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


KAYA C.

CERAMICS INTERNATIONAL, vol.34, no.8, pp.1843-1847, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 8
  • Publication Date: 2008
  • Doi Number: 10.1016/j.ceramint.2007.06.007
  • Title of Journal : CERAMICS INTERNATIONAL
  • Page Numbers: pp.1843-1847

Abstract

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.