Wettability modification of titanium sheets induced by activated surface treatment (Articolo in rivista)

Type
Label
  • Wettability modification of titanium sheets induced by activated surface treatment (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Pinzari F., Ascarelli P., Cappelli E., Giorgi R. (2002)
    Wettability modification of titanium sheets induced by activated surface treatment
    in Langmuir
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Pinzari F., Ascarelli P., Cappelli E., Giorgi R. (literal)
Pagina inizio
  • 5457 (literal)
Pagina fine
  • 5461 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 18 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-IMIP ENEA (literal)
Titolo
  • Wettability modification of titanium sheets induced by activated surface treatment (literal)
Abstract
  • In this work, wettability properties of titanium sheets have been largely modified and controlled by a chemical activated surface treatment. The first step of surface modification, performed by a hydrogen and methane fluxing mixture activated by a hot tantalum filament, led to titanium sheets that were completely amphiphilic. Then wettability properties evolved toward different behaviors according to the post-treatment: no difference was observed if samples were put in an inert atmosphere such as N-2 or a vacuum, while a high hydrophobicity was developed if samples were exposed to air. Hydrophilicity and oleophilicity properties have been determined by water and alpha-bromonaphthalene contact angle measurements, respectively. Modifications induced have been characterized by X-ray photoelectron spectroscopy and have shown that our treatment induces a carburization of the titanium surface. Moreover, we found that the hydrophobic character, developed only in the presence of oxygen, is due to a partial reoxidation of the surface, which probably makes the surface less polar with respect to the untreated surface. (literal)
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Autore CNR

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