Ultralow Friction Between Steel Surfaces Achieved by Lubricating with Liquid Crystal After a Running-in Process with Acetylacetone

Ultralow Friction Between Steel Surfaces Achieved by Lubricating with Liquid Crystal After a... A suitable running-in process is advantageous for reducing friction. The aim of the present work was to study the influence of the running-in with acetylacetone on tribological performance of 4-Cyano-4’-pentylbiphenyl (5CB) liquid crystal. Friction tests were performed between steel surfaces in a ball-on-disk sliding system. After a running-in period of 240 s, the COF of 5CB was measured to be 0.013, which is about a quarter of the value (0.055) without running-in. The reduced contact pressure, caused in running-in process, does not directly lead to a drop in COF. The generation of tris(acetylacetonato) iron(III) induced by the tribochemical reactions between acetylacetone and steel surfaces, and the unique physical properties of liquid crystal are assumed to be reasons for the ultralow COF. Surface analysis was performed to correlate COF with the topography of wear surfaces. An evenly distributed specific grooved structure observed on wear area of the ball may have a beneficial effect on COF as well. We believe our findings can provide an effective and simple solution to reduce COF of liquid crystal between steel surfaces. A better understanding of the tribological behavior is needed for the development of this tribological system and for the possible future applications. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Tribology Letters Springer Journals

Ultralow Friction Between Steel Surfaces Achieved by Lubricating with Liquid Crystal After a Running-in Process with Acetylacetone

12 pages
Read Article

Loading next page...
 
/lp/springer_journal/ultralow-friction-between-steel-surfaces-achieved-by-lubricating-with-00uwO1Q3QX
Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Materials Science; Tribology, Corrosion and Coatings; Surfaces and Interfaces, Thin Films; Theoretical and Applied Mechanics; Physical Chemistry; Nanotechnology
ISSN
1023-8883
eISSN
1573-2711
DOI
10.1007/s11249-018-1020-3
Publisher site
See Article on Publisher Site

Abstract

A suitable running-in process is advantageous for reducing friction. The aim of the present work was to study the influence of the running-in with acetylacetone on tribological performance of 4-Cyano-4’-pentylbiphenyl (5CB) liquid crystal. Friction tests were performed between steel surfaces in a ball-on-disk sliding system. After a running-in period of 240 s, the COF of 5CB was measured to be 0.013, which is about a quarter of the value (0.055) without running-in. The reduced contact pressure, caused in running-in process, does not directly lead to a drop in COF. The generation of tris(acetylacetonato) iron(III) induced by the tribochemical reactions between acetylacetone and steel surfaces, and the unique physical properties of liquid crystal are assumed to be reasons for the ultralow COF. Surface analysis was performed to correlate COF with the topography of wear surfaces. An evenly distributed specific grooved structure observed on wear area of the ball may have a beneficial effect on COF as well. We believe our findings can provide an effective and simple solution to reduce COF of liquid crystal between steel surfaces. A better understanding of the tribological behavior is needed for the development of this tribological system and for the possible future applications.

