滑动模式对含表面修饰MoS_2纳米片润滑油摩擦学性能的影响
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摘要
为探究不同的滑动模式对含表面修饰MoS_2纳米片润滑油的摩擦学性能的影响,将含不同质量分数KH-MoS_2的润滑油样分别在单向和双向滑动模式下进行摩擦学试验,对比分析了其摩擦学性能,并建立了单向和双向滑动模式下的润滑模型。首先,使用超声处理硅烷偶联剂(KH570)修饰的MoS_2纳米片(KH-MoS_2)分散到石蜡油中,制备成含不同质量分数KH-MoS_2的润滑油样;然后,分别在单向和双向滑动模式下,采用球盘摩擦磨损试验机测试含不同质量分数KH-MoS_2纳米片的润滑油样的摩擦学性能;最后,通过对比分析对摩钢球的磨斑和对偶盘磨痕表面,探究了滑动模式对含有KH-MoS_2纳米片的润滑油样的摩擦学性能的影响。根据摩擦试验结果,建立了单向和双向滑动模式的润滑机理模型,研究了单向和双向滑动模式下含有KH-MoS_2纳米片的润滑油样的减摩抗磨机理。结果表明,在单向和双向滑动模式下,摩擦系数均随润滑油样中KH-MoS_2质量分数的增加而减小。在石蜡油中添加质量分数1%的KH-MoS_2时,双向滑动模式下获得最优摩擦系数可低至0.075,比同等滑动模式下使用纯石蜡油油样润滑时的摩擦系数低约53.4%,比单向滑动模式下使用同一油样润滑时的摩擦系数低约25%。
To explore the different effects produced by different sliding modes on the tribological properties of MoS_2 nano-lubricant,tribological tests were carried out under unidrectional and reciprocating sliding modes with different lubricating oil samples containing surface-modified MoS_2 nanosheets.Lubricating oil samples were prepared by dispersing silane coupling agent(KH570)modified MoS_2 nanosheets into liquid paraffin oil through ultrasonic treatment,then anti-friction and anti-wear properties of lubricating oil samples with different concentrations of KH-MoS_2 nanosheets were tested by ball-on-disk friction and wear tester under unidirectional and reciprocating sliding modes respectively.The influence of sliding mode on the tribological properties of lubricating oil with MoS_2 nanosheets was investigated by comparing and analyzingthe wear scar of steel ball and the surface of dual discs.According to the friction test results,the lubrication models of unidirectional and reciprocating sliding modes were established,and the anti-friction and anti-wear mechanism of lubricating oil containing KH-MoS_2 nanosheets under unidirectional and reciprocating sliding modes were investigated.The results show that the friction coefficient(COF)of lubrication oils nanoparticles decreases with the increasing concentration of KH-MoS2 nanosheets in lubricating oil under unidirectional and reciprocating sliding modes.The lowest COF of 0.075 can be obtained when the added mass fraction of KHMoS2 nanosheets in paraffin oil reaches 1% under reciprocating sliding mode,which is much lower than that under unidirectional sliding mode.The COF gets 53.4% lower than that lubricated by pure paraffin oil under reciprocating sliding mode and 25% lower than that of unidirectional sliding mode lubricated by the same lubricating oil sample.
To explore the different effects produced by different sliding modes on the tribological properties of MoS_2 nano-lubricant,tribological tests were carried out under unidrectional and reciprocating sliding modes with different lubricating oil samples containing surface-modified MoS_2 nanosheets.Lubricating oil samples were prepared by dispersing silane coupling agent(KH570)modified MoS_2 nanosheets into liquid paraffin oil through ultrasonic treatment,then anti-friction and anti-wear properties of lubricating oil samples with different concentrations of KH-MoS_2 nanosheets were tested by ball-on-disk friction and wear tester under unidirectional and reciprocating sliding modes respectively.The influence of sliding mode on the tribological properties of lubricating oil with MoS_2 nanosheets was investigated by comparing and analyzingthe wear scar of steel ball and the surface of dual discs.According to the friction test results,the lubrication models of unidirectional and reciprocating sliding modes were established,and the anti-friction and anti-wear mechanism of lubricating oil containing KH-MoS_2 nanosheets under unidirectional and reciprocating sliding modes were investigated.The results show that the friction coefficient(COF)of lubrication oils nanoparticles decreases with the increasing concentration of KH-MoS2 nanosheets in lubricating oil under unidirectional and reciprocating sliding modes.The lowest COF of 0.075 can be obtained when the added mass fraction of KHMoS2 nanosheets in paraffin oil reaches 1% under reciprocating sliding mode,which is much lower than that under unidirectional sliding mode.The COF gets 53.4% lower than that lubricated by pure paraffin oil under reciprocating sliding mode and 25% lower than that of unidirectional sliding mode lubricated by the same lubricating oil sample.
