Improvement of UHMWPE Properties for Bioimplants by Gamma Irradiation

被引：0
作者：
Cerny, Frantisek [1 ]
Ibrahim, Mohamed Ali Khalil [1 ]
Suchanek, Jan [1 ]
Konvickova, Svatava [1 ]
Jech, Vladimir [1 ]
Horak, Zdenek [2 ]
机构：
[1] Czech Tech Univ, Fac Mech Engn, Tech 4, Prague 16607, Czech Republic
[2] Acad Sci Czech Republic, Inst Macromol Chem, Prague 12000, Czech Republic
来源：
ADVANCED MATERIALS AND NANOTECHNOLOGY | 2012年 / 700卷
关键词：
Gamma Irradiation; UHMWPE; Heat Treatment; Wear resistance;
D O I：
10.4028/www.scientific.net/MSF.700.207
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of gamma irradiation and subsequent thermal treatment on the wear resistance and friction behavior of ultrahigh molecular weight polyethylene (UHMWPE) has been studied. Irradiation of the polymer was performed using a Co-60 gamma-emitter at laboratory temperature. Radiation dose 50 kGy was applied. Some irradiated samples were thermally treated at 150 degrees C for period of 30 min. and then slowly cooled to room temperature. A linear reciprocating tribometer was used to investigate the wear behavior of UHMWPE against Co-Cr-Mo alloy. The tests have been performed in unlubrication conditions. An important increase in wear resistance of the modified UHMWPE in comparison with the original material was proved. Besides wear rate the selected mechanical characteristics (friction coefficient, Young's modulus, yield strength, fracture strength, and hardness) of original and modified samples of UHMWPE have been determined.
引用
收藏
页码：207 / +
页数：2
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