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Area function calibration in nanoindentation using the hardness instead of Young's modulus of fused silica as a reference value

Published/Copyright: May 23, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 98 Issue 5

Abstract

For nanoindentation hardness and Young's modulus measurements the area function of the indenter has to be calibrated carefully since direct measurement of the contact area is not possible. Most often this is done by making a series of indentations into a material with known Young's modulus, e. g. fused silica. In this paper it will be shown that this method may lead to significant deviations in hardness values found over the lifetime of the indenter due to successive rounding of the tip. Additionally, depth-dependent hardness values may apparently be found which would falsify all hardness determinations. Using instead the hardness of fused silica as a reference value these problems will be avoided. Additionally, the calibration becomes independent of material constants such as the Young's modulus of the diamond tip and the Poisson ratios of both indenter and sample, which enter into the conventional calibration method.

Finally, this paper discusses whether the indentation modulus determined by nanoindentation and the Young's modulus determined by, for example, tensile testing, are quantitatively equal. This is a precondition for the traceability of the Young's modulus method often mentioned as its main advantage.

Keywords: Nanoindentation; Area function calibration; Indentation modulus; Tensile modulus; Hardness
* Correspondence address, Dr. Kirsten Ingolf Schiffmann, Fraunhofer Institut für Schicht- und Oberflächentechnik, Bienroder Weg 54E, D-38108 Braunschweig, Germany, Tel.: +49 531 2155 577, Fax: +49 531 2155 900, E-mail: , www.ist.fhg.de

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Received: 2007-1-12
Accepted: 2007-3-15
Published Online: 2013-05-23
Published in Print: 2007-05-01

© 2007, Carl Hanser Verlag, München

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  15. Microscale characterization of bitumen – back-analysis of viscoelastic properties by means of nanoindentation
  16. Applied
  17. Visco-elastic properties of thin nylon films using multi-cycling nanoindentation
  18. Area function calibration in nanoindentation using the hardness instead of Young's modulus of fused silica as a reference value
  19. Multiscale modelling of nanoindentation
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  21. Notifications
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https://doi.org/10.3139/146.101488
Keywords for this article
Nanoindentation; Area function calibration; Indentation modulus; Tensile modulus; Hardness

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Basic
  6. Getting accurate nanoindentation data from time-dependent and microstructural effects of zinc
  7. Indentation-induced densification of soda-lime silicate glass
  8. Nanomechanical characterization of relaxation processes in As–S chalcogenide glasses
  9. Nanoindentation behavior and mechanical properties measurement of polymeric materials
  10. Model of a superlattice indentation
  11. Nanomechanical studies of MEMS structures
  12. Mechanical properties of nanostructured polymer particles for anisotropic conductive adhesives
  13. Nanomechanical studies of ultrathin polymeric resist films
  14. Testing the viscoelastic properties of SU8 photo resist thin films at different stages of processing by nanoindentation creep and stress relaxation
  15. Microscale characterization of bitumen – back-analysis of viscoelastic properties by means of nanoindentation
  16. Applied
  17. Visco-elastic properties of thin nylon films using multi-cycling nanoindentation
  18. Area function calibration in nanoindentation using the hardness instead of Young's modulus of fused silica as a reference value
  19. Multiscale modelling of nanoindentation
  20. Unusual architecture of the exceedingly tough Macadamia “nut”-shell as revealed by atomic force microscopy and nanomechanics
  21. Notifications
  22. DGM News
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