引文
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[27]梅堂杰,郭俊德,董光能.片状纳米MoS2的制备及其在油润滑中的减摩抗磨性能研究[J].表面技术,2018,47(8):129-138.MEI Tangjie,GUO Junde,DONG Guangneng,et al.Preparation of flaky nano-MoS2and its anti-friction and anti-wear performance in oil[J].Surface Technology,2018,47(8):129-138.
[28]JOLY-POTTUZ L,DASSENOY F,BELIN M,et al.Ultralow-friction and wear properties of IF-WS2under boundary lubrication[J].Tribology Letters,2005,18(4):477-485.
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[30]YI M,ZHANG C.The synthesis of MoS2 particles with different morphologies for tribological applications[J].Tribology International,2017,116:285-294.
[31]TANNOUS J,DASSENOY F,LAHOUIJ I,et al.Understanding the tribochemical mechanisms of IF-MoS2,nanoparticles under boundary lubrication[J].Tribology Letters,2011,41(1):55-64.
[32]XU Y,HU E,HU K.Formation of an adsorption film of MoS2 nanoparticles and dioctyl sebacate on a steel surface for alleviating friction and wear[J].Tribology International,2015,92:172-183.
[33]唐国钢.新型MoS2基纳米复合材料的形貌调控及摩擦学性能[D].江苏镇江:江苏大学,2016:50-53
[34]孙天华,杨生荣,马立民,等.花状O-MoS2添加剂的制备及摩擦学性能研究[J].摩擦学学报,2017,37(5):631-638.SUN Tianhua,YANG Shengrong,MA Limin,et al.Preparation and tribological performance of O-MoS2nanoflowers as an effective lubricant additive[J].Tribology,2017,37(5):631-638.
[2]YOU G L,HO N J,KAO P W.In-situ formation of Al2O3 nanoparticles during friction stir processing of AlSiO2 composite[J].Materials Characterization,2013,80:1-8.
[3]ALDANA P U,DASSENOUY F,VACHER B.Antispalling effect of WS2nanoparticles on the lubrication of automotive gearboxes[J].Tribology Transactions,2016,59(1):178-188.
[4]NISTE V B,TANAKA H,RATOI M,et al.WS2nanoadditized lubricant for applications affected by hydrogen embrittlement[J].RSC Advances,2015,5(51):40678-40687.
[5]RABASO P,DASSENOY F,VILLE F,et al.An investigation on the reduced ability of IF-MoS2nanoparticles to reduce friction and wear in the presence of dispersants[J].Tribology Letters,2014,55(3):503-516.
[6]MUTYALA K C,SINGH H,FOUTS J A.Influence of MoS2on the rolling contact performance of bearing steels in boundary lubrication:a different approach[J].Tribology Letters,2016,61(2):1-11.
[7]WU Hongxing,QIN Liguo,DONG Guangneng,et al.An investigation on the lubrication mechanism of MoS2nano sheet in point contact:the manner of particle entering the contact area[J].Tribology International,2017,107:48-55.
[8]KOGOVEK J,REMKAR M,KALIN M.Lubrication of DLC-coated surfaces with MoS2nanotubes in all lubrication regimes:surface roughness and running-in effects[J].Wear,2013,303(1/2):361-370.
[9]KALIN M,KOGOVEK J,KOVAˇCJ.The formation of tribofilms of MoS2nanotubes on steel and DLC-coated surfaces[J].Tribology Letters,2014,55(3):381-391.
[10]XIE H,JIANG B,HE J.Lubrication performance of MoS2and SiO2 nanoparticles as lubricant additives in magnesium alloy-steel contacts[J].Tribology International,2016,93:63-70.
[11]XIE H M,JIANG B,WANG Q H.Effects of combined additions of SiO2and MoS2 nanoparticles as lubricant additive on the tribological properties of AZ31magnesium alloy[J].Science China:Technological Sciences,2016,59(5):689-698.
[12]SPEAR J C,EWERS B W,BATTEAS J D.2D-nanomaterials for controlling friction and wear at interfaces[J].Nano Today,2015,10(3):301-314.
[13]DOU X,KOLTONOW A R,HE X,et al.Selfdispersed crumpled graphene balls in oil for friction and wear reduction[J].Proceedings of the National Academy of Sciences of the United States of America,2016,113(6):1528-1533.
[14]ZHAO J,LI Y,MAO J,et al.Synthesis of thermally reduced graphite oxide in sulfuric acid and its application as an efficient lubrication additive[J].Tribology International,2017,116:303-309.
