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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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Den Toonder, Jaap M. J.
Eindhoven University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2023Fully Transparent, Ultrathin Flexible Organic Electrochemical Transistors with Additive Integration for Bioelectronic Applicationscitations
- 2023Single Hydrogel Particle Mechanics and Dynamics Studied by Combining Capillary Micromechanics with Osmotic Compressioncitations
- 2023Round lumen-based microfluidic devices for modelling cancer metastasis
- 2023Nanomagnetic Elastomers for Realizing Highly Responsive Micro- and Nanosystemscitations
- 2023Nanomagnetic Elastomers for Realizing Highly Responsive Micro- and Nanosystemscitations
- 2022A Prototype System with Custom-Designed RX ICs for Contrast-Enhanced Ultrasound Imagingcitations
- 2017Microfluidic magnetic bead conveyor beltcitations
- 2017Magnetofluidic conveyor belt
- 2014Monocytic cells become less compressible but more deformable upon activationcitations
- 2012Magnetically actuated artificial cilia : the effect of fluid inertiacitations
- 2011Magnetically-actuated artificial cilia for microfluidic propulsioncitations
- 2009Numerical simulation of flat-tip micro-indentation of glassy polymers: influence of loading speed and thermodynamic statecitations
- 2007Micro-mechanical testing of SiLK by nanoindentation and substrate curvature techniquescitations
- 2006Indentation: the experimenter's holy grail for small-scale polymer characterization?
- 2006Buckle morphology of compressed inorganic thin layers on a polymer substratecitations
- 2005Viscoelastic characterization of low-dielectric-constant SiLK films using nano-indentation in combination with finite element modelingcitations
- 2005Finite thickness influence on spherical and conical indentation on viscoelastic thin polymer filmcitations
- 2005On factors affecting the extraction of elastic modulus by nanoindentation of organic polymer filmscitations
- 2004Mechanical characterization of SiLK by nanoindentation and substrate curvature techniquescitations
- 2004Optimization of mechanical properties of thin free-standing metal films for RF-MEMScitations
- 2004Optimization of mechanical properties of thin free-standing metal films for RF-MEMScitations
- 2003Residual stresses in multilayer ceramic capacitors: measurement and computationcitations
- 2003Influence of visco-elasticity of low-k dielectrics on thermo-mechanical behavior of dual damascene processcitations
- 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
- 2000The effect of friction on scratch adhesion testing : application to a sol-gel coating on polypropylenecitations
Places of action
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article
The effect of friction on scratch adhesion testing : application to a sol-gel coating on polypropylene
Abstract
The scratch test has long been used to study the adhesion of coatings. In this test an indenter is drawn across the surface of a coating under an increasing (continuous or stepwise) load. The load (normal to the surface) at which detachment of the coating occurs is termed the critical load. Usually, the magnitude of the critical load is related to the adhesion between the substrate and the coating by some theoretical model. It is well known that apart from the adhesion the critical load depends on several other parameters including the friction coefficient. In this paper a review of theoretical models applicable to scratch adhesion testing is given. Experimental data is used to compare the ability of these theoretical models to describe the effect of friction between the indenter and the coating on the critical load. We applied the scratch test to a model system consisting of a (hybrid) sol-gel coating deposited on polypropylene. The friction coefficient between indenter and coating was varied by a short plasma modification of the surface of the coating, while all other relevant parameters (i.e. interfacial adhesion, layer thickness, E-modulus of the coating, etc.) remained constant. The critical load (normal to the surface) showed a pronounced decrease of more than an order of magnitude with increasing friction coefficient. Several models are discussed and compared to the experimental data. In addition, the effect of substrate pretreatment on coating adhesion was studied. The adhesion of the sol-gel coating induced by microwave oxygen plasma modification of polypropylene is considerably better than the adhesion obtained by wet-chemical modification in chromo-sulfuric acid at room temperature. The adhesion induced by immersion in chromosulfuric acid is shown to be independent of the immersion time between 1 and 10 min.