Abstract
Metal-matrix self-lubricating composites can exhibit excellent tribological properties owing to the release of solid lubricant from the matrix and the formation of a lubricating film on the tribosurface. The coverage of the lubricating film on a worn surface significantly influences the sliding process. However, it is difficult to quantify the film coverage owing to the thin and discontinuous character of the lubricating film and the high roughness of the worn surface. A quantitative characterization of the lubricating film coverage based on X-ray photoelectron spectroscopy (XPS) analysis was developed in this study. The friction tests of Cu-MoS2 composites with a MoS2 content of 0–40 vol% were conducted, and the worn surfaces of the composites were observed and analyzed. Further, the influence of the MoS2 volume content on the coverage of the lubricating film on the worn surface was investigated. The relationships among the volume fraction of the lubricant, coverage of the lubricating film, and the friction coefficient were established. The friction model for the metal matrix self-lubricating composites was developed and verified to facilitate the composition design and friction coefficient prediction of self-lubricating composites.
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References
Su Y F, Zhang Y S, Song J J, Hu L T. Tribological behavior and lubrication mechanism of self-lubricating ceramic/metal composites: The effect of matrix type on the friction and wear properties. Wear372–373: 130–138 (2017)
Sharma S M, Anand A. Solid lubrication in iron based materials-a review. Tribol Ind38(3): 318–331 (2016)
De Mello J D B, Binder C, Hammes G, Binder R, Klein A N. Tribological behaviour of sintered iron based self-lubricating composites. Friction5(3): 285–307 (2017)
Scharf T W, Prasad S V. Solid lubricants: A review. J Mater Sci48(2): 511–531 (2013)
Chhowalla M, Amaratunga G A J. Thin films of fullerenelike MoS2 nanoparticles with ultra-low friction and wear. Nature407(6801): 164–167 (2000)
Wang W, Xie G X, Luo J B. Black phosphorus as a new lubricant. Friction6(1): 116–142 (2018)
Shiao S J, Wang T Z. Dry self-lubricating composites. Compos: Part B27(5): 459–465 (1996)
Xiao J K, Zhang L, Zhou K C, Wang X P. Microscratch behavior of copper-graphite composites. Tribol Int57: 38–45 (2013)
Mahathanabodee S, Palathai T, Raadnui S, Tongsri R, Sombatsompop N. Dry sliding wear behavior of SS316L composites containing h-BN and MoS2 solid lubricants. Wear316(1–2): 37–48 (2014)
Kováčik J, Emmer Š, Bielek J, Keleši L. Effect of composition on friction coefficient of Cu-graphite composites. Wear265(3–4): 417–421 (2008)
Akhlaghi F, Zare-Bidaki A. Influence of graphite content on the dry sliding and oil impregnated sliding wear behavior of Al 2024-graphite composites produced by in situ powder metallurgy method. Wear266(1–2): 37–45 (2009)
Wu Y X, Wang F X, Cheng Y Q, Chen N P. A study of the optimization mechanism of solid lubricant concentration in NiMoS2 self-lubricating composite. Wear205(1–2): 64–70 (1997)
Xiao J K, Zhang W, Liu L M, Zhang L, Zhang C. Tribological behavior of copper-molybdenum disulfide composites. Wear384–385: 61–71 (2017)
Rohatgi P K, Liu Y, Yin M, Barr T L. Tribological behavior and surface analysis of tribodeformed AI alloy-50 pet graphite particle composites. Metall Trans A22(6): 1435–1441 (1991)
Axén N, Hutchings I M, Jacobson S. A model for the friction of multiphase materials in abrasion. Tribol Int29(6): 467–475 (1996)
van Trinh P, Trung T B, Thang N B, Thang B H, Tinh T X, Quang L D, Phuong D D, Minh P N. Calculation of the friction coefficient of Cu matrix composite reinforced by carbon nanotubes. Comp Mater Sci49(4 Suppl 1): S239–S241 (2010)
Song J P, Valefi M, de Rooij M, Schipper D J. A mechanical model for surface layer formation on self-lubricating ceramic composites. Wear268(9–10): 1072–1079 (2010)
Valefi M, de Rooij M, Mokhtari M, Schipper D J. Modelling of a thin soft layer on a self-lubricating ceramic composite. Wear303(1–2): 178–184 (2013)
Xu Z S, Zhang Q X, Huang X J, Liu R, Zhai W Z, Yang K, Zhu Q S. An approximate model for the migration of solid lubricant on metal matrix self-lubricating composites. Tribol Int93: 104–114 (2016)
Bowden F P, Tabor D. The Friction and Lubrication of Solids. Oxford (UK): Clarendon Press, 1964.
