Research on the Tribological Properties of a New Generation of Multi-Layer Nanostructured PVD Coatings for Increasing the Technological Lifetime of Moulds
Janette Brezinová,
Miroslav Džupon,
Viktor Puchý,
Jakub Brezina,
Pavlo Maruschak,
Anna Guzanová,
Lýdia Sobotová,
Miroslav Badida
Affiliations
Janette Brezinová
Department of Automotive Production, Faculty of Mechanical Engineering, Technical University of Kosice, Letná 9, 042 00 Košice, Slovakia
Miroslav Džupon
Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
Viktor Puchý
Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
Jakub Brezina
Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Kosice, Letná 9, 042 00 Košice, Slovakia
Pavlo Maruschak
Department of Industrial Automation, Ternopil Ivan Puluj National Technical University, Ruska Str. 56, 46001 Ternopil, Ukraine
Anna Guzanová
Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Kosice, Letná 9, 042 00 Košice, Slovakia
Lýdia Sobotová
Department of Business Management and Environmental Engineering, Faculty of Mechanical Engineering, Technical University of Kosice, Letná 9, 042 00 Košice, Slovakia
Miroslav Badida
Department of Business Management and Environmental Engineering, Faculty of Mechanical Engineering, Technical University of Kosice, Letná 9, 042 00 Košice, Slovakia
This paper presents the results of research focused on increasing the lifespan of HPDC moulds for casting aluminium alloys by applying duplex PVD coatings in combination with laser texturing the base material before the coatings’ deposition. This article describes the HPDC process and the degradation mechanisms of the moulds that arose during this process. The PVD nanostructured coatings utilised, the methods of their deposition, and the evaluation of their wear resistance are defined in this paper. The surface texturing process is described alongside the description of the analysis of the wear of the functional parts of the mould after decommissioning, which was carried out by visual inspection and optical and light microscopy. Three types of PVD duplex coatings were analysed during our study. The coatings were deposited using the LARC technology method (lateral rotating cathode). Subsequently, the procedure of laser texturing in the form of dimple textures using a laser was proposed. The quality of the coatings was evaluated under tribological conditions by means of the “Ball on disc” method. Based on the experimental results, recommendations for practice are established.
