离子液体润滑下的GLC薄膜摩擦学性能研究
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摘要
合成了一系列新型锂基离子液体,利用磁控溅射技术在单晶硅表面制备了类石墨碳薄膜摩擦副,利用UMT-2MT摩擦磨损试验机以离子液体作为润滑剂对类石墨碳薄膜的摩擦性能进行了研究.采用扫描电子显微镜(SEM)分析了薄膜表面磨损的微观形貌,通过X射线光电子能谱仪(XPS)分析了薄膜摩擦磨损机理.结果表明锂盐离子液体与咪唑基离子液体相比,锂基离子液体表现出了优秀的抗磨性能,咪唑基离子液体展现了更优良的减摩性能,其原因是由于摩擦副表面生成了包括摩擦化学反应膜和物理吸附膜的边界润滑保护膜,起到了抗磨减摩的作用.
A series of new lithium based ionic liquids are synthesized.The friction pairs of the graphitelike carbon(GLC)films are prepared by magnetron sputtering technology on the surface of monocrystalline silicon.The friction properties of GLC films are studied with ionic liquid as lubricant by the UMT-2 MT friction and wear tester.The microstructure of the surface wear of the film is analyzed by scanning electron microscope(SEM)and the friction and wear mechanism of the film is analyzed by the X ray photoelectron spectroscopy(XPS).The results show that lithium ionic liquids exhibit excellent anti-wear properties while imidazolyl ionic liquids exhibit better anti-friction properties.The reason is that the surface of the friction pair has formed a boundary lubrication protective film including the frictional chemical reaction film and physical adsorption film which plays a role in anti-wear and friction reduction of GLC films.
A series of new lithium based ionic liquids are synthesized.The friction pairs of the graphitelike carbon(GLC)films are prepared by magnetron sputtering technology on the surface of monocrystalline silicon.The friction properties of GLC films are studied with ionic liquid as lubricant by the UMT-2 MT friction and wear tester.The microstructure of the surface wear of the film is analyzed by scanning electron microscope(SEM)and the friction and wear mechanism of the film is analyzed by the X ray photoelectron spectroscopy(XPS).The results show that lithium ionic liquids exhibit excellent anti-wear properties while imidazolyl ionic liquids exhibit better anti-friction properties.The reason is that the surface of the friction pair has formed a boundary lubrication protective film including the frictional chemical reaction film and physical adsorption film which plays a role in anti-wear and friction reduction of GLC films.
引文
[1]邓友全.离子液体的性质、制备与应用[M].北京:中国石化出版社,2006.
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[15]刘维民,叶承峰,王海忠,等.烷基咪唑四氟硼酸盐离子液作为润滑剂的摩擦学性能[J].摩擦学学报,2001,21(6):482484.
[16]ZHANG S,LI J,DAI C,et al.Tribological behaviour study of two ionic liquids[J].Lubrication Engineering,2006,31(9):40-43.
[2]顾彦龙,石峰,邓友全.室温离子液体:一类新型的软介质和功能材料[J].科学通报,2004,49(6):515-521.
[3]LIU W M,ZHAO T Y,ZHANG Y M,et al.The physical properties of aqueous solutions of the ionic liquids[BMIM][BF4].Journal of Solution Chemistry,2006,35:1337-1346.
[4]马婕,蒋百灵,张永宏.Cr靶电流对Cr改性类石墨薄膜摩擦磨损性能的影响[J].摩擦学学报,2007,27(5):437-441.
[5]HUANG H,WANG X,HE J.Synthesis and properties of graphite like carbon by ion beam assisted deposition[J].Materials Letters Issue,2002,57(22/23):3431-3436.
[6]LING H,WU J,SUN J,et al.Electron cyclotron resonance plasma-assisted pulsed laser deposition of boron carbon nitride films[J].Diamond and Related Materials,2002,11:1623-1628.
[7]叶承峰.含氟杂环润滑剂的设计制备与性能[D].兰州:兰州化物所,2002.
[8]王永欣,王立平,薛群基.金属掺杂高硬度类石墨薄膜结构及其摩擦学性能研究[J].摩擦学学报,2011,31(1):72-77.
[9]FAN M J,LIANG Y M,ZHOU F,et al.Dramatically improved friction reduction and wear resistance by in situ formed ionic liquids[J].RSC Advances,2012,2:6824-6830.
[10]YANG J Q,LIU Y,YE Z Y,et al.The effect of plasma nitriding on the tribology of perfluoropolyether grease-lubricated 2Cr13steel couples in vacuum[J].Tribology Letters,2010,40(1):203-207.
[11]MINAMI.Ionic liquids in tribology[J].Molecules,2009,14(6):2286-2305.
[12]LI Y R,PEREIRA G.Studies on ZDDP anti-wear films formed under different conditions by XANES spectroscopy,atomic force microscopy and 31P NMR[J].Tribology Letters,2007,28(3):319-328.
[13]FENG X,XIA Y Q.Tribological properties of Tidoped DLC coatings under ionic liquids lubricated conditions[J].Applied Surface Science,2012,258(7):2433-2438.
[14]张晟卯,李健,代闯,等.两种离子液体的摩擦学行为研究[J].润滑与密封,2006,31(9):40-43.
[15]刘维民,叶承峰,王海忠,等.烷基咪唑四氟硼酸盐离子液作为润滑剂的摩擦学性能[J].摩擦学学报,2001,21(6):482484.
[16]ZHANG S,LI J,DAI C,et al.Tribological behaviour study of two ionic liquids[J].Lubrication Engineering,2006,31(9):40-43.