Tribological Properties of 1-Alkenes on Copper Foils: Effect of Low-Coordination Surface Sites

dc.creatorMiller, Brendan Paul
dc.creatorFurlong, Octavio Javier
dc.creatorTysoe, Wilfred T.
dc.date2013-06
dc.identifierhttp://hdl.handle.net/11336/5669
dc.identifierMiller, Brendan Paul; Furlong, Octavio Javier; Tysoe, Wilfred T.; Tribological Properties of 1-Alkenes on Copper Foils: Effect of Low-Coordination Surface Sites; Springer; Tribology Letters; 51; 3; 6-2013; 357-363
dc.identifier1023-8883
dc.descriptionIt has been suggested from molecular dynamics simulations that low-coordination-number sites are produced at a sliding metal–metal interface, but, because of their instability, they may rapidly relax to increase their coordination number. The possible presence of such low-coordination sites on the surface is tested by exploiting the observation that the desorption temperatures of 1-alkenes on copper increase with both the number of carbons atoms in the 1-alkenes and the surface roughness. Thus, 1-alkenes desorb from a Cu(111) single crystal, with relatively few low-coordination sites, at temperatures between 60 and 100 K lower than from a polycrystalline copper foil. The decrease in friction after impinging a flux of various 1-alkenes on a copper foil, while rubbing in an ultrahigh vacuum tribometer, correlates very well with the corresponding 1-alkene coverages on a copper foil, estimated using the desorption kinetics. This suggests either that rubbing does not result in the formation of lower-coordination sites or that they relax sufficiently rapidly that they do not influence the surface chemistry of 1-alkenes. Surface analyses indicate that shear at the interface causes carbon to diffuse into the subsurface region to form a tribofilm.
dc.descriptionFil: Miller, Brendan Paul. University of Wisconsin–Milwaukee. Department of Chemistry and Laboratory for Surface Studies; Estados Unidos
dc.descriptionFil: Furlong, Octavio Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Física Aplicada; Argentina
dc.descriptionFil: Tysoe, Wilfred T.. University of Wisconsin–Milwaukee. Department of Chemistry and Laboratory for Surface Studies; Estados Unidos
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherSpringer
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs11249-013-0168-0
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1007/s11249-013-0168-0
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subjectCopper Foils
dc.subject1-Alkenes
dc.subjectFriction
dc.subjectAuger Analysis
dc.subjecthttps://purl.org/becyt/ford/1.4
dc.subjecthttps://purl.org/becyt/ford/1
dc.titleTribological Properties of 1-Alkenes on Copper Foils: Effect of Low-Coordination Surface Sites
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


Este ítem pertenece a la siguiente institución