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Scratch testing of WC/Co hardmetals

Scratch testing of WC/Co hardmetals
Scratch testing of WC/Co hardmetals
Two grades of WC/Co hardmetals, a fine-grained sample and coarse-grained sample, were tested using single and multiple scratch tests with a spherical diamond stylus. The variation in damage mechanism with increasing number of scratch repeats was analysed using SEM, FIB and 3D confocal microscopy. An interesting feature is the formation of a thin tribo-layer on the surface of the scratched region, which becomes more evident at increased scratch repeats. Variations in the coefficient of friction were attributed to changes in the topography of the stylus and formation of a tribo-layer on the scratched surface.
WC/Co hardmetals, tribo-layer, wear, coefficient of friction
0301-679X
77-86
Zunega, J.C.
b6a34fdc-d34a-4650-aa7e-51910d366837
Gee, M.G.
0139078a-22c5-41f2-a7f9-7069ceb3590a
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Walker, J.
b300eafd-5b0a-4cf5-86d2-735813b04c6f
Zunega, J.C.
b6a34fdc-d34a-4650-aa7e-51910d366837
Gee, M.G.
0139078a-22c5-41f2-a7f9-7069ceb3590a
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Walker, J.
b300eafd-5b0a-4cf5-86d2-735813b04c6f

Zunega, J.C., Gee, M.G., Wood, R.J.K. and Walker, J. (2012) Scratch testing of WC/Co hardmetals. Tribology International, 54, 77-86. (doi:10.1016/j.triboint.2012.02.027).

Record type: Article

Abstract

Two grades of WC/Co hardmetals, a fine-grained sample and coarse-grained sample, were tested using single and multiple scratch tests with a spherical diamond stylus. The variation in damage mechanism with increasing number of scratch repeats was analysed using SEM, FIB and 3D confocal microscopy. An interesting feature is the formation of a thin tribo-layer on the surface of the scratched region, which becomes more evident at increased scratch repeats. Variations in the coefficient of friction were attributed to changes in the topography of the stylus and formation of a tribo-layer on the scratched surface.

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More information

Accepted/In Press date: 18 February 2012
e-pub ahead of print date: 17 March 2012
Published date: October 2012
Keywords: WC/Co hardmetals, tribo-layer, wear, coefficient of friction
Organisations: Engineering Science Unit, nCATS Group, Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 386524
URI: http://eprints.soton.ac.uk/id/eprint/386524
ISSN: 0301-679X
PURE UUID: b64265af-7d74-464d-9f45-9fcfa7f724bb
ORCID for R.J.K. Wood: ORCID iD orcid.org/0000-0003-0681-9239

Catalogue record

Date deposited: 02 Feb 2016 10:40
Last modified: 15 Oct 2019 00:53

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