https://sam.ensam.eu:443 The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. Tue, 14 Apr 2026 00:22:47 GMT 2026-04-14T00:22:47Z http://hdl.handle.net/10985/24744 Coatings deposited by physical vapor deposition (PVD) on high-speed steel used in the processing of wood materials CZARNIAK, Paweł; KUCHARSKA, Beata; SZYMANOWSKI, Karol; NOUVEAU, Corinne; PANJAN, Peter; KULIKOWSKI, Krzysztof; ROGUSKA, Agata; GLOEH, Maksymilian; SOBIECKI, Jerzy Robert In this study the use of AlTiN/aCN, TiAlN/TiN and three types of CrAlN/CrN coatings deposited on HSS steel was investigated. These protective coatings were prepared using PVD (physical vapor deposition) method. The objective of this study was to compare the microstructure, chemical composition and properties of Cr, Al or Ti based coatings deposited on a substrate made of high-speed steel HSS. The thicknesses of coatings based on titanium were approx. 4 µm, and those based on chromium were less than 1 µm. The morphology and chemical composition were studied using scanning electron microscopy (SEM) and X-ray dispersion spectroscopy (EDX). The X-ray photoelectron spectroscopy (XPS) method was applied. The adhesion was evaluated by scratch test. Nanohardness and durability tests of uncoated and coated knifes were performed. It was found that the knifes made of HSS covered with two-layer TiAlN/aCN coating exhibited the best durability characteristic. Coatings containing chromium were less durable due to their small thickness. The highest nanohardness was found in the AlTiN/TiN coating due to its multi-layer nature. The nanohardness of the other coatings is comparable but more than two times lower compared to the multilayer AlTiN/TiN nanocoating. Thu, 14 Dec 2023 00:00:00 GMT http://hdl.handle.net/10985/24744 2023-12-14T00:00:00Z CZARNIAK, Paweł KUCHARSKA, Beata SZYMANOWSKI, Karol NOUVEAU, Corinne PANJAN, Peter KULIKOWSKI, Krzysztof ROGUSKA, Agata GLOEH, Maksymilian SOBIECKI, Jerzy Robert In this study the use of AlTiN/aCN, TiAlN/TiN and three types of CrAlN/CrN coatings deposited on HSS steel was investigated. These protective coatings were prepared using PVD (physical vapor deposition) method. The objective of this study was to compare the microstructure, chemical composition and properties of Cr, Al or Ti based coatings deposited on a substrate made of high-speed steel HSS. The thicknesses of coatings based on titanium were approx. 4 µm, and those based on chromium were less than 1 µm. The morphology and chemical composition were studied using scanning electron microscopy (SEM) and X-ray dispersion spectroscopy (EDX). The X-ray photoelectron spectroscopy (XPS) method was applied. The adhesion was evaluated by scratch test. Nanohardness and durability tests of uncoated and coated knifes were performed. It was found that the knifes made of HSS covered with two-layer TiAlN/aCN coating exhibited the best durability characteristic. Coatings containing chromium were less durable due to their small thickness. The highest nanohardness was found in the AlTiN/TiN coating due to its multi-layer nature. The nanohardness of the other coatings is comparable but more than two times lower compared to the multilayer AlTiN/TiN nanocoating. http://hdl.handle.net/10985/27104 Influence of Substrate Type Made of WC-Co on CrN/CrAlN Coatings’ Durability During Machining of Particleboard CZARNIAK, Pawel; KUCHARSKA, Beata; SZYMANOWSKI, Karol; CORINNE, NOUVEAU; LAGADRILLERE, Denis; BETIUK, Marek; RYGIER, Tomasz; KULIKOWSKI, Krzysztof; KUSZNIEREWICZ, Zbigniew; SOBIECKI, Jerzy Robert This paper investigates the influence of substrate grain size on the behavior of a multilayer CrN/CrAlN coating, with the bilayer thickness varying across the cross-section in the range of 200–1000 nm. The substrate tools were made of WC-Co sintered carbide with three different grain sizes. The coatings were subjected to mechanical and tribological tests to assess their performance, including nanohardness, scratch resistance, and tribological testing. The coating’s roughness was measured using a 2D profilometer. Additionally, the chemical composition and surface morphology were analyzed using Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDX). The durability tests were performed on an industrial CNC machine tool on the particleboard. The results revealed that tools with ultra-fine nano-grain (S) and micro-grain (T) WC-Co substrates exhibited a significant increase in tool durability by 28% and 44%, respectively. Significant differences in the microgeometry of the substrate U, especially in relation to the tool based on substrate S, explain the lack of improvement in its durability despite the use of a multilayer coating. The publication was financed by the science development fund of the Warsaw University of Life Sciences—SGGW (Decision of the director of the SGGW main library dated 29 July 2025). Fri, 24 Oct 2025 00:00:00 GMT http://hdl.handle.net/10985/27104 2025-10-24T00:00:00Z CZARNIAK, Pawel KUCHARSKA, Beata SZYMANOWSKI, Karol CORINNE, NOUVEAU LAGADRILLERE, Denis BETIUK, Marek RYGIER, Tomasz KULIKOWSKI, Krzysztof KUSZNIEREWICZ, Zbigniew SOBIECKI, Jerzy Robert This paper investigates the influence of substrate grain size on the behavior of a multilayer CrN/CrAlN coating, with the bilayer thickness varying across the cross-section in the range of 200–1000 nm. The substrate tools were made of WC-Co sintered carbide with three different grain sizes. The coatings were subjected to mechanical and tribological tests to assess their performance, including nanohardness, scratch resistance, and tribological testing. The coating’s roughness was measured using a 2D profilometer. Additionally, the chemical composition and surface morphology were analyzed using Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDX). The durability tests were performed on an industrial CNC machine tool on the particleboard. The results revealed that tools with ultra-fine nano-grain (S) and micro-grain (T) WC-Co substrates exhibited a significant increase in tool durability by 28% and 44%, respectively. Significant differences in the microgeometry of the substrate U, especially in relation to the tool based on substrate S, explain the lack of improvement in its durability despite the use of a multilayer coating.