Wear performance of spark plasma sintered Co/WC and cBN/Co/WC composites

Yaman, Bilge and Mandal, Hasan (2014) Wear performance of spark plasma sintered Co/WC and cBN/Co/WC composites. International Journal of Refractory Metals and Hard Materials, 42 . pp. 9-16. ISSN 0958-0611

Full text not available from this repository. (Request a copy)


The present study investigates the efficiency of spark plasma sintering (SPS) technique on the tribological behavior of tungsten carbide composites, and aims to develop the wear resistance of these composites by addition of cubic boron nitride (cBN). Wear tests of spark plasma sintered 6(wt.%)Co/WC, 25(vol%)cBN/6Co/WC and conventionally fabricated 6(wt.%)Co/WC as a reference sample were performed by ball-on-disk contact with dry and rotational sliding at room temperature in order to determine the friction coefficient and wear rate. Wear mechanisms were explained by using SEM observations and the wear rates were computed by a surface profilometer. In all cases, the major wear mechanisms were observed gradually in the form of microcraking, material removal by grain pull out, and generation and spalling of a tribochemical layer. Based on the experimental results, the addition of cBN considerably enhanced the wear resistance of tungsten carbides. In addition, these results revealed that SPS process has outstanding potential for the fabrication of tungsten carbides with high wear properties for tribological applications.
Item Type: Article
Uncontrolled Keywords: Tungsten carbide composites; Cubic boron nitride; Spark plasma sintering technique; Wear resistance
Divisions: Research and Graduate Policies
Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences
Depositing User: Hasan Mandal
Date Deposited: 26 Dec 2014 12:20
Last Modified: 02 Aug 2019 15:56
URI: https://research.sabanciuniv.edu/id/eprint/26580

Actions (login required)

View Item
View Item