Electrophoretic deposition of carbon nanotube-reinforced hydroxyapatite bioactive layers on Ti-6Al-4V alloys for biomedical applications


KAYA C.

CERAMICS INTERNATIONAL, cilt.34, ss.1843-1847, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 34 Konu: 8
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1016/j.ceramint.2007.06.007
  • Dergi Adı: CERAMICS INTERNATIONAL
  • Sayfa Sayıları: ss.1843-1847

Özet

Ultra-fine (20 nm) hydroxyapatite powders-reinforced with multi-walled carbon nanotubes were coated on Ti-6Al-4V medical alloy using electrophoretic deposition in an attempt to increase poor mechanical properties of hydroxyapatite, in particular inter-laminar shear strength between coating layer and implant surface. It is shown that the addition of carbon nanotubes increases both hardness, elastic modulus and inter-laminar shear strength of monolithic hydroxyapatite layers. A deposit thickness of 25 mu m is also found to be critical for preventing crack formation during sintering. (C) 2007 Elsevier Ltd and Techna Group S.r.l. All rights reserved.