dc.creator | Broitman, E. | |
dc.creator | Furlan, A. | |
dc.creator | Gueorguiev, G.K. | |
dc.creator | Czigány, Zs. | |
dc.creator | Tarditi, Ana Maria | |
dc.creator | Gellman, Andrew J | |
dc.creator | Stafström, S. | |
dc.creator | Hultman, L. | |
dc.date.accessioned | 2018-08-24T18:04:11Z | |
dc.date.accessioned | 2018-11-06T16:13:53Z | |
dc.date.available | 2018-08-24T18:04:11Z | |
dc.date.available | 2018-11-06T16:13:53Z | |
dc.date.created | 2018-08-24T18:04:11Z | |
dc.date.issued | 2009-12 | |
dc.identifier | Broitman, E.; Furlan, A.; Gueorguiev, G.K.; Czigány, Zs.; Tarditi, Ana Maria; et al.; Water adsorption on phosphorous-carbide thin films; Elsevier Science Sa; Surface and Coatings Technology; 204; 6-7; 12-2009; 1035-1039 | |
dc.identifier | 0257-8972 | |
dc.identifier | http://hdl.handle.net/11336/57036 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1905844 | |
dc.description.abstract | Amorphous phosphorous-carbide films have been considered as a new tribological coating material with unique electrical properties. However, such CPx films have not found practical use until now because they tend to oxidize/hydrolyze rapidly when in contact with air. Recently, we demonstrated that CPx thin films with a fullerene-like structure can be deposited by magnetron sputtering, whereby the structural incorporation of P atoms induces the formation of strongly bent and inter-linked graphene planes. Here, we compare the uptake of water in fullerene-like phosphorous-carbide (FL-CPx) thin films with that in amorphous phosphorous-carbide (a-CPx), and amorphous carbon (a-C) thin films. Films of each material were deposited on quartz crystal substrates by reactive DC magnetron sputtering to a thickness in the range 100-300 nm. The film microstructure was characterized by X-ray photoelectron spectroscopy, and high resolution transmission electron microscopy. A quartz crystal microbalance placed in a vacuum chamber was used to measure their water adsorption. Measurements indicate that FL-CPx films adsorbed less water than the a-CPx and a-C ones. To provide additional insight into the atomic structure of defects in the FL-CPx and a-CPx compounds, we performed first-principles calculations within the framework of density functional theory. Cohesive energy comparison reveals that the energy cost formation for dangling bonds in different configurations is considerably higher in FL-CPx than for the amorphous films. Thus, the modeling confirms the experimental results that dangling bonds are less likely in FL-CPx than in a-CPx and a-C films. | |
dc.language | eng | |
dc.publisher | Elsevier Science Sa | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.surfcoat.2009.06.003 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | Phosphorous carbide | |
dc.subject | Dangling bonds | |
dc.subject | Water adsorption | |
dc.subject | Density functional theory | |
dc.title | Water adsorption on phosphorous-carbide thin films | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |