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Title of Journal: Tribol Lett

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Abbravation: Tribology Letters

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Publisher

Springer US

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DOI

10.1007/BFb0063182

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1573-2711

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PolymerBrush Lubrication in Oil Sliding Beyond t

Authors: Robert M Bielecki Maura Crobu Nicholas D Spencer
Publish Date: 2012/11/04
Volume: 49, Issue: 1, Pages: 263-272
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Abstract

We report a highly effective macroscopic nonaqueous lubrication strategy employing polymerbrushbased surface modification Polyalkyl methacrylates with hexyl dodecyl and octadecyl side chains have been prepared on both silicon and iron substrates by means of surfaceinitiated atomtransfer radical polymerisation Frictional properties of the three polymers have been evaluated in hexadecane ethanol and toluene For the case of the polydodecyl methacrylate the study additionally involved nine base lubricating fluids of different chemical natures with viscosities ranging from 4 to 2200 cSt at 20 °C By constructing a set of Stribeck curves at low values of speed × viscosity at constant load it was possible to identify an extended hydrodynamic lubrication regime and for P12MAbased coatings a lowfriction brushlubrication regime reinforced by timedependant effects which appeared to replace the mixed and boundary regimes observed for conventional lubricants Selfmated polydodecyl methacrylate brushes maintained low coefficientoffriction values eg 0012 in hexadecane over thousands of reciprocating cycles 100 m total distance under low speed × viscosity conditions 01 cm/s and 4 cSt


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Other Papers In This Journal:

  1. A Film Thickness Correction Formula for Double-Newtonian Shear-Thinning in Rolling EHL Circular Contacts
  2. An investigation into friction behaviour of dispersion-strengthened copper under severe railway braking conditions
  3. In Situ NbC Particulate-Reinforced Iron Matrix Composite: Microstructure and Abrasive Wear Characteristics
  4. The Role of Ferric Oxide Nanoparticles in Improving Lubricity and Tribo-Electrochemical Performance During Chemical–Mechanical Polishing
  5. Influence of Post-treatment on the Microstructural and Tribomechanical Properties of Suspension Thermally Sprayed WC–12 wt%Co Nanocomposite Coatings
  6. Lateral Vibration Analysis of Flexible Shafts Supported on Elliptical Journal Bearings
  7. Influence of Friction on Surface Asperity Flattening Process in Cold Uniaxial Planar Compression (CUPC)
  8. Effect of Surface Roughening of Substrate Steel on the Improvement of Delamination Strength and Tribological Behavior of Hydrogenated Amorphous Carbon Coating Under Lubricated Conditions
  9. Transmission Electron Microscopy Analysis of Mo–W–S–Se Film Sliding Contact Obtained by Using Focused Ion Beam Microscope and In Situ Microtribometer
  10. Effect of Chromium on Oxidation in Wear of Surface Nanocrystalline Martensite Steel
  11. Design of a New Tribometer for Tribological and Viscoelasticity Studies of PTFE Valve Seats
  12. Tribochemistry of Bulk Zinc Metaphosphate Glasses
  13. Simulation of Hydrocarbon Oil Contamination at the Head–Disk Interface Using Molecular Dynamics
  14. Impact Abrasive Wear Response of Carbon/Carbon Composites at Elevated Temperatures
  15. Analyzing Periodic Signals in Rotating Pin-on-Disc Tribotest Measurements Using Discrete Fourier Transform Algorithm
  16. Frictional Voltammetry with Copper
  17. Explanation for the mechanical strength of amyloid fibrils
  18. Experimental investigation of frictional and viscoelastic properties of intestine for microendoscope application
  19. The Role of Functional End Groups of Perfluoropolyether (Z-dol and Z-03) Lubricants in Augmenting the Tribology of SU-8 Composites
  20. Dissipation of Vibration in Rough Contact
  21. Movement of Entrapped Oil Under Pure Rolling Conditions
  22. Study on Surface Asperity Flattening in Cold Quasi-Static Uniaxial Planar Compression by Crystal Plasticity Finite Element Method
  23. High-Temperature Friction and Wear of Ag/h-BN-Containing Ni-based Composites Against Steel

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