The Tool Life and Coating-Substrate Adhesion of AlCrSiN-Coated Carbide Cutting Tools Prepared by LARC with Respect to the Edge Preparation and Surface Finishing
Nanocomposite AlCrSiN hard coatings were deposited on the cemented carbide substrates with a negative substrate bias voltage within the range of −80 to −120 V using the cathodic arc evaporation system. The effect of variation in the bias voltage on the coating-substrate adhesion...
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MDPI AG
2020-02-01
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Online Access: | https://www.mdpi.com/2072-666X/11/2/166 |
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author | Tomáš Vopát Martin Sahul Marián Haršáni Ondřej Vortel Tomáš Zlámal |
author_facet | Tomáš Vopát Martin Sahul Marián Haršáni Ondřej Vortel Tomáš Zlámal |
author_sort | Tomáš Vopát |
collection | DOAJ |
description | Nanocomposite AlCrSiN hard coatings were deposited on the cemented carbide substrates with a negative substrate bias voltage within the range of −80 to −120 V using the cathodic arc evaporation system. The effect of variation in the bias voltage on the coating-substrate adhesion and nanohardness was investigated. It was clear that if bias voltage increased, nanohardness increased in the range from −80 V to −120 V. The coating deposited at the bias voltage of −120 V had the highest nanohardness (37.7 ± 1.5 GPa). The samples were prepared by brushing and wet microblasting to finish a surface and prepare the required cutting edge radii for the tool life cutting tests and the coating adhesion observation. The indents after the static Mercedes indentation test were studied by scanning the electron microscope to evaluate the coating-substrate adhesion. The longer time of edge preparation with surface finishing led to a slight deterioration in the adhesion strength of the coating to the substrate. The tool wear of cemented carbide turning inserts was studied on the turning centre during the tool life cutting test. The tested workpiece material was austenitic stainless steel. The cemented carbide turning inserts with larger cutting edge radius were worn out faster during the machining. Meanwhile, the tool life increased when the cutting edge radius was smaller. |
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issn | 2072-666X |
language | English |
last_indexed | 2024-12-19T06:54:44Z |
publishDate | 2020-02-01 |
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spelling | doaj.art-cc24e3906e9c443993312579284033972022-12-21T20:31:35ZengMDPI AGMicromachines2072-666X2020-02-0111216610.3390/mi11020166mi11020166The Tool Life and Coating-Substrate Adhesion of AlCrSiN-Coated Carbide Cutting Tools Prepared by LARC with Respect to the Edge Preparation and Surface FinishingTomáš Vopát0Martin Sahul1Marián Haršáni2Ondřej Vortel3Tomáš Zlámal4Faculty of Materials Science and Technology in Trnava, Institute of Production Technologies, Slovak University of Technology in Bratislava, Jána Bottu 25, 917 24 Trnava, SlovakiaFaculty of Materials Science and Technology in Trnava, Institute of Material Science, Slovak University of Technology in Bratislava, Jána Bottu 25, 917 24 Trnava, SlovakiaFaculty of Materials Science and Technology in Trnava, Institute of Material Science, Slovak University of Technology in Bratislava, Jána Bottu 25, 917 24 Trnava, SlovakiaFaculty of Mechanical Engineering, Department of Machining, Assembly and Engineering Metrology, Technical Univesity of Ostrava, 17. listopadu 15, 708 33 Ostrava-Poruba, Czech RepublicFaculty of Mechanical Engineering, Department of Machining Technology, Technická 2, Brno University of Technology, Královo Pole, 616 69 Brno, Czech RepublicNanocomposite AlCrSiN hard coatings were deposited on the cemented carbide substrates with a negative substrate bias voltage within the range of −80 to −120 V using the cathodic arc evaporation system. The effect of variation in the bias voltage on the coating-substrate adhesion and nanohardness was investigated. It was clear that if bias voltage increased, nanohardness increased in the range from −80 V to −120 V. The coating deposited at the bias voltage of −120 V had the highest nanohardness (37.7 ± 1.5 GPa). The samples were prepared by brushing and wet microblasting to finish a surface and prepare the required cutting edge radii for the tool life cutting tests and the coating adhesion observation. The indents after the static Mercedes indentation test were studied by scanning the electron microscope to evaluate the coating-substrate adhesion. The longer time of edge preparation with surface finishing led to a slight deterioration in the adhesion strength of the coating to the substrate. The tool wear of cemented carbide turning inserts was studied on the turning centre during the tool life cutting test. The tested workpiece material was austenitic stainless steel. The cemented carbide turning inserts with larger cutting edge radius were worn out faster during the machining. Meanwhile, the tool life increased when the cutting edge radius was smaller.https://www.mdpi.com/2072-666X/11/2/166tool lifetool wearedge preparationcutting edge radiussurface finishnanocomposite hard coatingcoating-substrate adhesionbrushingwet microblasting |
spellingShingle | Tomáš Vopát Martin Sahul Marián Haršáni Ondřej Vortel Tomáš Zlámal The Tool Life and Coating-Substrate Adhesion of AlCrSiN-Coated Carbide Cutting Tools Prepared by LARC with Respect to the Edge Preparation and Surface Finishing Micromachines tool life tool wear edge preparation cutting edge radius surface finish nanocomposite hard coating coating-substrate adhesion brushing wet microblasting |
title | The Tool Life and Coating-Substrate Adhesion of AlCrSiN-Coated Carbide Cutting Tools Prepared by LARC with Respect to the Edge Preparation and Surface Finishing |
title_full | The Tool Life and Coating-Substrate Adhesion of AlCrSiN-Coated Carbide Cutting Tools Prepared by LARC with Respect to the Edge Preparation and Surface Finishing |
title_fullStr | The Tool Life and Coating-Substrate Adhesion of AlCrSiN-Coated Carbide Cutting Tools Prepared by LARC with Respect to the Edge Preparation and Surface Finishing |
title_full_unstemmed | The Tool Life and Coating-Substrate Adhesion of AlCrSiN-Coated Carbide Cutting Tools Prepared by LARC with Respect to the Edge Preparation and Surface Finishing |
title_short | The Tool Life and Coating-Substrate Adhesion of AlCrSiN-Coated Carbide Cutting Tools Prepared by LARC with Respect to the Edge Preparation and Surface Finishing |
title_sort | tool life and coating substrate adhesion of alcrsin coated carbide cutting tools prepared by larc with respect to the edge preparation and surface finishing |
topic | tool life tool wear edge preparation cutting edge radius surface finish nanocomposite hard coating coating-substrate adhesion brushing wet microblasting |
url | https://www.mdpi.com/2072-666X/11/2/166 |
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