| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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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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Coulombier, Michaãl
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Combining nano-DIC and ACOM TEM to study the ductility enhancement of aluminium films by grain boundary sliding
- 2022Fracture properties and environmentally assisted subcritical crack growth of thin freestanding Al2O3, SiO2 and SiN films using residual stress-induced crack-on-a-chip testing technique
- 2019Crack on a chip test method for thin freestanding filmscitations
- 2018Kinked silicon nanowires-enabled interweaving electrode configuration for lithium-ion batteriescitations
- 2015Fracture mechanics based analysis of the scratch resistance of thin brittle coatings on a soft interlayercitations
- 2013Lab-on-chip for in- and ex-situ characterization of the mechanical response of nano-objects
- 2013Inter- and intragranular plasticity mechanisms in ultrafine-grained Al thin films: An in situ TEM studycitations
- 2012Nanomechanical lab on-chip for testing thin film materials and application to Al and Al(Si)
- 2011Point Defect Clusters and Dislocations in FIB Irradiated Nanocrystalline Aluminum Films: An Electron Tomography and Aberration-Corrected High-Resolution ADF-STEM Studycitations
- 2010Strain gradient plasticity analysis of the strength and ductility of thin metallic films using an enriched interface modelcitations
- 2009MEMS-based microstructures for nanomechanical characterization of thin filmscitations
- 2007Multipurpose nanomechanical testing machines revealing the size-dependent strength and high ductility of pure aluminium submicron filmscitations
Places of action
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article
Fracture mechanics based analysis of the scratch resistance of thin brittle coatings on a soft interlayer
Abstract
The scratch resistance of thin brittle coatings deposited on rigid substrates with a soft intermediate layer has been characterized by instrumented nanoscratch testing in order to identify the damage mechanisms. Several "hard thin film/polymer/rigid substrate" multilayers have been addressed with varying compositions and thicknesses. The relevance of the use of nanoscratch with respect to end-user performances has been confirmed by the analysis of the damage and cracking mechanisms triggered by more empirical tests. The scratch wear resistance behavior is interpreted in the light of fracture mechanics since the dominant damage mode is the cracking of the brittle film. This behavior is related to the mechanical properties of the individual layers, e.g. elastic modulus, hardness, fracture toughness, internal stress, and to soft interlayer thickness. The influence of the soft interlayer on the enhancement of the cracking energy release rate in the coating plays a major role, depending directly on the elastic mismatch and adhesion characteristics. The fracture toughness and adhesion of the hard coating jointly determine the morphology and the extension of the crack density and the amount of delamination, whereas the soft interlayer thickness controls the scratch depth. The constraint effect induced by the rigid substrate for thinner interlayer thicknesses favors the cracking of the hard coating despite lower scratch depths.