Dry sliding friction and wear response of WC-Co hardmetal pairs in linearly reciprocating and rotating contact
- Yeczain Perez Delgado
- Koen Bonny
- Patrick De Baets
- Patric Daniel Neis
- Vanessa Rodriguez Fereira
- O. Malek
- J. Vleugels
- B. Lauwers
Abstract
This paper presents an experimental evaluation of friction and wear properties of WC-Cocemented carbides. A comparison is made between unlubricated rotating and linearly reciprocating pin-onplate sliding pairs. The plate specimens were WC-10wt%Co grades surface finished by polishing orsequential wire-EDM steps, whereas WC-6wt%Co pins were used as counter body. The tests were carriedout at room temperature using a sliding speed of 0.30m/s and mean Hertzain contact pressures of 1.76 and2.08 GPa, i.e., normal contact loads of 15N and 25N, respectively. The worn surfaces on plate sampleswere quantified in terms of 2–D wear profiles obtained by means of surface topography scanningequipment. Wear mechanisms such as polishing and abrasion were identified using optical microscopy.Inferior tribological characteristics for wire-EDM surface finish compared to polishing were found. Higherfriction coefficient and wear levels were measured in unidirectional rotating sliding experiments comparedto linearly reciprocating test conditions.
How to Cite:
Perez Delgado, Y. & Bonny, K. & De Baets, P. & Neis, P. & Rodriguez Fereira, V. & Malek, O. & Vleugels, J. & Lauwers, B., (2011) “Dry sliding friction and wear response of WC-Co hardmetal pairs in linearly reciprocating and rotating contact”, International Journal of Sustainable Construction and Design 2(1), 12-18. doi: https://doi.org/10.21825/scad.v2i1.20430
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