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Lubricants 2017, 5(3), 20; doi:10.3390/lubricants5030020

Wear Characterization of Cemented Carbides (WC–CoNi) Processed by Laser Surface Texturing under Abrasive Machining Conditions

1
CIEFMA-Departament de Ciència dels Materials i Enginyeria Metal.lúrgica, Universitat Politècnica de Catalunya, EEBE—Campus Diagonal Besòs, Barcelona 08019, Spain
2
Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona 08019, Spain
3
Institute of Production Engineering, Saarland University, Saarbrücken 66123, Germany
*
Author to whom correspondence should be addressed.
Received: 3 June 2017 / Revised: 14 June 2017 / Accepted: 19 June 2017 / Published: 22 June 2017
(This article belongs to the Special Issue Improvement of Friction and Wear by Laser Surface Texturing)
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Abstract

Cemented carbides are outstanding engineering materials widely used in quite demanding material removal applications. In this study, laser surface texturing is implemented for enhancing, at the surface level, the intrinsic bulk-like tribological performance of these materials. In this regard, hexagonal pyramids patterned on the cutting surface of a tungsten cemented carbide grade (WC–CoNi) have been successfully introduced by means of laser surface texturing. It simulates the surface topography of conventional honing stones for abrasive application. The laser-produced structure has been tested under abrasive machining conditions with full lubrication. Wear of the structure has been characterized and compared, before and after the abrasive machining test, in terms of changes in geometry aspect and surface integrity. It is found that surface roughness of the machined workpiece was improved by the laser-produced structure. Wear characterization shows that laser treatment did not induce any significant damage to the cemented carbide. During the abrasive machining test, the structure exhibited a high wear resistance. Damage features were only discerned at the contacting surface, whereas geometrical shape of pyramids remained unchanged. View Full-Text
Keywords: cemented carbide; laser surface texturing; abrasive machining; wear; surface integrity cemented carbide; laser surface texturing; abrasive machining; wear; surface integrity
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MDPI and ACS Style

Fang, S.; Llanes, L.; Bähre, D. Wear Characterization of Cemented Carbides (WC–CoNi) Processed by Laser Surface Texturing under Abrasive Machining Conditions. Lubricants 2017, 5, 20.

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