| 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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De With, Gijsbertus
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2022Distribution of block copolymers in drying polymer filmscitations
- 2021Surface segregation of polydimethylsiloxane-polyether block copolymers in coatings driven by molecular architecturecitations
- 2019Design of dual hydrophobic–hydrophilic polymer networks for highly lubricious polyether-urethane coatingscitations
- 2015Chemical Mapping of Silica Prepared via Sol-Gel Reaction in Rubber Nanocompositescitations
- 2015Multi-scale simulations for predicting materials properties of a cross-linked polymercitations
- 2015From homogeneous to phase separated UV-cured Interpenetrating Polymer Networks: Influence of the system composition on properties and microstructure
- 2014A simulation approach to study photo-degradation processes of polymeric coatingscitations
- 2009Preemptive healing through supramolecular cross-linkscitations
- 2006Buckle morphology of compressed inorganic thin layers on a polymer substratecitations
- 2002Fracture toughness and adhesion energy of sol-gel coatings on glasscitations
- 2002Measuring mechanical properties of coatings : a methodology applied to nano-particle-filled sol-gel coatings on glasscitations
- 2000Determination of the elastic modulus and hardness of sol-gel coatings on glass: influence of indenter geometrycitations
Places of action
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article
Determination of the elastic modulus and hardness of sol-gel coatings on glass: influence of indenter geometry
Abstract
Indentations have been carried out on methyltrimethoxysilane coated float glass by using a spherical and a Berkovich indenter. The composite hardness as well as the effective elastic modulus were determined as a function of indentation depth for coatings of a thickness 0.5, 2 and 4 µm. Using the Berkovich indenter, the coating exhibited radial cracking (only for the two thicker coatings), delamination and chipping, whereas no cracking occurred during indentations using a spherical indenter. For the experiments in which the coatings exhibited radial cracking, we measured a constant composite hardness over the whole depth range instead of the expected increase. The elastic modulus, on the other hand, turned out to be insensitive to the radial cracking. All results show the expected increase of the modulus with indentation depth. The spherical indenter showed a much steeper rise of the effective elastic modulus with indentation depth than the (sharp) Berkovich indenter. By re-scaling the results with respect to contact area instead of indentation depth, the Berkovich and the sphere elastic moduli are comparable. Only at the point where delamination occurred in the Berkovich indentations, the re-scaled results of the two indenter geometries start to deviate.