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《Tribology》 2014-05
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Friction and Wear Properties of Water-dispersing System of Multilayer Graphene

QIAO Yu-lin;ZHAO Hai-chao;ZANG Yan;ZHANG Qing;National Key Laboratory of Remanufacturing and Academy of Armored Force Engineering;National Engineering Research Center for Mechanical Product Remanufacturing,Academy of Armored Force Engineering;  
Different thickness nano-graphenes were prepared and characterized by scanning electron microscopy and transmission electron microscopy.Friction and wear properties of water-dispersing system of graphene were investigated using an multi-functional reciprocating friction and wear tester in ambient condition.The morphology,elemental composition,and chemical state of typical elements on worn steel surfaces were analyzed by scanning electron microscopy with energy dispersive spectrum,X-ray photoelectron spectroscopy and the lubrication mechanism of water-dispersing system of graphene was explored primarily.Results indicate that the thickness of graphenes varied from 10 to 180 nm.Graphene possessed good friction-reducing and anti-wear properties by changing wear mechanism of pure water from severe adhesive wear and abrasive wear to abrasive wear.The main reason was that adsorption anti-friction layers and tribochemical films were formed on the worn surface lubricated with the water-dispersing system of graphene.Anti-friction layer and tribochemical film inhibited the oxidation of Fe and reduced friction and wear.
【Fund】: 国家自然基金(5105397);; 北京自然科学基金(3122031)项目资助~~
【CateGory Index】: TQ127.11;TH117.1
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