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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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Janka, Leo
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Topics
Publications (6/6 displayed)
- 2022Studies on the phase formation of cobalt contacted with zinc vapourcitations
- 2018Thermally Sprayed Cr3C2-NiCr Coatings: Improving the Abrasion Resistance
- 2017HVOF- and HVAF-sprayed Cr3C2-NiCr coatings deposited from feedstock powders of spherical morphology: Microstructure formation and high-stress abrasive wear resistance up to 800 °Ccitations
- 2016Improving the toughness of thermally sprayed Cr 3C 2-NiCr hardmetal coatings by laser post-treatmentcitations
- 2016Influence of heat treatment on the abrasive wear resistance of a Cr3C2-NiCr coating deposited by an ethene-fuelled HVOF spray process ; Influence of heat treatment on the abrasive wear of HVOF thermally sprayed Cr3C2-NiCr coatingscitations
- 2015High Temperature 3-body Abrasive Wear of HVOF and HVAF Sprayed Cr3C2-NiCr Coatings
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document
High Temperature 3-body Abrasive Wear of HVOF and HVAF Sprayed Cr3C2-NiCr Coatings
Abstract
Wear protection is used in the industry to increase the lifetime of tribologically loaded components. One of the most widely applied wear protection is hard coating technology to protect the surface of a component from harsh wear conditions. Among them, thermal spraying is commonly adopted technique to deposit wear-resistant surface layers. <br/><br/>For wear protection at high service temperatures, chromium carbide based coatings deposited with high velocity oxy-fuel (HVOF) and high velocity air-fuel HVAF techniques are most suitable. <br/><br/>In this study, various Cr3C2-NiCr powders were sprayed with both HVOF and HVAF processes. The microstructure, porosity level and hardness values of the deposited coatings were measured. In addition, three-body abrasive wear resistance of these coatings was tested at 300°C, 500°C and 700°C. The wear tracks and cross sections of tested coatings were studied with scanning electron microscopy (SEM), in order to characterize the wear mechanisms at high <br/>temperatures. <br/><br/>The results show that at lower testing temperatures, powder selection and spraying process defines the wear rate of the coating. However, at maximum testing temperature, the differences in wear rates between tested coatings decreases. This is due to microstructural changes in coating at high temperatures.