Branding/Logomark minus Citation Combined Shape Icon/Bookmark-empty Icon/Copy Icon/Collection Icon/Close Copy 7 no author result Created with Sketch. Icon/Back Created with Sketch. Match!

The effect of oxygen on the tribology of (PEI/GO)15 multilayer solid lubricant coatings on steel substrates

Published on Jun 1, 2019in Wear 2.95
· DOI :10.1016/j.wear.2019.05.035
Prabakaran Saravanan (International Institute of Minnesota), Roman Selyanchyn10
Estimated H-index: 10
(International Institute of Minnesota)
+ 3 AuthorsJoichi Sugimura11
Estimated H-index: 11
(Kyushu University)
Cite
Abstract
Abstract Multilayers of polyethyleneimine and graphene oxide, (PEI/GO) 15 , were coated onto steel substrates via electrostatic layer-by-layer (LbL) deposition, and their tribological properties were investigated as solid lubricants. The coefficient of friction (COF) and specific wear rate (SWR) were measured against a poly(methyl methacrylate) (PMMA) counterface ball, in various gas environments with different oxygen concentrations. The COF and SWR both significantly decreased with decreasing oxygen content. Detailed surface characterization of the contact area of the counterface ball revealed that continuous transfer films were formed in oxygen-free environments, but not in oxygen-rich environments. This is attributed to an increased proportion of sp 3 bonding in the wear debris in the presence of oxygen (as confirmed by Raman spectroscopy), as well as possible suppression of wear debris adhesion on the counterface ball due to oxygen adsorption on the surface.
  • References (30)
  • Citations (0)
Cite
References30
Newest
Published on Sep 1, 2018in Polymers
Dapeng Gu1
Estimated H-index: 1
,
Longxiao Zhang1
Estimated H-index: 1
+ 2 AuthorsShouyao Liu1
Estimated H-index: 1
Published on Oct 1, 2017in Carbon 7.47
Prabakaran Saravanan4
Estimated H-index: 4
(International Institute of Minnesota),
Roman Selyanchyn10
Estimated H-index: 10
(International Institute of Minnesota)
+ 3 AuthorsJoichi Sugimura11
Estimated H-index: 11
(Kyushu University)
Abstract The efficiency and lifetime of mechanical devices is significantly decreased by friction and wear, significantly contributing to global energy consumption. We previously showed that multilayer polyethyleneimine/graphene oxide thin films, (PEI/GO) 15 , on steel display superlubricity against a steel counterface ball. Here, the coefficient of friction (COF) and wear of (PEI/GO) 15 with six different counterface polymer balls is investigated in air and in nitrogen, with particular focus on...
Published on Jun 1, 2017in Surface & Coatings Technology 3.19
Elisabetta Serpini2
Estimated H-index: 2
,
Alberto Rota12
Estimated H-index: 12
+ 3 AuthorsS. Valeri29
Estimated H-index: 29
Abstract MoS 2 is usually applied as thick films (1 μm and above) on sliding counterparts to decrease friction and wear. Thick films of MoS 2 generally grow columnar-like and the bending or fracture of these columns during sliding are supposed to be the origin of the good tribological performances. In the present work, we studied the tribological behavior of 200 nm MoS 2 films prepared by RF magnetron sputtering, with emphasis on the friction mechanisms. We performed ball-on-disc tests at differ...
Published on Oct 12, 2016in ACS Applied Materials & Interfaces 8.46
Prabakaran Saravanan1
Estimated H-index: 1
(Kyushu University),
Roman Selyanchyn10
Estimated H-index: 10
(Kyushu University)
+ 5 AuthorsJoichi Sugimura11
Estimated H-index: 11
Friction and wear decrease the efficiency and lifetimes of mechanical devices. Solving this problem will potentially lead to a significant reduction in global energy consumption. We show that multilayer polyethylenimine/graphene oxide thin films, prepared via a highly scalable layer-by-layer (LbL) deposition technique, can be used as solid lubricants. The tribological properties are investigated in air, under vacuum, in hydrogen, and in nitrogen gas environments. In all cases the coefficient of ...
