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| Naji, M. |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Casati, R. |
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| Azam, Siraj |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Pshyk, Oleksander
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Publications (5/5 displayed)
- 2020Stabilization of complex orthorhombic o-Cr3C2 thin films under high energetic growth conditions: Experiments and calculationscitations
- 2019Low-temperature growth of epitaxial Ti <inf>2</inf> AlC MAX phase thin films by low-rate layer-by-layer PVDcitations
- 2018Structural and mechanical characterization of (TiZrNbHfTa)N/WN multilayered nitride coatingscitations
- 2018Microstructure, phase composition and mechanical properties of novel nanocomposite (TiAlSiY)N and nano-scale (TiAlSiY)N/MoN multifunctional heterostructurescitations
- 2018A new type of (TiZrNbTaHf)N/MoN nanocomposite coating: Microstructure and properties depending on energy of incident ionscitations
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article
Stabilization of complex orthorhombic o-Cr3C2 thin films under high energetic growth conditions: Experiments and calculations
Abstract
We report on the deposition and characterization of hard and wear resistant orthorhombic Cr3C2 thin films. Films are deposited using a novel linear filtered cathodic arc (LFCA) at high energetic conditions and relatively low substrate temperatures (&lt;200 °C). The deposited films have amorphous (a-Cr3C2), nanocrystalline (nc-Cr3C2) and orthorhombic (o-Cr3C2) structure by carefully tuning the growth process via the ion current density and substrate bias voltage. The o-Cr3C2 films presented a moderate stress (−5.3 GPa), low coefficient of friction, low nanowear and high hardness values (33.4 GPa) exceeding in almost 12 GPa the reported hardness values for bulk Cr3C2 (21.5 GPa). Here we show that the generation and relief of compressive stresses in the Cr3C2 films can be controlled through the energy delivered during the growth. The effect of stresses generated by ion bombardment on the mechanical properties of the films was comprehensively studied utilizing ab-initio calculations and compared with experimental results. The hardness increment with compressive stress cannot be assigned only to changes in the electronic structure, but also due to specific microstructural features and chemical bonding of the films. The possibility to deposit the o-Cr3C2 protective films at relatively low temperature on temperature-sensitive substrates shows its potential for industrial applications. © 2020 Elsevier B.V.