Characteristic modification of UHMWPE by laser-assisted ion implantation

  • Lorusso A
  • Nassisi V
  • Velardi L
 et al. 
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Abstract

The purpose of this work is the characteristic modification by ion implantation of ultra high molecular weight polyethylene, and a preliminary study of its surface. This biomedical material has been chosen for its excellent chemical and physical properties. An ultraviolet-pulsed laser of 248nm was employed to produce, by laser ablation, C and Ti ions of different charges with current densities of the order of 10mA/cm2. The ions were accelerated by the application of a positive high voltage, 30kV, on the target support to accelerate ions to implant the polyethylene surfaces up to a depth of about 200nm. Preliminary results about surface properties indicate that implanted surfaces have higher wettability and micro-hardness values with respect to unimplanted ones.

Author-supplied keywords

  • Ion implantation
  • Laser-produced plasma
  • UHMWPE polyethylene

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