The University of Southampton
University of Southampton Institutional Repository

Effect of abrasive particle size and the influence of microstructure on the wear mechanisms in wear-resistant materials

Wood, R.J.K., Wharton, J.A., Thakare, M.R. and Menger, C. (2012) Effect of abrasive particle size and the influence of microstructure on the wear mechanisms in wear-resistant materials Wear, 276-277, pp. 16-28. (doi:10.1016/j.wear.2011.11.008).

Record type: Article


Downhole drilling operations expose tungsten carbide based sintered (WC–5.7Co–0.3Cr) and sprayed (WC–10Co–4Cr) hardmetals to abrasives of different sizes. Although the effect of abradant size on the abrasive wear of metals has been widely studied, the effect of particle size on the abrasive wear of sintered and sprayed tungsten carbide-based hardmetals has not been examined previously. The abrasion of hardmetal composite surfaces is complex due to the presence of hard and soft phases which respond differently during abrasive wear, where an increase in abrasive size leads to a change in the wear mechanism which significantly affects the overall wear rates. Three different abrasive sizes, 4.5 ?m, 17.5 ?m and 180 ?m, were used in a modified ASTM G65 rubber wheel abrasion test to examine the effects of abrasive size on wear in a sintered WC and a D-gun sprayed WC-based coating. Uniquely, influential parameters affecting the wear mechanisms have been examined and identified with the fundamental material properties of both abrasives and the multi-phase materials. As a unique way of mapping abrasion performance, a parameter previously developed for the micro-abrasion tester, ‘severity of contact’, has been reworked and plotted against a ‘brittleness factor’ parameter developed in this work. Plotting these parameters can explain the sharp rise in wear rates associated with the transition from ductile, plastic deformation dominated material removal to a more fracture-related material removal as the size of abrasives increases. This work has developed new insights into how hardmetal composites respond to change in abrasive size and provides a basis for controlling the abrasive particle size.

PDF abrasion_model_paper.pdf - Version of Record
Restricted to Repository staff only
Download (2MB)

More information

e-pub ahead of print date: 6 December 2011
Published date: 15 February 2012
Keywords: wear, wc-based coatings, deformation, hardmetals, size effect
Organisations: nCATS Group


Local EPrints ID: 338133
ISSN: 0043-1648
PURE UUID: 95cc9ad0-a79a-4d2f-9d69-858ddda28e61
ORCID for R.J.K. Wood: ORCID iD
ORCID for J.A. Wharton: ORCID iD

Catalogue record

Date deposited: 10 May 2012 09:13
Last modified: 18 Jul 2017 05:59

Export record



Author: R.J.K. Wood ORCID iD
Author: J.A. Wharton ORCID iD
Author: M.R. Thakare
Author: C. Menger

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.