Published on Mar 1, 2016in Tribology International 3.52
Prabakaran Saravanan4
Estimated H-index: 4
(International Institute of Minnesota),
Sujeet K. Sinha26
Estimated H-index: 26
(IITD: Indian Institute of Technology Delhi)
+ 1 AuthorsHai Minh Duong2
Estimated H-index: 2
(NUS: National University of Singapore)
Abstract Poor tribological properties of SU-8, a promising MEMS structural material, have been recently addressed by developing a perflouropolyether (Z-dol) lubricant droplet-filled SU-8 composite. The composite shows wear durability four orders of magnitude greater than that of SU-8. The chemical reaction between the SU-8 and PFPE molecules and the physical self-lubrication mechanism were found responsible for this dramatic improvement. In this work, the self-lubrication mechanism at the ball–c...
Published on Feb 26, 2016in Lubricants
Jiaxin Ye7
Estimated H-index: 7
(Hefei University of Technology),
David L. Burris26
Estimated H-index: 26
(UD: University of Delaware),
Ting Xie1
Estimated H-index: 1
(Hefei University of Technology)
In dry sliding conditions, polytetrafluoroethylene (PTFE) composites can form thin, uniform, and protective transfer films on hard, metallic counterfaces that may play a significant role in friction and wear control. Qualitative characterizations of transfer film morphology, composition, and adhesion to the counterface suggest they are all good predictors of friction and, particularly, wear performance. However, a lack of quantitative transfer film characterization methods and uncertainty regard...
Published on Jul 31, 2015in Sensors 3.03
Roman Selyanchyn10
Estimated H-index: 10
(University of Kitakyushu),
Shunichi Wakamatsu4
Estimated H-index: 4
+ 1 AuthorsSeung-Woo Lee20
Estimated H-index: 20
(University of Kitakyushu)
Quartz crystal microbalance (QCM) sensor array was developed for multi-purpose human respiration assessment. The sensor system was designed to provide feedback for human respiration. Thorough optimization of measurement conditions: air flow, temperature in the QCM chamber, frequency measurement rate, and electrode position regarding to the gas flow—was performed. As shown, acquisition of respiratory parameters (rate and respiratory pattern) could be achieved even with a single electrode used in ...
Published on Jun 5, 2015in Science 41.04
Diana Berman13
Estimated H-index: 13
(Argonne National Laboratory),
Sanket A. Deshmukh12
Estimated H-index: 12
(Argonne National Laboratory)
+ 2 AuthorsAnirudha V. Sumant29
Estimated H-index: 29
(Argonne National Laboratory)
Friction and wear remain as the primary modes of mechanical energy dissipation in moving mechanical assemblies; thus, it is desirable to minimize friction in a number of applications. We demonstrate that superlubricity can be realized at engineering scale when graphene is used in combination with nanodiamond particles and diamondlike carbon (DLC). Macroscopic superlubricity originates because graphene patches at a sliding interface wrap around nanodiamonds to form nanoscrolls with reduced contac...
Published on Feb 18, 2015in ACS Applied Materials & Interfaces 8.46
Juree Hong12
Estimated H-index: 12
(Yonsei University),
Sanggeun Lee9
Estimated H-index: 9
(Yonsei University)
+ 3 AuthorsTaeyoon Lee20
Estimated H-index: 20
A polymer membrane-coated palladium (Pd) nanoparticle (NP)/single-layer graphene (SLG) hybrid sensor was fabricated for highly sensitive hydrogen gas (H2) sensing with gas selectivity. Pd NPs were deposited on SLG via the galvanic displacement reaction between graphene-buffered copper (Cu) and Pd ion. During the galvanic displacement reaction, graphene was used as a buffer layer, which transports electrons from Cu for Pd to nucleate on the SLG surface. The deposited Pd NPs on the SLG surface wer...
Published on Nov 1, 2014in Advanced Functional Materials 15.62
Diana Berman13
Estimated H-index: 13
(Argonne National Laboratory),
Sanket A. Deshmukh12
Estimated H-index: 12
(Argonne National Laboratory)
+ 2 AuthorsAnirudha V. Sumant29
Estimated H-index: 29
(Argonne National Laboratory)
During the last few years, graphene's unusual friction and wear properties have been demonstrated at nano to micro scales but its industrial tribological potential has not been fully realized. The macroscopic wear resistance of one atom thick graphene coating is reported by subjecting it to pin-on-disc type wear testing against most commonly used steel against steel tribo-pair. It is shown that when tested in hydrogen, a single layer of graphene on steel can last for 6400 sliding cycles, while f...
Cited By0
Newest