Microstructure, Microhardness, and Wear Properties of Cobalt Alloy Electrodes Coated with TiO<sub>2</sub> Nanoparticles

In this paper, the influence of TiO<sub>2</sub> nanoparticle coating on cobalt-based electrodes was studied. Different coating treatment times were applied, and the results were compared to the hard-faced layer obtained with unmodified electrodes. The hard facing was done in three layers...

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Main Authors:	Sebastian Balos, Petar Janjatovic, Miroslav Dramicanin, Danka Labus Zlatanovic, Branka Pilic, Pavel Hanus, Lucyna Jaworska
Format:	Article
Language:	English
Published:	MDPI AG 2019-11-01
Series:	Metals
Subjects:	hard facing cobalt alloys wear nano-particle coating
Online Access:	https://www.mdpi.com/2075-4701/9/11/1186

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spelling	doaj-ff789a7e56a34569aa7c6e11e4da42f12020-11-25T01:41:44ZengMDPI AGMetals2075-47012019-11-01911118610.3390/met9111186met9111186Microstructure, Microhardness, and Wear Properties of Cobalt Alloy Electrodes Coated with TiO<sub>2</sub> NanoparticlesSebastian Balos0Petar Janjatovic1Miroslav Dramicanin2Danka Labus Zlatanovic3Branka Pilic4Pavel Hanus5Lucyna Jaworska6Faculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, SerbiaFaculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, SerbiaFaculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, SerbiaFaculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, SerbiaFaculty of Technology, University of Novi Sad, 21000 Novi Sad, SerbiaDepartment of Material Science, Technical University of Liberec, Liberec 461 17, Czech RepublicLukasiewitz- Research Network-Institute of Advanced Manufacturing Technology, Centre for Materials Research and Sintering Technology, 30-011 Krakow, PolandIn this paper, the influence of TiO<sub>2</sub> nanoparticle coating on cobalt-based electrodes was studied. Different coating treatment times were applied, and the results were compared to the hard-faced layer obtained with unmodified electrodes. The hard facing was done in three layers, the first being a Ni-based interlayer, followed by two layers of corrosion and wear-resistant Co-based Stellite 6 alloy. Pin-on-disc wear testing was applied, along with the metallographic study and hardness measurements of the hard-faced layers. Furthermore, energy-dispersive X-ray spectroscopy (EDS) analysis was conducted. It was found that the microstructural properties, as well as microhardness profiles, are modified in hard-faced layers obtained with modified electrodes. Interdendritic distances are altered, as are the dendrite growth directions. Titanium oxides are formed, which, along with the present complex carbides, increase the wear resistance of the hard-faced layers compared to layers obtained with untreated electrodes.https://www.mdpi.com/2075-4701/9/11/1186hard facingcobalt alloyswearnano-particle coating
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Sebastian Balos Petar Janjatovic Miroslav Dramicanin Danka Labus Zlatanovic Branka Pilic Pavel Hanus Lucyna Jaworska
spellingShingle	Sebastian Balos Petar Janjatovic Miroslav Dramicanin Danka Labus Zlatanovic Branka Pilic Pavel Hanus Lucyna Jaworska Microstructure, Microhardness, and Wear Properties of Cobalt Alloy Electrodes Coated with TiO<sub>2</sub> Nanoparticles Metals hard facing cobalt alloys wear nano-particle coating
author_facet	Sebastian Balos Petar Janjatovic Miroslav Dramicanin Danka Labus Zlatanovic Branka Pilic Pavel Hanus Lucyna Jaworska
author_sort	Sebastian Balos
title	Microstructure, Microhardness, and Wear Properties of Cobalt Alloy Electrodes Coated with TiO<sub>2</sub> Nanoparticles
title_short	Microstructure, Microhardness, and Wear Properties of Cobalt Alloy Electrodes Coated with TiO<sub>2</sub> Nanoparticles
title_full	Microstructure, Microhardness, and Wear Properties of Cobalt Alloy Electrodes Coated with TiO<sub>2</sub> Nanoparticles
title_fullStr	Microstructure, Microhardness, and Wear Properties of Cobalt Alloy Electrodes Coated with TiO<sub>2</sub> Nanoparticles
title_full_unstemmed	Microstructure, Microhardness, and Wear Properties of Cobalt Alloy Electrodes Coated with TiO<sub>2</sub> Nanoparticles
title_sort	microstructure, microhardness, and wear properties of cobalt alloy electrodes coated with tio<sub>2</sub> nanoparticles
publisher	MDPI AG
series	Metals
issn	2075-4701
publishDate	2019-11-01
description	In this paper, the influence of TiO<sub>2</sub> nanoparticle coating on cobalt-based electrodes was studied. Different coating treatment times were applied, and the results were compared to the hard-faced layer obtained with unmodified electrodes. The hard facing was done in three layers, the first being a Ni-based interlayer, followed by two layers of corrosion and wear-resistant Co-based Stellite 6 alloy. Pin-on-disc wear testing was applied, along with the metallographic study and hardness measurements of the hard-faced layers. Furthermore, energy-dispersive X-ray spectroscopy (EDS) analysis was conducted. It was found that the microstructural properties, as well as microhardness profiles, are modified in hard-faced layers obtained with modified electrodes. Interdendritic distances are altered, as are the dendrite growth directions. Titanium oxides are formed, which, along with the present complex carbides, increase the wear resistance of the hard-faced layers compared to layers obtained with untreated electrodes.
topic	hard facing cobalt alloys wear nano-particle coating
url	https://www.mdpi.com/2075-4701/9/11/1186
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Microstructure, Microhardness, and Wear Properties of Cobalt Alloy Electrodes Coated with TiO<sub>2</sub> Nanoparticles

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