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Impact of Cr3C2/VC addition on the dry sliding friction and wear response of WC–Co cemented carbides |
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| Authors: | K Bonny P De Baets J Vleugels S Huang O Van der Biest B Lauwers |
| Affiliation: | aGhent University (UGent), Department of Mechanical Construction & Production, IR04, Sint-Pietersnieuwstraat 41, B-9000 Gent, Belgium;bCatholic University Leuven (K.U.Leuven), Department of Metallurgy & Materials Engineering, MTM, Kasteelpark Arenberg 44, B-3001 Leuven, Belgium;cCatholic University Leuven (K.U.Leuven), Department of Mechanical Engineering, PMA, Celestijnenlaan 300 B, B-3001 Leuven, Belgium |
| Abstract: | Two grades of WC–10 wt.%Co cemented carbide with or without addition of Cr3C2/VC grain growth inhibitor during liquid phase sintering were produced with the goal to investigate their reciprocating sliding friction and wear behaviour against WC–6 wt.%Co cemented carbide under unlubricated conditions. The tribological characteristics were obtained on a Plint TE77 tribometer using distinctive normal contact loads. The generated wear tracks were analyzed by scanning electron microscopy and quantified topographically using surface scanning equipment. The post-mortem obtained wear volumes were compared to the online assessed wear. Correlations between wear volume, wear rate and coefficient of friction on the one hand and sliding distance and microstructural properties on the other hand were determined, revealing a significant influence of Cr3C2/VC on the friction characteristics and wear performance. |
| Keywords: | WC– Co cemented carbide Grain growth inhibitor Dry friction Reciprocating sliding wear Pin-on-plate |
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