RT Journal Article
T1 Tribological study of lubricious DLC biocompatible coatings
A1 Brizuela, M.
A1 Garcia-Luis, A.
A1 Viviente, J. L.
A1 Braceras, I.
A1 Oñate, J. I.
AB DLC (diamond-like carbon) coatings have remarkable tribological properties due mainly to their good frictional behavior. These coatings can be applied in many industrial and biomedical applications, where sliding can generate wear and frictional forces on the components, such as orthopaedic metal implants. This work reports on the development and tribological characterization of functionally gradient titanium alloyed DLC coatings. A PVD-magnetron sputtering technique has been used as the deposition method. The aim of this work was to study the tribological performance of the DLC coating when metal to metal contact (cobalt chromium or titanium alloys) takes place under dry and lubricated test conditions. Prior work by the authors demonstrates that the DLC coating reduced considerably the wear of the ultra-high-molecular-weight polyethylene (UHMWPE). The DLC coating during mechanical testing exhibited a high elastic recovery (65%) compared to the values obtained from Co-Cr-Mo (15%) and Ti-6AI-4V (23%). The coating exhibited an excellent tribo-performance against the Ti-6AI-4V and Co-Cr-Mo alloys, especially under dry conditions presenting a friction value of 0.12 and almost negligible wear. This coating has passed biocompatibility tests for implant devices on tissue/bone contact according to international standards (ISO 10993).
SN 0957-4530
YR 2002
FD 2002-12-01
LA eng
NO Brizuela , M , Garcia-Luis , A , Viviente , J L , Braceras , I & Oñate , J I 2002 , ' Tribological study of lubricious DLC biocompatible coatings ' , Journal of Materials Science: Materials in Medicine , vol. 13 , no. 12 , pp. 1129-1133 . https://doi.org/10.1023/A:1021129718737
NO The authors are grateful for the financial support granted by the Spanish Ministry of Science and Technology (MICYT) under project No MAT 2001-1399-C02-02.
DS TECNALIA Publications
RD 29 jun 2024