Degradation of alumina and zirconia toughened alumina (ZTA) hip prostheses tested under microseparation conditions in a shock device

Autor:	Uribe, Juliana, Geringer, Jean, Gremillard, Laurent, Reynard, Bruno
Rok vydání:	2013
Předmět:	Physics - Medical Physics
Druh dokumentu:	Working Paper
DOI:	10.1016/j.triboint.2012.10.002
Popis:	This paper considers the degradation of alumina and zirconia toughened alumina vs. alumina for hip implants. The materials are as assumed to be load bearing surfaces subjected to shocks in wet conditions. The load is a peak of force; 9 kN was applied over 15 ms at 2 Hz for 800,000 cycles. The volumetric wear and roughness are lower for ZTA than for alumina. The long ZTA ageing did not seem to have a direct influence on the roughness. The ageing increased the wear volumes of ZTA and it was found to have a higher wear resistance compared to alumina. Comment: International Conference on BioTribology (ICoBT 2011), Londres, 18 au 21 septembre 2011, Londres : United Kingdom (2011)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1311.7055 Zobrazit plný text záznamu View this record from Arxiv