurement). Additionally, the texture of coatings before and after annealing up to 873 K (for time of annealingτ=30 min) was also investigated. It was shown that increasing of stress-strain state in the coating during deposition increases the resistance to oxidation at high temperatures of annealing. It was also found that the redistribution of elements and defects, as well as their alignment (segregation), appeared due to thermally stimulated diffusion. It is also connected with the process of spinodal segregation near grain boundaries and interfaces around the grains and subgrains.

show abstract

Section: Resultsmentioning

confidence: 64%

Structure and Properties of Nanostructured (Ti‐Hf‐Zr‐V‐Nb)N Coatings

Pogrebnjak

2013

Journal of Nanomaterials

View full text Add to dashboard Cite

show abstract

“…Positron annihilation method is the most effective, responsive and reliable method of analysis of free volumes in nanocrystalline materials (it has possible interval of defect's analysis in the range 10 −6 ± 10 −3 defects per atom) [14,15]. Part of positrons can be captured on the interface of two neighboring nanograins or on boundary junction of three neighboring nanocrystals.…”

Section: Resultsmentioning

confidence: 99%

“…For analysis of vacancy-type defects in the coating we used slow positron beam (Halle, Germany). We measured S-parameter of the Doppler broadening annihilation peak (DBAP) by changing energy of the fallen positron beam from 1 KeV to 30 KeV, and that allowed us to change the analysis depth [14,15].…”

Section: Deposition Regimes and Methods Of Coating's Analysismentioning

confidence: 99%

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

View full text Add to dashboard Cite

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).

show abstract

“…A feature complementary to the complexity of coating structure is frequently the metastability of phases that make it up, which is due to the non-equilibrium conditions of plasma deposition [14]. Metastable phases occur, e.g., in coatings made from sputtered steels and Ni alloys [21][22][23][24][25][26][27][28][29][30][31][32]. The article will present the characteristic structural features of coatings fabricated by magnetron sputtering of austenitic heat-resisting steel demonstrated by the results of X-ray measurements in different geometries.…”

Section: Introductionmentioning

confidence: 99%

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

Kucharska

2011

Open Physics

View full text Add to dashboard Cite

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.

show abstract

Structure and properties of coatings on Ni base deposited using a plasma jet before and after electron a beam irradiation

Cited by 48 publications

References 2 publications

Structure and Properties of Nanostructured (Ti‐Hf‐Zr‐V‐Nb)N Coatings

Structure and Properties of Nanostructured (Ti‐Hf‐Zr‐V‐Nb)N Coatings

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

Contact Info

Product

Resources

About