Startseite Analysis of the ductile/brittle transition during a scratch test performed into polymeric film deposited on a PMMA substrate
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Analysis of the ductile/brittle transition during a scratch test performed into polymeric film deposited on a PMMA substrate

  • G. Heck , A. Riche , J. Bardon und H. Pelletier EMAIL logo
Veröffentlicht/Copyright: 4. Februar 2022
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 96 Heft 11

Abstract

Indentations and scratch tests using a Nano Indenter ®XP have been carried out to characterize the mar and wear resistance properties of polymeric bilayer systems. These systems were composed of a transparent coating on a thermoplastic polymer (PMMA) substrate. The different thin films were deposited using several coating technologies. Nanoindentation tests with a Berkovich indenter were performed at different peak loads from 0.625 to 10 mN, to determine the mechanical properties both of thin films and of the PMMA substrate, such as the elastic modulus and the hardness. A new analysis of the loading curve was applied to extract the viscoplasticity index. Then, scratch tests using a conical indenter truncated with a spherical tip (radius R = 5 μm) were realized with increasing progressively applied load (from 0 to 40 mN) to create irreversible damages (crack or delamination). The distinction between ductile and brittle behaviour in a scratch process leads to the definition of some specific parameters. For all tested specimens, we estimated the average contact pressure, the strain rate and the average strain beneath the indenter at which the fracture occurs. We propose a complete method to estimate with accuracy these differents parameters, from data supplied experimentally by the depth sensing instrument. This method takes into account the piling-up phenomenon and the viscoelastic recovery of the polymeric surface at the rear of the contact. No direct relationship was found between the viscoplasticity index and the ductile/brittle transition determined by the scratch test. Different criterions related to mar and scratch resistance were tested and compared to results obtained with macroscopic tests.

Keywords: Nanoindentation; Nanoscratch; Viscoplasticity index; Ductile-brittle transition; Polymeric surface
Dr. H. Pelletier INSA Strasbourg LISS 24, boulevard de la Victoire, F-67000 Strasbourg, France Tel.: +33 03 88 14 47 00 Fax: +33 03 88 24 14 90

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Received: 2004-09-09
Accepted: 2005-04-28
Published Online: 2022-02-04

© 2005 Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Frontmatter
  2. Editorial
  3. nanomech 5
  4. Articles Basic
  5. Quantitative evaluation of nanoindents: Do we need more reliable mechanical parameters for the characterization of materials?
  6. Nanoindentation investigation of solid-solution strengthening in III-V semiconductor alloys
  7. Comparison between conventional Vickers hardness and indentation hardness obtained with different instruments
  8. On the pressure dependence of the indentation modulus
  9. A review on the reverse analysis for the extraction of mechanical properties using instrumented Vickers indentation
  10. Articles Applied
  11. Quasi-static and dynamic depth-sensing indentation measurements to characterize wear and mar resistance of coating–polymer systems
  12. Obtaining mechanical parameters for metallisation stress sensor design using nanoindentation
  13. Direct measurement of nanoindentation area function by metrological AFM
  14. A usable concept for the indentation of thin porous films
  15. Analysis of the ductile/brittle transition during a scratch test performed into polymeric film deposited on a PMMA substrate
  16. Nanomechanical and nanotribological properties of polymeric ultrathin films for nanoimprint lithography
  17. Adhesive and nanomechanical properties of polymeric films deposited on silicon
  18. Modelling of the nanoindentation process of ultrathin films
  19. Regular articles
  20. Experimental investigation and thermodynamic calculation in the Al–Be–Si ternary system
  21. Thermodynamic assessment of the Ca–Sn system
  22. Interfacial reaction between Cu and Ti2SnC during processing of Cu–Ti2SnC composite
  23. Effects of heat treatment on the lubricated sliding wear behaviour of zinc-based alloy containing nickel under varying test conditions
  24. Influence of Ce, K, and Na on spheroidization of eutectic carbides in low-tungsten white cast iron
  25. Notifications/Mitteilungen
  26. Personal/Personelles
  27. Press/Presse
https://doi.org/10.1515/ijmr-2005-0223
Schlagwörter für diesen Artikel
Nanoindentation; Nanoscratch; Viscoplasticity index; Ductile-brittle transition; Polymeric surface

Artikel in diesem Heft

  1. Frontmatter
  2. Editorial
  3. nanomech 5
  4. Articles Basic
  5. Quantitative evaluation of nanoindents: Do we need more reliable mechanical parameters for the characterization of materials?
  6. Nanoindentation investigation of solid-solution strengthening in III-V semiconductor alloys
  7. Comparison between conventional Vickers hardness and indentation hardness obtained with different instruments
  8. On the pressure dependence of the indentation modulus
  9. A review on the reverse analysis for the extraction of mechanical properties using instrumented Vickers indentation
  10. Articles Applied
  11. Quasi-static and dynamic depth-sensing indentation measurements to characterize wear and mar resistance of coating–polymer systems
  12. Obtaining mechanical parameters for metallisation stress sensor design using nanoindentation
  13. Direct measurement of nanoindentation area function by metrological AFM
  14. A usable concept for the indentation of thin porous films
  15. Analysis of the ductile/brittle transition during a scratch test performed into polymeric film deposited on a PMMA substrate
  16. Nanomechanical and nanotribological properties of polymeric ultrathin films for nanoimprint lithography
  17. Adhesive and nanomechanical properties of polymeric films deposited on silicon
  18. Modelling of the nanoindentation process of ultrathin films
  19. Regular articles
  20. Experimental investigation and thermodynamic calculation in the Al–Be–Si ternary system
  21. Thermodynamic assessment of the Ca–Sn system
  22. Interfacial reaction between Cu and Ti2SnC during processing of Cu–Ti2SnC composite
  23. Effects of heat treatment on the lubricated sliding wear behaviour of zinc-based alloy containing nickel under varying test conditions
  24. Influence of Ce, K, and Na on spheroidization of eutectic carbides in low-tungsten white cast iron
  25. Notifications/Mitteilungen
  26. Personal/Personelles
  27. Press/Presse
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