Articles
Authors: Y. Perez Delgado , K. Bonny , P. De Baets , V. Rodriguez , P. Neis , J. Sukumaran , O. Malek , J. Vleugels , B. Lauwers
this paper presents an experimental evaluation of friction coefficient and wear of WC binderlessceramics. The tests were conducted at room temperature and atmospheric conditions according to theASTM G99-95a standard. Silicon carbide (SiC) balls were used as static counterpart. The tests wereperformed at a rotating sliding speed of 0.3 m/s and an initial mean Hertzian contact pressure of 1.9 GPa.The disk specimens were surface finished by grinding. On-line monitoring and post-mortem analysis withtwo independent techniques, i.e., surface profilometry and optical microscopy, were used to elucidate thetribological characteristics of the studied material. Results of the post-mortem measurements werecompared to a geometrical wear model for calculation of the volume of the worn cap of the ball. Thiscalculation appeared to be in good agreement with the on-line wear monitoring. The first 100 m of slidingwas identified as running-in period. Beyond a sliding distance of 100 m a steady stage in penetration depthwas reached, while a higher fluctuation in friction coefficient was observed, which could be attributed to theinteraction with wear particles and simultaneous formation and delamination of debris layer, polishing andabrasion.
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How to Cite: Perez Delgado, Y. , Bonny, K. , De Baets, P. , Rodriguez, V. , Neis, P. , Sukumaran, J. , Malek, O. , Vleugels, J. & Lauwers, B. (2012) “On-line and post-mortem wear measurement of static counterpart in a ball-on-disk test”, International Journal of Sustainable Construction and Design. 3(2). doi: https://doi.org/10.21825/scad.v3i2.20569