| 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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Mcmaster, Sj
Coventry University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023Soldering tip and method
- 2023Selective soldering nozzles
- 2023Utilising H/E to predict fretting wear performance of DLC coating systemscitations
- 2023Utilising H/E to predict fretting wear performance of DLC coating systemscitations
- 2023Analysis of Pre-Treatment Processes to Enable Electroplating on Nitrided Steel
- 2023The challenges in selective soldering and meeting training needs
- 2023Braze head and method
- 2022Contact size effects on the friction and wear of amorphous carbon filmscitations
- 2021Friction and electrical contact resistance in reciprocating nano-scale wear testing of metallic materialscitations
- 2021Influence of Si- and W- doping on micro-scale reciprocating wear and impact performance of DLC coatings on hardened steelcitations
- 2021Nanomechanical Characterisation of Diamond-Like Carbon Coatings for Tribological Performance
- 2020Probing fatigue resistance in multi-layer DLC coatings by micro- and nano-impact: Correlation to erosion testscitations
- 2020Probing fatigue resistance in multi-layer DLC coatings by micro- and nano-impactcitations
Places of action
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article
Contact size effects on the friction and wear of amorphous carbon films
Abstract
Since different properties of coating systems influence their friction and wear at different length scales contact size can play a critical role in microtribological experiments. In this study the behaviour of 3 different types of coating system which vary in terms of their thickness, substrate and mechanical properties has been investigated. The coatings were chosen for either their industrial relevance in automotive or MEMS applications, or as model coating systems. A wide range of nano/microtribological tests have been performed with different indenter geometries (tip sharpness), including single and repetitive scratch tests with unidirectional contact, and reciprocating wear tests, with depth and friction evolution monitored so that the relationships between failure mechanism and friction in coating systems with differing mechanical properties could be explored. The influence of surface topography on friction has been shown in ramped and constant load scratch tests. When fracture occurred resulting in a sudden increase in probe depth there was an abrupt decrease in friction which is ascribed to a contact area effect. In contrast, where deformation progressed through micro-wear a more gradual increase in depth can be associated with higher contact area and higher friction.