Nitrogen plasma-based ion implantation of poly(tetrafluoroethylene): effect of the main parameters on the surface properties
  • Metaadatok
Tartalom: http://dx.doi.org/10.1016/j.apsusc.2010.04.021
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published





Type = Article
Cím:
Nitrogen plasma-based ion implantation of poly(tetrafluoroethylene): effect of the main parameters on the surface properties
Létrehozó:
Kereszturi, Klára
Tóth, András
Mohai, Miklós
Bertóti, Imre
Szépvölgyi, János
Kiadó:
Elsevier
Dátum:
2010
Téma:
QC01 Mechanics / mechanika
QC04 Electricity. Magnetism. Electromagnetism / villamosság, mágnesesség, elektromágnessesség
QD01 Analytical chemistry / analitikai kémia
T2 Technology (General) / műszaki tudományok általában
TP Chemical technology / vegyipar, vegyészeti technológia
Tartalmi leírás:
The surface of poly(tetrafluoroethylene) (PTFE or Teflon) was treated by nitrogen plasma-based ion implantation. Accelerating voltages between 15 and 30 kV, fluences between 1x10to17 and 3x10to17 cm-2 and fluence rates between 3x10to13 and 7x10to13 cm-2 s-1 were applied. The effects of these main parameters were examined on the evolution of surface chemical composition, mean roughness, abrasive wear, wettability and surface electrical resistance. The aim was to obtain relationships, enabling to control the surface properties examined.
The F/C atomic ratio determined by XPS strongly decreased, correlating inversely with voltage. The mean surface roughness characterized by topography measurements, increased, correlating directly with fluence and inversely with voltage. The wear volume obtained by multipass scratch tests did not show clear relationship with the main process parameters, however, it increased upon treatment with the increase of surface roughness and O/C atomic ratio. The water contact angle increased at low voltages and high fluences, due to preferential increase of roughness, and decreased at high voltages and low fluences, owing to intense defluorination and incorporation of N and O. The electrical resistance of the PBII-treated surfaces decreased by several orders of magnitude, showing a significant inverse correlation with fluence. It continued to decrease for samples exposed to air, primarily after treatments performed with low fluences, due to post-treatment type oxidation.
Típus:
Article
PeerReviewed
Formátum:
text
Azonosító:
Kereszturi, Klára and Tóth, András and Mohai, Miklós and Bertóti, Imre and Szépvölgyi, János (2010) Nitrogen plasma-based ion implantation of poly(tetrafluoroethylene): effect of the main parameters on the surface properties. Applied Surface Science, 256. pp. 6385-6389. ISSN 0169-4332
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