| 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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Cohen, Sidney
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2023Guided Search to Self-Healing in Semiconductorscitations
- 2022Polymer Gel with Tunable Conductive Properties: A Material for Thermal Energy Harvesting
- 2022Electronic interactions and stability issues at the copper-graphene interface in air and in alkaline solution under electrochemical controlcitations
- 2019Oxygen vacancy ordering and viscoelastic mechanical properties of doped ceria ceramicscitations
- 2019A Nanoscopic View of Photoinduced Charge Transfer in Organic Nanocrystalline Heterojunctionscitations
- 2018Decoration of Inorganic Nanostructures by Metallic Nanoparticles to Induce Fluorescence, Enhance Solubility, and Tune Band Gapcitations
- 2018Microstructure and nanohardness of Ag and Ni under friction in boundary lubricationcitations
- 2018Self-Assembled Hybrid Materials Based on Organic Nanocrystals and Carbon Nanotubescitations
- 2017Self-supported Gd-doped ceria films for electromechanical actuationcitations
- 2015The gizzard plates in the Cephalaspidean gastropod Philine quadripartitacitations
- 2015Metal-organic microstructurescitations
- 2014Novel poly(3-hydroxybutyrate) nanocomposites containing WS2 inorganic nanotubes with improved thermal, mechanical and tribological propertiescitations
- 2013Osteonal lamellae elementary unitscitations
- 2013New deposition technique for metal films containing inorganic fullerene-like (IF) nanoparticlescitations
- 2013The Nature of Interfaces in Al-1050/Al-1050 and Al-1050/Mg-AZ31 Couples Joined by Magnetic Pulse Welding (MPW)citations
- 2012An international round-robin calibration protocol for nanoindentation measurementscitations
- 2012Influence of Gd content on the room temperature mechanical properties of Gd-doped ceriacitations
- 2012Zirconium vacuum arc operation in a mixture of Ar and O 2 gasescitations
- 2012Nanoindentation of osteonal bone lamellaecitations
- 2011Alleviating fatigue and failure of NiTi endodontic files by a coating containing inorganic fullerene-like WS2 nanoparticlescitations
- 2010Nanoindentation measurements and mechanical testing of as-soldered and aged Sn-0.7Cu lead-free miniature jointscitations
- 2010A novel experimental method for the local mechanical testing of human coronal dentincitations
- 2009Compressive response of dentin micro-pillarscitations
- 2007Microscopic investigation of shear in multiwalled nanotube deformationcitations
- 2007Insights into the Structure and Domain Flexibility of Full-Length Pro-Matrix Metalloproteinase-9/Gelatinase Bcitations
- 2006Sequence dependence of charge transport properties of DNAcitations
- 2004Non-crystalline pyroelectric BaTiO3 thin filmscitations
- 2001Nanoscale shear and indentation measurements in transcrystalline α-isotactic polypropylenecitations
- 2001Mechanics and dynamics of transcrystalline alpha-isotactic polypropylene at the nanoscale
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article
Microstructure and nanohardness of Ag and Ni under friction in boundary lubrication
Abstract
<p>Microstructure Grains Dislocations Friction Wear Lubrication.</p><p>Evolution of deformation microstructure and nanohardness of Ag and Ni after friction in the BL regime was studied. All friction tests were conducted under lubricated conditions using a pin-on-disk rig. Pure fee metals such as Ag and Ni, with different SFE (16 and 125 mJm(-2), respectively), were chosen as pin materials. Cross sectional transmission electron microscopy (TEM) lamellae were prepared from the pins using a focused ion beam (FIB). Using TEM, we analysed the regions of the pins that are in steady state after friction; the friction coefficient (mu) and hardness (H-s) remained unchanged with deformation in the BL regime. After the wear tests, the specimens were cross-sectioned in longitudinal and transverse directions (parallel and perpendicular to the direction of friction). Nanoindentations were performed using a Berkovich diamond tip. A gradient of grain sizes during the friction of Ag and Ni in BL regime was revealed by TEM imaging. Deformation twinning followed by limited recovery within the surface of Ag led to the formation of a relatively thick top layer of ultra-fine equiaxial grains. Thermally activated processes for the rearrangement and annihilation of dislocations are accelerated during the friction of Ni due to high SFE and contact temperature. Cross-sectional microstructures observed normal and parallel to the direction of friction are dissimilar. Steady state values of grain size, d(s), and hardness, H-s, after friction in lubricated conditions are explained by the balance between hardening and dynamic recovery in surface layers, and they strongly depend on the SFE and temperature. A correlation between the wear properties (wear coefficient) and total work of deformation during nanoindentation shows a similarity in the nano- and microscales in lubricated friction.</p>