Improvement of UHMWPE Properties for Bioimplants by Gamma Irradiation

机译：伽马射线辐照改善生物植入物的UHMWPE性能

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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 ~(60)Co γ-emitter at laboratory temperature. Radiation dose 50 kGy was applied. Some irradiated samples were thermally treated at 150℃ 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.

机译：研究了γ辐照和后续热处理对超高分子量聚乙烯（UHMWPE）的耐磨性和摩擦行为的影响。在实验室温度下使用〜（60）Coγ发射体对聚合物进行辐照。施加50kGy的辐射剂量。将一些辐照过的样品在150℃下热处理30分钟。然后慢慢冷却至室温。线性往复式摩擦计用于研究UHMWPE对Co-Cr-Mo合金的磨损行为。该测试已在非润滑条件下进行。与原始材料相比，改性UHMWPE的耐磨性得到了重要提高。除了磨损率，还确定了UHMWPE原始样品和改性样品的选定机械特性（摩擦系数，杨氏模量，屈服强度，断裂强度和硬度）。

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《Advanced materials and nanotechnology》|2011年|p.207-210|共4页
会议地点 Wellington(NZ);Wellington(NZ)
作者
Frantisek Cerny; Mohamed Ali Khalil Ibrahim; Jan Suchanek; Svatava Konvickova; Vladimir Jech; Zdenek Horak;
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作者单位

Faculty of Mechanical Engineering, CTU in Prague, Technicka 4, 16607 Prague, Czech Republic;

Faculty of Mechanical Engineering, CTU in Prague, Technicka 4, 16607 Prague, Czech Republic;

Faculty of Mechanical Engineering, CTU in Prague, Technicka 4, 16607 Prague, Czech Republic;

Faculty of Mechanical Engineering, CTU in Prague, Technicka 4, 16607 Prague, Czech Republic;

Faculty of Mechanical Engineering, CTU in Prague, Technicka 4, 16607 Prague, Czech Republic;

Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Machova 7, 12000 Prague, Czech Republic;

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原文格式 PDF
正文语种 eng
中图分类工程材料一般性问题;
关键词
gamma irradiation; UHMWPE; heat treatment; wear resistance;

机译：伽马射线超高分子量聚乙烯热处理;耐磨性;

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Improvement of UHMWPE Properties for Bioimplants by Gamma Irradiation

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