Manufacturing Technology 2018, 18(3):379-386 | DOI: 10.21062/ujep/109.2018/a/1213-2489/MT/18/3/379

Analyse of Tribological Properties of Layers Created by Plasma Nitriding + DLC

David Dobrocky, Zdenek Pokorny, Zbynek Studeny, Thanh Van Doan
Department of Mechanical Engineering, Faculty of Military Technology, University of Defence, Kounicova 65, Brno 662 10, Czech Republic

Plasma technology of deposition of thin layers is currently the commonly used technology serving to influence the surface properties of various materials (metals, polymers, ceramics, etc.). The great advantage of applied thin layers is that although they can significantly change the surface properties of coated materials, their advantageous volumetric properties are preserved. The experimental part of work describes the evaluation of the properties of duplex system of the plasma nitrided layer with DLC coating and confronts them with the properties of plasma nitrided layers and polished surfaces. 42CrMo4 and 17Ni4CrMo steels were chosen for experiment. Experimental part deals with the practical analysis of the determination of tribological properties of thin film-substrate (specifically nitrided layer-DLC coating). The tribological properties of selected steels were evaluated using the "Pin on Disc" method. Modified layer formed by duplex system PN+DLC showed up to 8x lower coefficient of friction than nitrided or only polished surface.

Keywords: Plasma Nitriding, Layer, DLC, Pin-On-Disc, Friction

Published: June 1, 2018  Show citation

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Dobrocky D, Pokorny Z, Studeny Z, Doan TV. Analyse of Tribological Properties of Layers Created by Plasma Nitriding + DLC. Manufacturing Technology. 2018;18(3):379-386. doi: 10.21062/ujep/109.2018/a/1213-2489/MT/18/3/379.
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