Publication: Wear resistance of nanostructured Cr-based WC hardmetals sintered by spark plasma sintering
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2020-01
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Elsevier
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Abstract
Nanostructured Cr-based WC hardmetals are successfully sintered by spark plasma sintering. The wear behaviour of these Cr-based WC hardmetals with different C contents ranging from 5.57 wt% to 6.91 wt%, is evaluated performing sliding wear tests under two different wear conditions. This work analyses the influence of the C content on the wear performance through the study of the phase formation and WC grain size. The Cr-based hardmetal with 5.57 wt% C content exhibits a lower wear rate than Co-based WC hardmetals tested under similar dry ball-on-plate wear conditions, even considering that these Co-based WC hardmetals have higher WC content (90 wt%) than Cr-based WC hardmetals (83.2 wt%). The combination of a nanosized WC grain and the avoidance of brittle (Cr,Fe)7C3 or soft graphite phases leads to a superior wear performance. Thus, the use of Cr-based binders in the hardmetal industry, alternatively to Co-based binders, is promising in applications in which high wear resistance is needed.
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Erratum to 'Wear resistance of nanostructured Cr-based WC hardmetals sintered by spark plasma sintering' [International Journal of Refractory Metals and Hard Materials Volume 87, February 2020, 105121]. DOI: https://doi.org/10.1016/j.ijrmhm.2020.105206
Keywords
Cr-based WC hardmetals, Dry sliding wear, Nanocrystalline, Spark plasma sintering, Wear resistance
Bibliographic citation
Deng, X., Cinca, N., Garbiec, D., Torralba, J. M. & García-Junceda, A. (2020). Wear resistance of nanostructured Cr-based WC hardmetals sintered by spark plasma sintering. International Journal of Refractory Metals and Hard Materials, 86, 105092.