首页|Wear evolution of microstructured diamond grains in WC/Co cemented carbide single grain scratching
Wear evolution of microstructured diamond grains in WC/Co cemented carbide single grain scratching
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NSTL
Elsevier
? 2021 Elsevier B.V.In this study, the wear evolution and wear mechanism of microstructured diamond abrasive grains in scratching WC/Co were investigated. Surface microstructures with 0° groove arrays, 45° groove arrays, square arrays, rhombus arrays, and wave groove arrays were initially fabricated using a nanosecond pulsed laser without obvious surface damage. The grain wear evolution process, characteristics of the scratching surface, and impact on the specific scratching force were then analysed. The results show that surface microstructuring affects the life extension of the diamond grains, the effectiveness of which can be sorted in the following descending order: square arrays, rhombus arrays, 45° groove arrays, 0° groove arrays, no microstructure, and wave groove arrays. Finally, the wear evolution process of the microstructured diamond grains was identified, which mainly covers adhesion→cracking→micro-fracture of the unit-abrasives→macro-fracture of the unit-abrasives→macro-fracture of the grain→pull-out, and the wear mechanism of the diamond grains was also explored.
NSTL
Elsevier
