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Tribology Letters

, Volume 53, Issue 1, pp 173–179 | Cite as

A Functional Form for Wear Depth of a Ball and a Flat Surface

  • D. C. Sutton
  • G. Limbert
  • D. Stewart
  • R. J. K. Wood
Original Paper

Abstract

Formulae are derived from first principles which predict the wear depth of a ball and a flat surface through time as they slide against each other, in relation to any phenomenological law for wear volume, and taking into account the effect of component geometry. The equations can be fit using experimental wear volume data from ball-on-flat tribometers. The formulae remove previous limiting approximations made in the literature and extend to the prediction of the wear depth of both contacting surfaces. The wear model accords with a previous model that is validated by pin-on-disc testing of a steel/steel contact. The current paper uses the formulae derived to predict the wear depth of a diamond-like carbon (DLC) coating and a steel ball as they slide against each other in deionised water. An Archard equation is used to predict the wear volume of each surface; however, a DLC coating is known to form a transfer layer which reduces the rate of wear, and since this scenario does not obey Archard’s law directly, a time-dependent-specific wear rate is used to fit a semi-empirical model to experimental results. The final model predicts the wear depth of the ball and flat accurately.

Keywords

Wear Archard DLC 

Notes

Acknowledgments

We acknowledge the support of the National Centre for Advanced Tribology (nCATS) and EPSRC Grant EP/F034296/1. D. C. Sutton acknowledges support through a Rolls-Royce sponsored PhD studentship at the University of Southampton.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • D. C. Sutton
    • 1
  • G. Limbert
    • 1
    • 2
  • D. Stewart
    • 3
  • R. J. K. Wood
    • 1
  1. 1.National Centre for Advanced Tribology at Southampton (nCATS), Engineering Sciences, Faculty of Engineering and the EnvironmentUniversity of SouthamptonSouthamptonUK
  2. 2.Bioengineering Science Research Group, Engineering Sciences, Faculty of Engineering and the EnvironmentUniversity of SouthamptonSouthamptonUK
  3. 3.Materials, Chemistry and CorrosionRolls-RoyceDerbyUK

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