from the conferences organized by TANGER Ltd. provisional website
This paper presents the influence of laser texturing on the tribological properties of sintered tool materials not coated and coated in the process of chemical deposition from the gas phase. Sintered carbide substrate, sialon ceramics substrate and the Al2O3+TiN coating deposited on sialon ceramic substrate were subjected to laser treatment. Neodymium laser Nd: YVO4 was used for laser texturing. The work presents abrasion resistance tests using the "pin on disc" method. The examinations were carried out using a scanning electron microscope (SEM), surface morphology - using atomic force microscope (AFM), confocal microscope and optical profilometer. The chemical composition in micro-areas was also examined by the use of the EDS X-ray energy spectrometer, roughness and abrasion profiles were measured. Subjecting laser treatment, the surface of tool materials, results in changing the micro and nano structure. In the micro scale, so-called lubrication reservoirs, while in the nano scale, so-called nanoripples commonly referred to as LIPSS (Laser Induced Periodical Surface Structures) are created. The value of the friction coefficient ranged from 0.7 for laser-free non-textured surfaces to 0.4 for laser-textured surfaces. As a result of the tests carried out, it was found that the creation of a textured surface layer in micro and nano scale, resulted in a significant increase of tool materials wear resistance.Keywords: Laser texturing, LIPSS, Tool materials, CVD
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