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| Naji, M. |
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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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| Casati, R. |
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| Kočí, Jan | Prague |
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| Azam, Siraj |
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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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| Rignanese, Gian-Marco |
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Castro, Richard De Medeiros
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Publications (6/6 displayed)
- 2023Evaluation of FeCrNiMo coating Tribological performance produced through laser directed energy deposition sliding under biodegradable oils
- 2023Effect of tungsten carbide reinforcement phase on the abrasive wear performance of metal matrix composites deposited by laser claddingcitations
- 2022Tribological performance of Ni-Cr-B-Si coatings deposited via laser cladding processcitations
- 2021Laser remelting of WC-CoCr surface coated by HVOF: Effect on the tribological properties and energy efficiencycitations
- 2020Abrasion resistance of Ni-Cr-B-Si coating deposited by laser cladding processcitations
- 2018Avaliação tribológica de óleos hidráulicos biodegradável e mineral com deslizamento entre as ligas de Cu-Zn e WC-CoCrcitations
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article
Evaluation of FeCrNiMo coating Tribological performance produced through laser directed energy deposition sliding under biodegradable oils
Abstract
Improving the performance of mechanical components and reducing machine energy consumption involves the correct selection of lubricants and their contact surfaces. The use of biodegradable hydraulic fluids along with less environmental impact surfaces is one example. In this sense, the following paper aims to analyze the behavior of mineral oil (HLP) and biodegradable oils (HEPR and HETG) submitted to a sliding with pins manufactured in PTFE and Al2O3 against a flat substrate coated with FeCrNiMo by the Laser Directed Energy Deposition (L-DED) process. Coatings by this replacement deposition process are proving to be a promising alternative in the replacement of hard chromium, a harmful material to human health. The slip tests were performed in a pin-on-disk tribometer using different loads in order to assess lubrication and wear regimes. In the tests, the average of the friction coefficients (μ) obtained was μHETG = 0.072, μHLP = 0.026 and μHEPR = 0.011, besides well-defined lubrication regimes. In the wear analysis, it was observed that the highest concentrations of Zn and P additives, found in HEPR, reduced surface damage. The main wear mechanisms identified were scratching, microcracking, microploughing and detachment. Consistent with the results mentioned, the largest volume removed from the coating was with the use of HETG vegetable oil, about 41% more than HEPR.