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Title Structure and properties of arc evaporated nanoscale TiN/MoN multilayered systems
Authors Pohrebniak, Oleksandr Dmytrovych  
Eyidi, D.
Abadias, G.
Beresnev, V.M.
Bondar, Oleksandr Viacheslavovych  
Sobol, O.V.
Keywords Hardness
Multilayers
Mo2N
TiN
Composition
Nanocomposite
Type Article
Date of Issue 2015
URI http://essuir.sumdu.edu.ua/handle/123456789/46073
Publisher Elsevier
License
Citation Pogrebnjak, A.D. Structure and properties of arc evaporated nanoscale TiN/MoN multilayered systems [Текст] / A.D. Pogrebnjak, D. Eyidi, G. Abadias [та ін.] // International Journal of Refractory Metals and Hard Materials. — 2015. — №48. — С. 222-228.
Abstract Using vacuum-arc evaporation method we fabricated periodic multilayered TiN/MoN structures with different bilayer periods λ ranging from 25 to 100 nm. Rutherford backscattering (RBS), X-ray diffraction (XRD), scanning electron microscopy (SEM) as well as transmission electron microscopy (TEM) and microhardness measurements were used for investigations of composition, structure and mechanical properties of the multilayered coatings. We found that molybdenum nitride and titanium nitride layers grown on steel show local partial epitaxy and columnar growth across interfaces. A molybdenum–titanium carbide interlayer was evidenced between the substrate and the multilayer. Molybdenum nitride and titanium nitride layers contain small (5–30 nm) grains and are well crystallized with (100) preferred orientation. They were identified as stoichiometric fcc TiN and cubic γ-Mo2N. Non-cubic molybdenum nitride phases were also detected. The hardness of the obtained structures achieved great values and maximal hardness was 29–31 GPa for multilayered structure with 50 nm period. Hardness of the obtained coatings is 25% higher in comparison with initial single-layer nitride coatings, wherein plasticity index (H/E) of multilayered structure is 0.075.
Appears in Collections: Наукові видання (ЕлІТ)

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