RT Journal Article
T1 Effects of ion implantation on Ti-6Al-4V on its frictional behaviour against UHMWPE
A1 Alonso, F.
A1 Ugarte, J. J.
A1 Sansom, D.
A1 Viviente, J. L.
A1 Oñate, J. I.
AB The aim of this work was to study the effect of carbon ion implantation and a DLC coating on the friction response of T1-6Al-4V/UHMWPE materials used for biomedical implants, and on the endurance of the protective oxide layer of the Ti alloy at increasing loads. Carbon implantation was carried out at doses ranging from 2 × 1017 to 10 × 1017 ions cm-2 and energies from 75 to 180 keV. This implantation procedure produced a more than twofold improvement in hardness, as evaluated by a dynamic micro-indentation technique at increasing loads from 0.4 to 10 mN. Dry pin-on-disc tribological tests, using an UHMWPE pin, showed that some of the implantation treatments effectively protected the surface of the Ti alloy, without producing a break in the protective passive oxide layer and exhibited low friction values, similar to those obtained in DLC coatings. No direct correlation has been found, however, between the hardening induced by ion implantation and the improved tribological response. Formation of TiC precipitates could account for the hardening effect observed after carbon implantation and, in addition, implantation may cause stabilisation of the protective oxide layer on the titanium surface.
SN 0257-8972
YR 1996
FD 1996-09
LK https://hdl.handle.net/11556/3731
UL https://hdl.handle.net/11556/3731
LA eng
NO Alonso , F , Ugarte , J J , Sansom , D , Viviente , J L & Oñate , J I 1996 , ' Effects of ion implantation on Ti-6Al-4V on its frictional behaviour against UHMWPE ' , Surface and Coatings Technology , vol. 83 , no. 1-3 , pp. 301-306 . https://doi.org/10.1016/0257-8972(96)02767-3
NO The authors are grateful for the financial support granted by the Spanish Comision Interministerial de Ciencia y Tecnologia-CICYT under project no. MAT93-0703-C03. The assistance provided by the Spanish Ministry of Science and Education (Action Integrada Ref. no. HA94-063A) is also acknowledged.
DS TECNALIA Publications
RD 30 jul 2024