[15]CHEN B,GU K,FANG J,et al.Tribological characteristics of monodispersed cerium borate nanospheres in biodegradable rapeseed oil lubricant[J].Applied Surface Science,2015,353:326-332.
[16]ZHOU J,WU Z,ZHANG Z,et al.Tribological behavior and lubricating mechanism of Cu nanoparticles in oil[J].Tribology Letters,2000,8(4):213-218.
[17]WANG Xiaoli,XU Binshi,XU Yi,et al.Preparation of nano-copper as lubrication oil additive[J].Journal of Central South University(English Version),2005,12(S2):203-206.
[18]RICO E F,MINONDO I,CUERVO D G.Rolling contact fatigue life of AISI 52100steel balls with mineral and synthetic polyester lubricants with PTFE nanoparticle powder as an additive[J].Wear,2009,266(7/8):671-677.
[19]CHINAS-CASTILLO F,SPIKES H A.Film formation by colloidal overbased detergents in lubricated contacts[J].ASLE Transactions,2000,43(3):357-366.
[20]CHINAS-CASTILLO F,SPIKES H A.Mechanism of action of colloidal solid dispersions[J].Journal of Tribology,2003,125(3):552-557.
[21]SPIKES H.Friction modifier additives[J].Tribology Letters,2015,60(1):1-26.
[22]CHAUVEAU V,MAZUYER D,DASSENOY F,et al.In situ film-forming and friction-reduction mechanisms for carbon-nanotube dispersions in lubrication[J].Tribology Letters,2012,47(3):467-480.
[23]WU H,LI X,HE X,et al.An investigation on the lubrication mechanism of MoS2nanoparticles in unidirectional and reciprocating sliding point contact:the flow pattern effect around contact area[J].Tribology International,2018,122:38-45.
[24]沃恒洲,胡坤宏,胡献国.纳米二硫化钼作为机械油添加剂的摩擦学特性研究[J].摩擦学学报,2004,24(1):33-37.WO Hengzhou,HU Kunhong,HU Xianguo.Tribological properties of MoS2nanoparticles as additive in a machine oil[J].Tribology,2004,24(1):33-37.
[25]赵修臣,刘颖,王栋梁,等.纳米Fe3O4粒子粒径对其作润滑油添加剂摩擦学性能的影响[J].润滑与密封,2006(1):61-63.ZHAO Xiuchen,LIU Ying,WANG Dongliang,et al.Effect of the particle size on tribological properties of nanometer Fe3O4as lubricating oil additives[J].Lubrication Engineering,2006(1):61-63.
[26]WU Hongxing,QIN Liguo,ZENG Qunfeng,et al.Understanding the physical adsorption action mechanism of MoS2 nanoparticles in boundary lubrication with different polyisobutyleneamine succinimide(PIBS)concentrations[J].Tribology Letters,2015,60(2):1-12.
[27]梅堂杰,郭俊德,董光能.片状纳米MoS2的制备及其在油润滑中的减摩抗磨性能研究[J].表面技术,2018,47(8):129-138.MEI Tangjie,GUO Junde,DONG Guangneng,et al.Preparation of flaky nano-MoS2and its anti-friction and anti-wear performance in oil[J].Surface Technology,2018,47(8):129-138.
[28]JOLY-POTTUZ L,DASSENOY F,BELIN M,et al.Ultralow-friction and wear properties of IF-WS2under boundary lubrication[J].Tribology Letters,2005,18(4):477-485.
[29]TANNOUS J,DASSENOY F,LAHOUIJ I,et al.Understanding the tribochemical mechanisms of IF-MoS2 nanoparticles under boundary lubrication[J].Tribology Letters,2011,41(1):55-64.
[30]YI M,ZHANG C.The synthesis of MoS2 particles with different morphologies for tribological applications[J].Tribology International,2017,116:285-294.
[31]TANNOUS J,DASSENOY F,LAHOUIJ I,et al.Understanding the tribochemical mechanisms of IF-MoS2,nanoparticles under boundary lubrication[J].Tribology Letters,2011,41(1):55-64.
[32]XU Y,HU E,HU K.Formation of an adsorption film of MoS2 nanoparticles and dioctyl sebacate on a steel surface for alleviating friction and wear[J].Tribology International,2015,92:172-183.
[33]唐国钢.新型MoS2基纳米复合材料的形貌调控及摩擦学性能[D].江苏镇江:江苏大学,2016:50-53
[34]孙天华,杨生荣,马立民,等.花状O-MoS2添加剂的制备及摩擦学性能研究[J].摩擦学学报,2017,37(5):631-638.SUN Tianhua,YANG Shengrong,MA Limin,et al.Preparation and tribological performance of O-MoS2nanoflowers as an effective lubricant additive[J].Tribology,2017,37(5):631-638.