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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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Kononenko, Denys |
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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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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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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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Manfredi, D.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (36/36 displayed)
- 2024Processability and Microstructural Evolution of W360 Hot Work Tool Steel by Directed Energy Depositioncitations
- 2023Improvement in the PBF-LB/M processing of the Al-Si-Cu-Mg composition through the use of pre-alloyed powdercitations
- 2022Influence of surface finishing and heat treatments on the corrosion resistance of the LPBF-produced Ti-6Al-4V alloy for biomedical applicationscitations
- 2022In situ alloying of AlSi10Mg-5 wt% Ni through laser powder bed fusion and subsequent heat treatmentcitations
- 2022Influence of surface finishing and heat treatments on the corrosion resistance of LPBF-produced Ti-6Al-4V alloy for biomedical applicationscitations
- 2021An automatic on top analysis of single scan tracks to evaluate the laser powder bed fusion building parameterscitations
- 2021Wear and corrosion resistance of alsi10mg–cp–ti metal–metal composite materials produced by electro-sinter-forgingcitations
- 2021Effect of heat treatment on microstructure and selective corrosion of LPBF-AlSi10Mg by means of SKPFM and exo-electron emissioncitations
- 2021Strengthening strategies for an Al alloy processed by in-situ alloying during laser powder bed fusioncitations
- 2021Failure mode analysis on compression of lattice structures with internal cooling channels produced by laser powder bed fusioncitations
- 20213D Printing of a Monolithic K/Ka-Band Dual-Circular Polarization Antenna-Feeding Networkcitations
- 2020Effect of heat treatments on the microstructure of Inconel 939 alloy processed by laser powder bed fusion
- 2020Alloying AlSi10Mg and Cu powders in laser Single Scan Tracks, melt spinning, and Laser Powder Bed Fusioncitations
- 2020Banded microstructures in rapidly solidified Al-3 wt% Ercitations
- 2020Effect of heat treatment on microstructure and oxidation properties of Inconel 625 processed by LPBFcitations
- 2020A357 alloy by LPBF for Industry Applicationscitations
- 2020Understanding Friction and Wear Behavior at the Nanoscale of Aluminum Matrix Composites Produced by Laser Powder Bed Fusioncitations
- 2019Electromagnetic and mechanical analyses of a 3D-printed ka-band integrated twist and orthomode transducercitations
- 2019Influence of cryorolling on properties of L-PBF 316l stainless steel tested at 298K and 77Kcitations
- 2019Corrosion behavior of AlSi10Mg alloy produced by laser powder bed fusion under chloride exposurecitations
- 2019Evaluation of corrosion resistance of alloy 625 obtained by laser powder bed fusioncitations
- 2019Corrosion resistance in chloride solution of the AlSi10Mg alloy obtained by means of LPBFcitations
- 2019Statistical approach for electrochemical evaluation of the effect of heat treatments on the corrosion resistance of AlSi10Mg alloy by laser powder bed fusioncitations
- 2019Integration of microwave components through selective laser melting
- 2019New aluminum alloys specifically designed for laser powder bed fusion: A reviewcitations
- 20183-d printing of high-performance feed horns from Ku-to V-bandscitations
- 2018Integration of an H -Plane Bend, a Twist, and a Filter in Ku/K-Band Through Additive Manufacturingcitations
- 2018Nanoindentation test conducted on single scan tracks for the development of new multi-principal element alloys by selective laser melting
- 2018Additive manufacturing of antenna-feed chainscitations
- 2018Additive Manufacturing Technology for High Performances Feed Horncitations
- 2018Additive manufacturing of Ka-band dual-polarization waveguide componentscitations
- 2017Selective laser melting of chemical pure copper powders
- 2017Experimental research activity on additive manufacturing of microwave passive waveguide componentscitations
- 2017Corrosion behavior of aluminum-silicon alloys obtained by Direct Metal Laser Sintering
- 2014Influence of post‐processing operations on mechanical properties of AlSi10Mg Parts by DMLScitations
- 2013Influence of process parameters on surface roughness of aluminum parts produced by DMLScitations
Places of action
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article
Influence of surface finishing and heat treatments on the corrosion resistance of the LPBF-produced Ti-6Al-4V alloy for biomedical applications
Abstract
Additive manufacturing (AM) technologies are gaining increasing attraction for biomedical applications due to the granted customizability and optimal surface topography for osteointegration. Ti-6Al-4V is one of the most promising materials due to its biocompatibility. However, excessive ions release can occur, leading to a relevant immunologic response in the surrounding tissues. Despite the corrosion behavior of the conventionally-manufactured material being well known, it should be assessed for AM-processed components, as the effect of the unique superficial and microstructural features granted by the process is still quite unknown. The aim of this paper is the electrochemical evaluation of the passive current density of the laser powder bed fusion (LPBF)-processed Ti-6Al-4V alloy via potentiostatic tests, carried out at typical in-service potentials for biomedical implants. This parameter is correlated with the ion release rate of the alloy, a fundamental phenomenon to address to prevent possible inflammations caused by the implant. Different manufacturing conditions (surface finishing, heat treatment) and exposure time (0, 60 and 6000 hours) were considered. The importance of performing these measurements over a long period (> 8 months) was demonstrated. In fact, despite the initial current densities being significantly affected by the surface and microstructural differences, the ion release rates converged for long-time exposures. The results also underlined the good corrosion resistance of the material. Poor corrosion performances, alongside with significant current densities development, were observed in the as-built condition. A pickling treatment demonstrated to mitigate such effect without compromising the unique surface finishing granted by the manufacturing technology.