Rapid Thermal Characterization of Graphene Oxide-Nanocalorimetry as a Pathway for Novel Insights in Tribology

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dc.contributor.authorWoll, Karsten
dc.contributor.authorNeuhauser, Tobias
dc.contributor.authorAcuna, Camilo
dc.contributor.authorDiaz-Droguett, Donovan
dc.contributor.authorRosenkranz, Andreas
dc.date.accessioned2025-01-23T21:09:00Z
dc.date.available2025-01-23T21:09:00Z
dc.date.issued2019
dc.description.abstractThe use of solid lubricants such as graphene, graphene oxide, and other nanoparticles have gained notable attention in the tribological community to reduce friction and wear thus aiming at improved energy efficiency and sustainability. Tribological experiments unify rather extreme conditions such as high contact pressures, small contact areas, relative sliding motion, and rapid heating. This combination leads to mechanically- and/or thermally induced chemical, structural and microstructural modifications of the lubricating nanoparticles during rubbing thus altering their material's properties. Due to the high sensitivity, we propose nanocalorimetry as the method of choice to shed more light on the thermally-induced processes and changes. As a model material for solid lubricants, we explore the transitions of graphene oxide under heating with 1000 degrees C/s up to 600 degrees C using quasi-adiabatic nanocalorimetry. We identify a strong exothermic runaway reaction at 317 degrees C. This runaway is preceded by exothermic reactions between 75-125 degrees C, which are correlated with the release of intercalated species and the formation of CO and CO2.
dc.fuente.origenWOS
dc.identifier.doi10.3390/lubricants7110096
dc.identifier.eissn2075-4442
dc.identifier.urihttps://doi.org/10.3390/lubricants7110096
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100788
dc.identifier.wosidWOS:000502253500004
dc.issue.numero11
dc.language.isoen
dc.revistaLubricants
dc.rightsacceso restringido
dc.subjectnanocalorimetry
dc.subjectcarbon nanoparticles
dc.subjectgraphene oxide
dc.subjectadvanced materials characterization
dc.titleRapid Thermal Characterization of Graphene Oxide-Nanocalorimetry as a Pathway for Novel Insights in Tribology
dc.typeartículo
dc.volumen7
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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