典型文献
Polyethylene glycol derived carbon quantum dots nanofluids:An excellent lubricant for diamond-like carbon film/bearing steel contact
文献摘要：
Polyethylene glycol derived carbon quantum dots nanofluids were synthesized via a slow thermal oxidation process.The size of carbon quantum dots was ca.2 nmn and had a decreasing trend with the increase of oxidation time.When used as lubricant in a diamond-like carbon film/bearing steel interface,the nanofluids achieved an ultra-low friction coefficient(μ ≈ 0.02),much lower than that of original polyethylene glycol(μ=0.12).The worn surface analyses revealed that the nanofluids could effectively inhibit the tribo-oxidation of steel counterpart that occurred under original polyethylene glycol lubrication,and hence reduced the abrasion component of friction.Especially,the poly-hydroxyl carbon dots and oxidized polyethylene glycol species in nanofluids induced a hydroxyl-rich sliding interface via their tribochemical reactions with friction surfaces,which promoted the adsorption of polyethylene glycol molecules on sliding surfaces.Along with the mild corrosion wear of steel counterface,this shifted the boundary lubrication to a mixed/film lubrication regime,thereby achieving an ultra-low friction coefficient.The above results suggest that the polyethylene glycol derived carbon quantum dots nanofluids should be a quite excellent candidate lubricant for solid-liquid synergy lubrication based on diamond-like carbon films.
文献关键词：
中图分类号：
作者姓名：
Fu WANG;Lunlin SHANG;Guangan ZHANG;Zhaofeng WANG
作者机构：
State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China
文献出处：
引用格式：
[1]Fu WANG;Lunlin SHANG;Guangan ZHANG;Zhaofeng WANG-.Polyethylene glycol derived carbon quantum dots nanofluids:An excellent lubricant for diamond-like carbon film/bearing steel contact)[J].摩擦（英文）,2022(09):1393-1404
A类：
tribochemical,counterface
B类：
Polyethylene,glycol,derived,carbon,quantum,dots,nanofluids,An,excellent,lubricant,diamond,like,bearing,steel,contact,were,synthesized,via,slow,thermal,oxidation,process,was,nmn,had,decreasing,trend,increase,When,used,interface,achieved,ultra,friction,coefficient,much,lower,than,that,original,polyethylene,worn,analyses,revealed,could,effectively,inhibit,counterpart,occurred,under,lubrication,hence,reduced,abrasion,component,Especially,hydroxyl,oxidized,species,induced,rich,sliding,their,reactions,surfaces,which,promoted,adsorption,molecules,Along,mild,corrosion,wear,this,shifted,boundary,mixed,regime,thereby,achieving,above,results,suggest,should,quite,candidate,solid,liquid,synergy,films
AB值：
0.471508
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