Title :
Wear and friction of titanium nitride on ultra high molecular weight polyethylene in articulating orthopedic applications
Author :
Jacobson, David ; Pappas, Michael
Author_Institution :
Dept. of Biomed. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
An oscillating tribometer was used to investigate the wear mechanisms of TiN (titanium nitride) on UHMWPe (ultra high-molecular-weight polyethylene), oscillating either a coating/substrate system (TiN/Ti-6Al-4V) or a CoCr (cobalt chromium) coupon, for control, on three pins of UHMWPe in a planar configuration. Oscillations were carried out to 10-million cycles in order to discover and evaluate long-term wear mechanisms. Mass differentials, profilometries, and torque were established for each test at specific intervals producing wear volumes and rates, and a measure of any alteration of physical condition during each test. Analysis of the results reveals parameters for optimizing the TiN coating on orthopedic implants.
Keywords :
friction; prosthetics; titanium compounds; wear; wear resistant coatings; CoCr; TiN; TiN-TiAlV; articulating orthopedic applications; coating/substrate system; friction; long-term wear mechanisms; mass differentials; orthopedic implants; oscillating tribometer; physical condition; planar configuration; profilometries; torque; ultra high molecular weight polyethylene; ultra high-molecular-weight polyethylene; wear mechanisms; wear volumes; Chromium; Coatings; Cobalt; Friction; Orthopedic surgery; Polyethylene; Testing; Tin; Titanium; Tribology;
Conference_Titel :
Bioengineering Conference, 1992., Proceedings of the 1992 Eighteenth IEEE Annual Northeast
Conference_Location :
Kingston, RI, USA
Print_ISBN :
0-7803-0902-2
DOI :
10.1109/NEBC.1992.285980