Sawyer W G, Dickrell P L. A fractional coverage model for gas-surface interaction in reciprocating sliding contacts. Wear256(1–2): 73–80 (2004)
Pudjoprawoto R, Dougherty P, Higgs III C F. A volumetric fractional coverage model to predict frictional behavior for in situ transfer film lubrication. Wear304(1–2): 173–182 (2013)
Wornyoh E Y A, Higgs III C F. An asperity-based fractional coverage model for transfer films on a tribological surface. Wear270(3–4): 127–139 (2011)
Blanchet T A, Sawyer W G. Differential application of wear models to fractional thin films. Wear251(1–12): 1003–1008 (2001)
Ye J, Khare H S, Burris D L. Quantitative characterization of solid lubricant transfer film quality. Wear316(1–2): 133–143 (2014)
Haidar D R, Ye J, Moore A C, Burris D L. Assessing quantitative metrics of transfer film quality as indicators of polymer wear performance. Wear380–381: 78–85 (2017)
Cao H Q, Qian Z Y, Zhang L, Xiao J K, Zhou K C. Tribological behavior of Cu matrix composites containing graphite and tungsten disulfide. Tribol Trans57(6): 1037–1043 (2014)
Zhang L, Xiao J K, Zhou K C. Sliding wear behavior of silver-molybdenum disulfide composite. TribolTrans 55(4): 473–480 (2012)
Rohatgi P K, Liu Y, Yin M, Barr T L. A surface-analytical study of tribodeformed aluminum alloy 319-10 vol.% graphite particle composite. Mater Sci Eng A123(2): 213–218 (1990)
Mandrino D, Podgornik B. XPS investigations of tribofilms formed on CrN coatings. Appl Surf Sci396: 554–559 (2017)
Blau P J, Yust C S. Microfriction studies of model selflubricating surfaces. Surf Coat Technol62(1–3): 380–387 (1993)
Ma W L, Lu J J. Effect of surface texture on transfer layer formation and tribological behaviour of copper-graphite composite. Wear270(3-4): 218–229 (2011)
Wilson J E, Stott F H, Wood G C. The development of wearprotective oxides and their influence on sliding friction. Proc Roy Soc A: Mathem, Phys Eng Sci369(1739): 557–574 (1980)
Ghods P, Isgor O B, Brown J R, Bensebaa F, Kingston D. XPS depth profiling study on the passive oxide film of carbon steel in saturated calcium hydroxide solution and the effect of chloride on the film properties. Appl Surf Sci257(10): 4669–4677 (2011)
Chasoglou D, Hryha E, Norell M, Nyborg L. Characterization of surface oxides on water-atomized steel powder by XPS/AES depth profiling and nano-scale lateral surface analysis. Appl Surf Sci268: 496–506 (2013)
Busby Y, List-Kratochvil E J W, Pireaux J J. Chemical analysis of the interface in bulk-heterojunction solar cells by X-ray photoelectron spectroscopy depth profiling. ACS Appl Mater Interfaces9(4): 3842–3848 (2017)
Baker M A, Gilmore R, Lenardi C, Gissler W. XPS investigation of preferential sputtering of S from MoS2 and determination of MoSx stoichiometry from Mo and S peak positions. Appl Surf Sci150(1–4): 255–262 (1999)
Steinberger R, Walter J, Greunz T, Duchoslav J, Arndt M, Molodtsov S, Meyer D C, Stifter D. XPS study of the effects of long-term Ar+ ion and Ar cluster sputtering on the chemical degradation of hydrozincite and iron oxide. Corros Sci99: 66–75 (2015)
Acknowledgments
The authors would like to thank the National Natural Science Foundation of China (Grant No. 51804272), Natural Science Foundation of Jiangsu Province (Grant No. BK20160472), Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 17KJB460017), Project funded by China Postdoctoral Science Foundation (Grant No. 2018M640526), Jiangsu Planned Projects for Postdoctoral Research Funds (Grant No. 1601095C and 2018K073C), Postgraduate Research & Practice Innovation Program of Jiangsu Province (Grant No. SJCX17_0623), Marine Science and Technology Project of Jiangsu Province (Grant No. HY2017-10), Cooperation Funding of Yangzhou City-Yangzhou University (Grant No. YZU201722), and Jiangdu Advanced Equipment Engineering Institute of Yangzhou University (Grant No. 2017-01) for the financial support provided.
