Frictional Performance Assessment of Cemented Carbide Surfaces Textured by Laser

International Materials Research Meeting in the Greater Region: "Current Trends in the Characterisation of Materials and Surface Modification"

Fang, S.^1,2,3 ; Llanes, L.^1,2 ; Klein, S.^3 ; Gachot, C.^4 ; Rosenkranz, A.^4 ; Bähre, D.^3 ; Mücklich, F.^4

CIEFMA - Dept. Materials Science and Engineering, Universitat Politècnica de Catalunya, EEBE-Campus Diagonal Besòs, Barcelona

08019, Spain^1

Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona

08019, Spain^2

Institute of Production Engineering, Saarland University, Saarbrücken

66123, Germany^3

Department of Functional Materials, Saarland University, Saarbrücken

66123, Germany^4

关键词: Advanced engineerings;    Cemented carbides;    Cemented tungsten carbides;    Direct laser interference patterning;    Geometrical precision;    Laser surface texturing;    Performance assessment;    Surface modification methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/258/1/012006/pdf
DOI  :  10.1088/1757-899X/258/1/012006

来源: IOP

【 摘 要 】

Cemented carbides are advanced engineering materials often used in industry for manufacturing cutting tools or supporting parts in tribological system. In order to improve service life, special attention has been paid to change surface conditions by means of different methods, since surface modification can be beneficial to reduce the friction between the contact surfaces as well as to avoid unintended damage. Laser surface texturing is one of the newly developed surface modification methods. It has been successfully introduced to fabricate some basic patterns on cemented carbide surfaces. In this work, Direct Laser Interference Patterning Technique (DLIP) is implemented to produce special line-like patterns on a cobalt (Co) and nickel (Ni) based cemented tungsten carbide grade. It is proven that the laser-produced patterns have high geometrical precision and quality stability. Furthermore, tribology testing using a nano-tribometer unit shows that friction is reduced by the line-like patterns, as compared to the polished one, under both lubricated and dry testing regimes, and the reduction is more pronounced in the latter case.