Production of biologically inert Teflon thin layers on the surface of allergenic metal objects by pulsed laser deposition technology

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6 Citations (Scopus)

Abstract

Allergic-type disease are current nowadays, and they are frequently caused by certain metals. We demonstrated that the metal objects can be covered by Teflon protective thin layers using a pulsed laser deposition procedure. An ArF excimer laser beam was focused onto the surface of pressed PTFE powder pellets; the applied fluences were 7.5-7.7 J/cm2. Teflon films were deposited on fourteen-carat gold, silver and titanium plates. The number of ablating pulses was 10 000. Post-annealing of the films was carried out in atmospheric air at oven temperatures between 320 and 500°C. The thickness of the thin layers was around 5 μm. The prepared films were granular without heat treatment or after annealing at a temperature below 340°C. At 360°C a crystalline, contiguous, smooth, very compact and pinhole-free thin layer was produced; a melted and re-solidified morphology was observed above 420°C. The adhesion strength between the Teflon films and the metal substrates was determined. This could exceed 1-4 MPa depending on the treatment temperature. It was proved that the prepared Teflon layers can be suitable for prevention of contact between the human body and allergen metals and so for avoidance of metal allergy.

Original languageEnglish
Pages (from-to)731-735
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Volume76
Issue number5
DOIs
Publication statusPublished - Mar 2003

Fingerprint

teflon (trademark)
Polytetrafluoroethylene
Pulsed laser deposition
Polytetrafluoroethylenes
pulsed laser deposition
Metals
metals
Annealing
Allergens
gold coatings
Allergies
annealing
avoidance
Bond strength (materials)
ovens
human body
Excimer lasers
Ovens
pinholes
Titanium

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

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title = "Production of biologically inert Teflon thin layers on the surface of allergenic metal objects by pulsed laser deposition technology",
abstract = "Allergic-type disease are current nowadays, and they are frequently caused by certain metals. We demonstrated that the metal objects can be covered by Teflon protective thin layers using a pulsed laser deposition procedure. An ArF excimer laser beam was focused onto the surface of pressed PTFE powder pellets; the applied fluences were 7.5-7.7 J/cm2. Teflon films were deposited on fourteen-carat gold, silver and titanium plates. The number of ablating pulses was 10 000. Post-annealing of the films was carried out in atmospheric air at oven temperatures between 320 and 500°C. The thickness of the thin layers was around 5 μm. The prepared films were granular without heat treatment or after annealing at a temperature below 340°C. At 360°C a crystalline, contiguous, smooth, very compact and pinhole-free thin layer was produced; a melted and re-solidified morphology was observed above 420°C. The adhesion strength between the Teflon films and the metal substrates was determined. This could exceed 1-4 MPa depending on the treatment temperature. It was proved that the prepared Teflon layers can be suitable for prevention of contact between the human body and allergen metals and so for avoidance of metal allergy.",
author = "B. Hopp and T. Smausz and N. Kresz and P. Nagy and A. Juh{\'a}sz and F. Ign{\'a}cz and Z. M{\'a}rton",
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T1 - Production of biologically inert Teflon thin layers on the surface of allergenic metal objects by pulsed laser deposition technology

AU - Hopp, B.

AU - Smausz, T.

AU - Kresz, N.

AU - Nagy, P.

AU - Juhász, A.

AU - Ignácz, F.

AU - Márton, Z.

PY - 2003/3

Y1 - 2003/3

N2 - Allergic-type disease are current nowadays, and they are frequently caused by certain metals. We demonstrated that the metal objects can be covered by Teflon protective thin layers using a pulsed laser deposition procedure. An ArF excimer laser beam was focused onto the surface of pressed PTFE powder pellets; the applied fluences were 7.5-7.7 J/cm2. Teflon films were deposited on fourteen-carat gold, silver and titanium plates. The number of ablating pulses was 10 000. Post-annealing of the films was carried out in atmospheric air at oven temperatures between 320 and 500°C. The thickness of the thin layers was around 5 μm. The prepared films were granular without heat treatment or after annealing at a temperature below 340°C. At 360°C a crystalline, contiguous, smooth, very compact and pinhole-free thin layer was produced; a melted and re-solidified morphology was observed above 420°C. The adhesion strength between the Teflon films and the metal substrates was determined. This could exceed 1-4 MPa depending on the treatment temperature. It was proved that the prepared Teflon layers can be suitable for prevention of contact between the human body and allergen metals and so for avoidance of metal allergy.

AB - Allergic-type disease are current nowadays, and they are frequently caused by certain metals. We demonstrated that the metal objects can be covered by Teflon protective thin layers using a pulsed laser deposition procedure. An ArF excimer laser beam was focused onto the surface of pressed PTFE powder pellets; the applied fluences were 7.5-7.7 J/cm2. Teflon films were deposited on fourteen-carat gold, silver and titanium plates. The number of ablating pulses was 10 000. Post-annealing of the films was carried out in atmospheric air at oven temperatures between 320 and 500°C. The thickness of the thin layers was around 5 μm. The prepared films were granular without heat treatment or after annealing at a temperature below 340°C. At 360°C a crystalline, contiguous, smooth, very compact and pinhole-free thin layer was produced; a melted and re-solidified morphology was observed above 420°C. The adhesion strength between the Teflon films and the metal substrates was determined. This could exceed 1-4 MPa depending on the treatment temperature. It was proved that the prepared Teflon layers can be suitable for prevention of contact between the human body and allergen metals and so for avoidance of metal allergy.

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