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Original PaperTribological Behavior of UHMWPE Reinforced with Graphene Oxide Nanosheets


In this article, a series of graphene oxide (GO)/ultrahigh molecular weight polyethylene (UHMWPE) composites are successfullyfabricated through an optimized toluene-assisted mixing followed by hot-pressing. The mechanical and tribological propertiesof pure UHMWPE and the GO/UHMWPE composites are investigated using a micro-hardness tester and a high speed reciprocatingfriction testing machine. Also, the wear surfaces of GO/UHMWPE composites are observed by a scanning electron microscope (SEM),to analyze the tribological behavior of the GO/UHMWPE composites. The results show that, when the content of GO nanosheetsis up to 1.0 wt%, both the hardness and wear resistance of the composites are improved significantly, while the friction coefficientincreases lightly. After adding GO, the tribological behavior of the GO/UHMWPE composites transforms from fatigue wear toabrasive wear associated with the generation of a transfer layer on the contact surface, which efficiently reduced the wearrate of the GO/UHMWPE composites.ʯīϩµÄÓ¦ÓÃÖ®ÉñÆæÊµÔÚÈÃÈË×½Ãþ²»Í¸£¡£¡£¡

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  • 2012-03-06 10:56:44, 807.26 K

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