Pulsed laser deposition of compact high adhesion polytetrafluoroethylene thin films

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Polytetrafluoroethylene (PTFE) thin films were prepared from pressed powder pellets via pulsed laser deposition by using ArF (193 nm) excimer laser. The applied laser fluences were in the 1.6-10 J cm-2 range, the substrate temperature was varied between 27°C and 250°C and post-annealing of the films was carried out in air at temperatures between 320°C and 500°C. Films deposited at 250°C substrate temperature were found to be stoichiometric while those prepared at lower temperatures were fluorine deficient. Morphological analyses proved that the film thickness did not significantly depend on the substrate temperature and the post annealing at 500°C resulted in a thickness reduction of approximately 50%. It was demonstrated that the films prepared at 8.2 J cm-2 fluence and annealed at 500°C followed by cooling at 1°C min-1 rate were compact, pinhole-free layers. The adherence of films to the substrates was determined by tensile strength measurements. Tensile strength values up to 2.4 MPa were obtained. These properties are of great significance when PTFE films are fabricated for the purpose of protecting coatings.

Original languageEnglish
Pages (from-to)1859-1863
Number of pages5
JournalJournal of Physics D: Applied Physics
Volume35
Issue number15
DOIs
Publication statusPublished - Aug 7 2002

Fingerprint

polytetrafluoroethylene
Polytetrafluoroethylene
Pulsed laser deposition
Polytetrafluoroethylenes
pulsed laser deposition
adhesion
Adhesion
Thin films
thin films
Substrates
tensile strength
fluence
Tensile strength
Temperature
Annealing
annealing
temperature
Fluorine
Excimer lasers
pinholes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Pulsed laser deposition of compact high adhesion polytetrafluoroethylene thin films. / Smausz, T.; Hopp, B.; Kresz, N.

In: Journal of Physics D: Applied Physics, Vol. 35, No. 15, 07.08.2002, p. 1859-1863.

Research output: Contribution to journalArticle

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