Search Results - "Polcar, T."

Review on self-lubricant transition metal dichalcogenide nanocomposite coatings alloyed with carbon by Polcar, T., Cavaleiro, A.

“…In this paper, we review the results on the tribological behavior of nanocomposite coatings composed of nanoplatelets of transition metal dichalcogenides (TMD)…”
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Influence of Cr additions on the structure and oxidation resistance of multilayered TiAlCrN films by Danek, M., Fernandes, F., Cavaleiro, A., Polcar, T.

“…Ti1−xAlxN coatings with NaCl-type structure have been widely used in advanced machining and other high temperature applications due to their excellent…”
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Tribological and cutting performance of TiAlCrN films with different Cr contents deposited with multilayered structure by Fernandes, F., Danek, M., Polcar, T., Cavaleiro, A.

“…Increasing requirements on high speed and dry cutting applications open up new demands on the quality of cutting tool materials. In this study, we evaluated…”
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Microstructural evolution of helium-irradiated 6H–SiC subjected to different irradiation conditions and annealing temperatures: A multiple characterization study by Daghbouj, N., Li, B.S., Callisti, M., Sen, H.S., Karlik, M., Polcar, T.

“…The microstructural phenomena occurring in 6H–SiC subjected to different irradiation conditions and annealing temperatures were investigated to assess the…”
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The structural evolution of light-ion implanted 6H-SiC single crystal: Comparison of the effect of helium and hydrogen by Daghbouj, N., Li, B.S., Callisti, M., Sen, H.S., Lin, J., Ou, X., Karlik, M., Polcar, T.

“…The microstructure evolution of hydrogen-implanted 6H-SiC at different temperatures and fluences is investigated by using various experimental techniques. In…”
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New Reactive Force Field for Simulations of MoS2 Crystallization by Ponomarev, I., Polcar, T., Nicolini, P.

“…We present a new reactive force field (ReaxFF) parameter set for simulations of Mo–S structures. We compare our parameterization to the state-of-the-art ones…”
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Vacancy-interface-helium interaction in Zr-Nb multi-layer system: A first-principles study by Sen, H.S., Polcar, T.

“…Driven by our previous experimental findings, we have performed ab-initio simulations to investigate the mechanical properties of and vacancy-interface-helium…”
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Sliding Properties of MoS2 Layers: Load and Interlayer Orientation Effects by Levita, G, Cavaleiro, A, Molinari, E, Polcar, T, Righi, M. C

“…Among the members of the transition metal dichalcogenides (TMD) family, molybdenum disulfide has the most consolidated application outcomes in tribological…”
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Helium migration in Zr-Nb multilayers under electric field by Sen, H.S., Polcar, T.

“…The α particles, which appear during the nuclear reactions and are transformed into He atoms, are often implanted into (or produced in) the structural…”
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Bubbles formation in helium ion irradiated Cu/W multilayer nanocomposites: Effects on structure and mechanical properties by Callisti, M., Karlik, M., Polcar, T.

“…This study investigates the effects of He bubbles on structural and mechanical properties of sputter-deposited Cu/W multilayers. A multilayer with a…”
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The effect of increasing V content on the structure, mechanical properties and oxidation resistance of Ti–Si–V–N films deposited by DC reactive magnetron sputtering by Fernandes, F., Loureiro, A., Polcar, T., Cavaleiro, A.

“…•V is placed in solid solution in the fcc phase of low temperature deposited films.•Regardless on V content, hardness and Young's modulus of TiSi(V)N films are…”
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Tribological properties of V2O5 studied via reactive molecular dynamics simulations by Ponomarev, I., Polcar, T., Nicolini, P.

“…Providing lubrication at high temperature in the presence of oxygen is a significant technological challenge. We apply reactive molecular dynamics to study…”
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Mechanisms of friction and wear reduction by h-BN nanosheet and spherical W nanoparticle additives to base oil: Experimental study and molecular dynamics simulation by Bondarev, A.V., Fraile, A., Polcar, T., Shtansky, D.V.

“…Hexagonal boron nitride (h-BN) nanosheets, spherical W nanoparticles, and their combinations were utilized as lubricant additives to synthetic PAO6 oil. The…”
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Tribological behaviour of W-S-C coated ceramics in a vacuum environment by Simonovic, K., Vitu, T., Cammarata, A., Cavaleiro, A., Polcar, T.

“…Sliding of the WSC coated ceramics (ball-on-disc configuration) was investigated under vacuum condition at multiple loads (2–18 N), and each experiment was…”
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Length-scale-dependent mechanical behaviour of Zr/Nb multilayers as a function of individual layer thickness by Frutos, E., Callisti, M., Karlik, M., Polcar, T.

“…Nanostructured metallic multilayers systems continue to garner interest because of their promising mechanical properties, exploitable in the field of materials…”
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Tribological analysis of thin films by pin-on-disc: Evaluation of friction and wear measurement uncertainty by Novak, R., Polcar, T.

“…Pin-on-disc is widely used to evaluate tribological properties of thin films. However, the results are often present without standard uncertainties; moreover,…”
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Characterizing heavy ions-irradiated Zr/Nb: Structure and mechanical properties by Daghbouj, N., Sen, H.S., Čížek, J., Lorinčík, J., Karlík, M., Callisti, M., Čech, J., Havránek, V., Li, B., Krsjak, V., Liedke, M.O., Butterling, M., Wagner, A., Polcar, T.

“…[Display omitted] •Mechanical and structural properties of ion (C, Si, or Cu) irradiated Zr/Nb NMMs are highly dependent on thickness and damage.•Thin…”
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Tribological properties of Mo-S-C coating deposited by pulsed d.c. magnetron sputtering by Vitu, T., Huminiuc, T., Doll, G., Bousser, E., Matthews, A., Polcar, T.

“…Transition metal dichalcogenides such as MoS2 are widely used as solid lubricants for vacuum applications. On the other hand, diamond-like carbon coatings…”
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Sliding properties of Zr-DLC coatings: The effect of tribolayer formation by Vitu, T., Escudeiro, A., Polcar, T., Cavaleiro, A.

“…Amorphous carbon-based coatings (DLC) exhibit excellent mechanical and tribological properties such as high hardness, high elastic modulus, low friction and…”
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Influence of Ag content on mechanical and tribological behavior of DLC coatings by Manninen, N.K., Ribeiro, F., Escudeiro, A., Polcar, T., Carvalho, S., Cavaleiro, A.

“…Ag–DLC coatings with Ag contents ranging from 1.3at.% to 13.1at.% were deposited by DC magnetron sputtering. The coatings were characterized with respect to…”
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