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Effect of 10 wt% VC on the Friction and Sliding Wear of Spark Plasma-Sintered WC-12 wt% Co Cemented Carbides
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Number of Authors: 4
2017 (English)In: Tribology Transactions, ISSN 1040-2004, E-ISSN 1547-397X, Vol. 60, no 2, 276-283 p.Article in journal (Refereed) Published
Abstract [en]

The effect of 10 wt% VC addition on the friction and sliding wear response of WC-12 wt% Co cemented carbides produced by spark plasma sintering (SPS) was studied. The SPS of WC-12 wt% Co alloys with and without 10 wt% VC, at 1100 and 1130 degrees C, respectively, yielded dense materials with minimal porosity. No eta phase was found in any of the alloys. The WC-12 wt% Co-10 wt% VC alloy showed the formation of a hard WV4C5 phase, which improved the alloy's hardness. Friction and dry sliding wear tests were done using a ball-on-disk configuration under an applied load of 10 N and sliding speed of 0.26 m.s(-1), and a 100Cr-steel ball was used as the counterface. A significant improvement in the sliding wear response of the harder and more fracture tough WC-12 wt% Co-10 wt% VC alloy compared to the WC-12 wt% Co alloy was found. Analysis of the worn surfaces by scanning electron microscopy showed that the wear mechanisms included plastic deformation, preferential binder removal, adhesion, and carbide grain cracking and fragmentation.

Place, publisher, year, edition, pages
2017. Vol. 60, no 2, 276-283 p.
Keyword [en]
Tungsten, friction, wear mechanisms, hardness
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:su:diva-141282DOI: 10.1080/10402004.2016.1159360ISI: 000396779900009OAI: oai:DiVA.org:su-141282DiVA: diva2:1086975
Available from: 2017-04-05 Created: 2017-04-05 Last updated: 2017-04-05Bibliographically approved

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CiteExportLink to record
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