Journal

Tribology Letters – Springer Journals

Published: Apr 30, 2018

References

  • Energy Consumption due to Friction in Motored Vehicles and Low-Friction Coatings to Reduce it
    Erdemir, A; Holmberg, K
  • Influence of tribology on global energy consumption, costs and emissions
    Holmberg, K; Erdemir, A
  • Liquid crystals in tribology
    Carrion, FJ; Martinez-Nicolas, G; Iglesias, P; Sanes, J; Bermudez, MD
  • Ionic liquids as advanced lubricant fluids
    Bermudez, MD; Jimenez, AE; Sanes, J; Carrion, FJ
  • Galvanically induced potentials to enable minimal tribochemical wear of stainless steel lubricated with sodium chloride and ionic liquid aqueous solution
    Amann, T; Gatti, F; Oberle, N; Kailer, A; Rühe, J
  • The physics of liquid crystals
    Prost, J
  • Liquid crystals: applications and uses
    Bahadur, B
  • Tribology and the liquid-crystalline state
    Biresaw, G
  • Lubrication by a smectic liquid crystal
    Fischer, TE; Bhattacharya, S; Salher, R; Lauer, JL; Ahn, YJ
  • Relationship between tribological performance of liquid crystals and their molecular structure
    Mori, S; Iwata, H
  • Antiseizure properties of aqueous solutions of compounds forming liquid crystalline structures
    Sulek, MW; Wasilewski, T
  • Minimization of friction at various speeds using autonomous viscosity control of nematic liquid crystal
    Tadokoro, C; Nihira, T; Nakano, K
  • Tribological properties of nematic and smectic liquid crystalline mixtures used as lubricants
    Ważyńska, B; Okowiak, JA
  • Tribology and the liquid-crystalline state
    Kupchinov, BI
  • The estimation of abilities of liquid-crystalline compounds dissolved in paraffin oil for accumulation on solid surface
    Ważyńska, B; Tykarska, M; Okowiak-Chinalska, J
  • Studies on the additive performance of liquid crystal blended polyacrylate in lubricating oil
    Ghosh, P; Upadhyay, M; Das, MK
  • Unusual lift by shearing mesogenic fluids.
    Eidenschink, R; Konrath, G; Kretzschmann, H; Rombach, M
  • Ultralow friction of mesogenic fluid mixtures in tribological reciprocating systems
    Amann, T; Kailer, A
  • Relationship between ultralow friction of mesogenic-like fluids and their lateral chain length
    Amann, T; Kailer, A
  • Analysis of the ultralow friction behavior of a mesogenic fluid in a reciprocating contact
    Amann, T; Kailer, A
  • Ultralow friction induced by tribochemical reactions: a novel mechanism of lubrication on steel surfaces
    Li, K; Amann, T; Walter, M; Moseler, M; Kailer, A; Rühe, J
  • Ultralow friction of steel surfaces using a 1,3-diketone lubricant in the thin film lubrication regime
    Li, K; Amann, T; List, M; Walter, M; Moseler, M; Kailer, A; Rühe, J
  • Development of sintered bearings with minimal friction losses and maximum life time using infiltrated liquid crystalline lubricants
    Amann, T; Kailer, A; Beyer-Faiß, S; Stehr, W; Metzger, B
  • Macroscopic superlow friction of steel and diamond-like carbon lubricated with a formanisotropic 1,3-diketone
    Amann, T; Kailer, A; Oberle, N; Li, K; Walter, M; List, M; Rühe, J
  • Anti-spreading behavior of 1,3-diketone lubricating oil on steel surfaces
    Liu, D; Li, K; Zhang, S; Amann, T; Zhang, C; Yan, X
  • On the nature of running-in
    Blau, PJ
  • Superlubricity of silicone oil achieved between two surfaces by running-in with acid solution
    Li, J; Zhang, C; Deng, M; Luo, J
  • Reaction of acetylacetone with metallic iron in the presence of oxygen
    Charles, RG; Barnartt, S
  • Studies of the direct dissolution of metal in a β-diketone reagent
    Sato, K; Kammori, O
  • Additives used in lubricating oils for foreign aviation gas turbine engines (review of patents)
    Kalatain, E; Vilenkin, A
  • Scaling law on molecular orientation and effective viscosity of liquid-crystalline boundary films
    Nakano, K
  • Anisotropic shear viscosity of photoaligned liquid crystal confined in submicrometer-to-nanometer-scale gap widths revealed with simultaneously measured molecular orientation
    Itoh, S; Imura, Y; Fukuzawa, K; Zhang, H
  • Effect of alkyl chain length on the orientational behavior of liquid crystals nano-film
    Gao, M; Ma, L; Luo, J
  • Friction anisotropy induced by oriented liquid crystal molecules
    Gao, Y; Ma, L; Luo, J
  • Phase transformations and dynamics of 4-cyano-4′-pentylbiphenyl (5CB) by nuclear magnetic resonance, analysis differential scanning calorimetry, and wideangle X-ray diffraction analysis
    Mansare, T; Decressain, R; Gors, C; Dolganov, VK
  • Terahertz time-domain spectroscopy studies of the optical constants of the nematic liquid crystal 5CB
    Tsai, TR; Chen, CY; Pan, CL; Pan, RP; Zhang, XC
  • Addressing practical challenges of low friction coefficient measurements
    Burris, DL; Sawyer, WG
  • Analysis of measurement inaccuracy in superlubricity tests
    Li, J; Zhang, C; Sun, L; Luo, J
  • X-ray photoelectron spectra of metal complexes of substituted 2,4-pentanediones
    Srivastava, S; Badrinarayanan, S; Mukhedkar, AJ
  • Few layer graphene to reduce wear and friction on sliding steel surfaces
    Berman, D; Erdemir, A; Sumant, AV
  • Pitted surfaces produced by lactic acid lubrication and their effect on ultra-low friction
    Gao, Y; Ma, L; Luo, J
  • Surface effects and anchoring in liquid crystals
    Jerome, B
  • Liquid crystal microfluidics: surface, elastic and viscous interactions at microscales
    Sengupta, A; Herminghaus, S; Bahr, C

You’re reading a free preview. Subscribe to read the entire article.

Try 2 weeks free now

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

or browse the journals available

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create folders to
organize your research

Export folders, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off

Sign up
for free
Start 14 day
Free Trial