少层石墨烯负载纳米SiO_2复合材料对水润滑性能的影响
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摘要
采用液相超声直接剥离法制备了少层石墨烯负载纳米SiO_2复合材料,采用TEM对其形貌进行了表征,利用多功能往复摩擦磨损试验仪考察了少层石墨烯负载纳米SiO_2复合材料对水润滑性能的影响。通过SEM、XPS分别分析了磨损表面的形貌、元素组成及典型元素的化学状态,初步探讨了石墨烯负载纳米SiO_2复合材料在水中的润滑机理。结果表明:纳米SiO_2均匀分布于少层石墨烯片层表面和层间;其作为水润滑添加剂具有良好的减摩抗磨性能,这主要是由于石墨烯负载纳米SiO_2复合材料在磨损表面形成的摩擦化学反应膜与纳米SiO_2的自修复效应发生协同作用,抑制了Fe的氧化,并填补和修复了磨损表面,使磨痕表面的摩擦磨损减轻。
Graphene-based with SiO_2 nanocomposite materials were prepared by the melthod of liquid-phase ultrasonic exfoliation.Morphologies of nanocomposite materials were characterized by means of TEM.their tribological properties as a pure water additive were investigated using multi-functional reciprocating friction and wear tester.The morphology,elemental composition and chemical states of typical elements were analyzed by SEM and XPS.The lubrication mechanism of graphene-loaded with SiO_2 nanocomposites in water was preliminarily discussed.The results showed that the nano SiO_2 evenly distributed in the few layer graphene layer and surface layer;the nanocomposite materials as a pure water additive displayed good friction-reducing and antiwear performance.The prosperity was attributed to the synergistic effect of the self-repairing effect of nano SiO_2 and friction chemical reaction film formed on the worn surface by graphene-loaded with SiO_2 nanocomposite which inhibited oxidation of Fe and repaired the wear surface,that reduced friction and wear on the frictional surface.
Graphene-based with SiO_2 nanocomposite materials were prepared by the melthod of liquid-phase ultrasonic exfoliation.Morphologies of nanocomposite materials were characterized by means of TEM.their tribological properties as a pure water additive were investigated using multi-functional reciprocating friction and wear tester.The morphology,elemental composition and chemical states of typical elements were analyzed by SEM and XPS.The lubrication mechanism of graphene-loaded with SiO_2 nanocomposites in water was preliminarily discussed.The results showed that the nano SiO_2 evenly distributed in the few layer graphene layer and surface layer;the nanocomposite materials as a pure water additive displayed good friction-reducing and antiwear performance.The prosperity was attributed to the synergistic effect of the self-repairing effect of nano SiO_2 and friction chemical reaction film formed on the worn surface by graphene-loaded with SiO_2 nanocomposite which inhibited oxidation of Fe and repaired the wear surface,that reduced friction and wear on the frictional surface.
引文
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3 Ma H C.The preparation of phosphotungstic(phosphomolybdic)acid ammonium ultrafine particles and their tribological performance in water[D].Kaifeng:Henan University,2013.马会超.磷钨(钼)酸铵超细颗粒的制备及其水基摩擦学性能研究[D].开封:河南大学,2013.
4 Zhang B,Xu B S,Xu Y,et al.Research status of micro-and nanomaterials in lubricating additive[J].Tribology,2011,31(2):194.张博,徐滨士,许一,等.润滑剂中微纳米润滑材料的研究现状[J].摩擦学学报,2011,31(2):194.
5 Zhang J.Preparation of water-soluble lanthanum fluoride and lanthanum fluoride composite nanoparticles and investigation of their tribological behavior[D].Kaifeng:Henan University,2013.张杰.水溶性三氟化镧及其复合纳米微粒的制备和摩擦学行为研究[D].开封:河南大学,2013.
6 Lin L Y,Kim D E,Kim W K.Friction and wear characteristics of multi/layer grapheme films investigated by atomic force microscopy[J].Surface&Coatings Technology,2011,205(20):4864.
7 Lee J H,Kim S H,Cho D H.Tribological properties of chemical vapordeposited grapheme coating layer[J].Metals Mater,2012,50(3):206.
8 Pu J B,Wang L P,Xue Q J.Progress of tribology of graphene and graphene-based composite lubricating materials[J].Tribology,2014,34(1):93.蒲吉斌,王立平,薛群基.石墨烯摩擦学及石墨烯基复合润滑材料的研究进展[J].摩擦学学报,2014,34(1):93.
9 Song H J,Li N.Frictional behavior of oxide graphene nanosheets as water/base lubricant additive[J].Applied Physics A,2011,105:827.
10 Li N.Preparation and tribological properties of graphene oxide nanocomposite[D].Zhenjiang:Jiangsu University,2013.李娜.氧化石墨烯纳米复合材料的制备及其摩擦学性能研究[D].镇江:江苏大学,2013.
11 Liu Y H,Wang X K,Pan G S,et al.A comparative study between graphene oxide and diamond nanoparticles as water/based lubricating additives[J].Science China Technological Sciences,2013,56(1):152.
12 Cui Q S.Tribological properties of graphene and graphene oxide water dispersion system[D].Beijing:Academy of Armored Force Engineering,2013.崔庆生.石墨烯/氧化石墨烯水分散体系摩擦学性能研究[D].北京:装甲兵工程学院,2013.
13 Wang J H,Song M,Li J L,et al.The preparation and tribological properties of water-soluble nano-silica particles[J].Tribology,2011,31(2):118.王建华,宋敏,李金龙,等.水溶性纳米二氧化硅添加剂的制备及摩擦学性能研究[J].摩擦学学报,2011,31(2):118.
14 Yu G X,Zhang Q,Sun M B,et al.Preparation and tribological properties of water-soluble nanoscale SiO2[J].Journal of East China University of Science and Technology,2011,37(3):299.余国贤,张倩,孙末宾,等.水溶性纳米SiO2的制备及其摩擦学性能[J].华东理工大学学报(自然科学版),2011,37(3):299.
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16 Li X S.Investigation on the preparation of graphene and composites and their applications[D].Beijing:Beijing University of Chemical Technology,2013.李雪珊.石墨烯及其复合材料的制备和应用研究[D].北京:北京化工大学,2013.
17 Qiao Y L,Zhao H C,Zang Y,et al.The tribological properties of graphene-based LaF3nanocomposite matirials[J].Rare Metal Materials and Engineering,2017,46(5):1293.乔玉林,赵海朝,臧艳,等.石墨烯负载纳米LaF3复合材料的摩擦学性能[J].稀有金属材料与工程,2017,46(5):1293.