Current-carrying Tribological Properties of Ti-Ag/TiN-Ag and Ti-Cu/TiN-Cu Coatings under Grease Lubrication

doi:10.3901/JME.2021.03.137

Abstract

Abstract: The Ti-Ag/TiN-Ag and Ti-Cu/TiN-Cu coatings are prepared by multi arc ion plating. The conductive grease(MLG) is prepared with multilayer graphene(MLG) as conductive filler and polyethylene glycol(PAG) as base oil. The friction and wear properties of the coating under the condition of current carrying lubrication are studied by hft-r4000 high-speed reciprocating current carrying friction and wear tester. The surface of the coating and wear mark are observed and analyzed by scanning electron microscope(SEM), energy dispersive X-ray spectrometer(EDS) and Raman spectrometer(Raman). The results show that the Ti-Cu/TiN-Cu coating with Cu atom content of 3% has better anti-wear, anti-friction and electro-corrosion properties under grease lubrication, while the Ti-Ag/TiN-Ag coating with Ag atom content of 3% shows better current stability under grease lubrication, which is attributed to the composite effect between the coating and grease to improve the friction reduction, anti-wear and conductivity of the friction surface.

Key words: current carrying friction, conducting medium, conductive coating, conductive grease

CLC Number:

TG356

XIA Yanqiu, LIN Feihu, FENG Xin. Current-carrying Tribological Properties of Ti-Ag/TiN-Ag and Ti-Cu/TiN-Cu Coatings under Grease Lubrication[J]. Journal of Mechanical Engineering, 2021, 57(3): 137-146.

References

[1] LIU X,CAI Z,HE J,et al. Effect of elevated temperature on fretting wear under electric contact[J]. Wear,2017,376-377:643-655.
[2] SUNG I H,KIM J W,NOH H J,et al. Effect of displacement and humidity on contact resistance of copper electrical contacts[J]. Tribology International,2016,95:256-261.
[3] RUDOLPHI Å K,JACOBSON S. Gross plastic fretting mechanical deterioration of silver coated electrical contacts[J]. Wear,1996,201(1):244-254.
[4] SENOUCI A,ZAIDI H,FRENE J,et al. Damage of surfaces in sliding electrical contact copper/steel[J]. Applied Surface Science,1999,144-145:287-291.
[5] GRANDIN M,WIKLUND U. Influence of mechanical and electrical load on a copper/copper-graphite sliding electrical contact[J]. Tribology International,2018,121:1-9.
[6] CHEN J,XIA Y,HU Y,et al. Tribological performance and conductive capacity of Ag coating under boundary lubrication[J]. Tribology International,2017,110:161-172.
[7] WITTMER M,STUDER B,MELCHIOR H. Electrical characteristics of TiN contacts to N silicon[J]. Journal of Applied Physics,1981,52(9):5722-5726.
[8] 何家文,李文梅. 气相沉积TiN和Ti(C,N)镀层的热磨损性能[J]. 摩擦学学报,1994,14(3):205-212. HE Jiawen,LI Wenmei. Wear of vapor deposited TiN and Ti(C,N) at elevated temperature[J]. Tribology,1994,14(3):205-212.
[9] 刘德宝,崔春翔. 氮化物陶瓷颗粒增强铜基复合材料的干摩擦磨损性能研究[J]. 摩擦学学报,2006,26(1):54-59. LIU Debao,CUI Chunxiang. Study on dry friction and wear properties of copper-matrix composites reinforced with nitrides ceramics particles[J]. Tribology,2006,26(1):54-59.
[10] PEDROSA P,MACHADO D,LOPES C,et al. Nanocomposite Ag:TiN thin films for dry biopotential electrodes[J]. Applied Surface Science,2013,285:40-48.
[11] DE LOS ARCOS T,OELHAFEN P,AEBI U,et al. Preparation and characterization of TiN-Ag nanocomposite films[J]. Vacuum,2002,67(3):463-470.
[12] HAN J G,MYUNG H S,LEE H M,et al. Microstructure and mechanical properties of Ti-Ag-N and Ti-Cr-N superhardNanostructured coatings[J]. Surface and Coatings Technology,2003,174-175:738-743.
[13] LI Z G,MIYAKE S,KUMAGAI M,et al. HardNanocomposite Ti-Cu-N films prepared by d.c. reactive magnetron co-sputtering[J]. Surface and Coatings Technology,2004,183(1):62-68.
[14] ZHAO J,FENG H J,TANG H Q,et al. Bactericidal and corrosive properties of silver implanted TiN thin films coated on AISI317 stainless steel[J]. Surface and Coatings Technology,2007,201(9):5676-5679.
[15] 邱维维,金杰,吕丽丽,等. IBAD制备WS₂-Ag固体润滑膜长期存储后的摩擦磨损性能[J]. 机械工程学报, 2018,54(6):41-47. QIU WeiWei,JIN Jie,LÜ Lili,et al. Friction and wear properties of a long-term storage WS₂-Ag films prepared by IBAD technology[J]. Journal of Mechanical Engineering,2018,54(6):41-47.
[16] JU H,YU L,YU D,et al. Microstructure,mechanical and trobological properties of TiN-Ag films deposited by reactive magnetron sputtering[J]. Vacuum,2017,141:82-88.
[17] XI Y,YANYUN B,KEWEI G,et al. Residual stress and microstructure effects on mechanical,tribological and electrical properties of TiN coatings on 304 stainless steel[J]. Ceramics International,2018,44(13):15851- 15858.
[18] 葛翔宇,夏延秋,冯欣,等. 锂盐型电力复合脂的导电性和摩擦学性能[J]. 机械工程学报,2015,51(15):61-66. GE Xiangyu,XIA Yanqiu,FENG Xin,et al. Electrical Conductivities and tribological properties of lithium salts conductive grease[J]. Journal of Mechanical Engineering, 2015,51(15):61-66.
[19] FAN X,XIA Y,WANG L,et al. Multilayer graphene as a lubricating additive in bentone grease[J]. Tribology Letters,2014,55(3):455-464.
[20] BAI Y,YAN L,WANG J,et al. Tailoring film agglomeration for preparation of silver nanoparticles with controlled morphology[J]. Materials & Design,2016,103:315-320.
[21] BARNA P B,ADAMIK M. Fundamental structure forming phenomena of polycrystalline films and the structure zone models[J]. Thin Solid Films,1998,317(1):27-33.
[22] WANG J,GUO X,HE Y,et al. Tribological characteristics of graphene as grease additive under different contact forms[J]. Tribology International,2018,127:457-469.