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Jinkun XIAO. Assistant professor, obtained his bachelor degree and Ph.D degree in 2010 and 2015 from Central South University, majoring in material science and engineering. He worked as an assistant professor since 2015 at Yangzhou University. His interested research areas include self-lubricating composites, metal matrix friction materials, wear-resistant coatings, powder metallurgy and thermal spray technology. He has published more than 20 papers on international journals. He presided and participated in many research projects like “National Natural Science Foundation of China”, “Natural Science Foundation of Jiangsu Province”, and some cooperation projects.
Yuqing WU. She received her bachelor degree in material processing and control engineering in 2017 from Yangzhou University. After then, she was a master student in material processing engineering at the same university. Her interested research areas include wear-resistant coatings, high-entropy alloy and thermal spray technology.
Wei ZHANG. He received his bachelor degree in metallic materials engineering in 2015 from Nanchang Hangkong University. He is currently pursuing his master degree at Yangzhou University. His interested research areas include metal matrix self-lubricating composites and thermal spray technology.
Juan CHEN. Assistant professor, obtained her bachelor degree in 2010 from Xi’an Polytechnic University and Ph.D degree in 2016 from Central South University, majoring in material science and engineering. She worked as an assistant professor, since 2017 at Yangzhou University. Her interested research areas include wear-resistant alloys, superalloys, thermodynamic, kinetic, microstructure, scanning electron microscope and transmission electron microscope. She presided and participated in many research projects like “National Natural Science Foundation of China” and “China Postdoctoral Science Foundation”. She has published more than 10 papers on international journals.
Chao ZHANG. Professor, obtained his bachelor degree from Chongqing University in 2003 and his Ph.D degree from Technology University of Belfort-Montbéliard and Xi’an-Jiaotong University in June 2008. From September 2007 to January 2009, he worked as a teaching-research assistant in Technology University of Belfort-Montbéliard. Since February 2009, he is a postdoctoral researcher, and then a senior researcher in materials science Department of Engineering School of University of Mons. In 2014, he joined Yangzhou University as professor where he is leading a research group on thermal spray coatings and gas sensors. His research interests include thermal sprayed techniques and coatings, especially gas sensing and wear-resistant coatings. He has published more than 70 papers on international journals.
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Xiao, J., Wu, Y., Zhang, W. et al. Friction of metal-matrix self-lubricating composites: Relationships among lubricant content, lubricating film coverage, and friction coefficient. Friction 8, 517–530 (2020). https://doi.org/10.1007/s40544-019-0270-x
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DOI: https://doi.org/10.1007/s40544-019-0270-x