Surface modification of Ti-6Al-4V alloys manufactured by selective laser melting: Microstructural and tribo-mechanical characterization

Torres, Yadir; Sarria, Perla; Gotor, F.J.; Gutiérrez, Eliel; Peón, Eduardo; Beltrán, Ana M.; González, J D

doi:10.1016/j.surfcoat.2018.05.015

Cited by 34 publications

(16 citation statements)

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“…Among them, sol-gel processes can be a potential alternative to increase the bioactivity and biocompatibility degree of implanted metal surfaces. 9,10 The sol-gel process uses a versatile synthesis method to produce new materials, whereas the chemistry of this process is based on hydrolysis and on condensation reactions of metal alkoxides; 11 besides, it allows controlling both the chemistry and the molecular level of the structure when synthesis parameters, such as the amount of precursors, solvents, catalyst and processing temperatures, change. The remarkable advantages of sol-gel processing allow the production of organic-inorganic hybrid coatings 12…”

Section: Introductionmentioning

confidence: 99%

PMMA-SiO2 Organic-Inorganic Hybrid Coating Application to Ti-6Al-4V Alloy Prepared through the Sol-Gel Method

Santana

Kunst

Oliveira

et al. 2020

J. Braz. Chem. Soc.

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Siloxane-poly(methyl methacrylate) (PMMA) hybrid was synthesized based on the sol-gel method and applied to Ti-6Al-4V through dip-coating. The structural feature of the hybrid was subjected to Fourier-transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TG); its morphological properties were analyzed through scanning electron microscope (SEM), energy dispersive spectrometry (EDS), atomic force microscopy (AFM) and contact angle. The electrochemical behavior and corrosion resistance of both the hybrid coating and the uncoated substrate were investigated based on electrochemical impedance spectroscopy (EIS) and scanning vibrating electrode technique (SVET). Results showed homogeneous coating formation due to the rigid hybrid network formed during polymerization, hydrolysis and condensation reactions. This outcome suggested interaction between the organic (methyl methacrylate (MMA)) and inorganic (tetraethyl orthosilicate (TEOS)) phases, which was favored by the coupling agent (3-(trimethoxysilyl)propyl methacrylate (TMSM)). The S0M (PMMA-SiO 2 hybrid Ti-6Al-4V coated alloy) film presented regular topography and adherence to the substrate. Electrochemical simulated body fluid (SBF) tests showed that the hybrid coating presented better barrier properties (168 h of the immersion time) than the uncoated substrate, fact that makes it an interesting material for anti-corrosive applications in biomaterials.

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Section: Introductionmentioning

confidence: 99%

PMMA-SiO2 Organic-Inorganic Hybrid Coating Application to Ti-6Al-4V Alloy Prepared through the Sol-Gel Method

Santana

Kunst

Oliveira

et al. 2020

J. Braz. Chem. Soc.

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“…Possibilities of changing/processing the surface of different biometallics using laser radiation are numerous and consequently various modern surface treatment techniques, such as ion implantation or coating, have lost their precedence in favor of laser processing [7,8,9]. Nowadays, lasers find widespread application in the medical device industry.…”

Section: Laser Surface Modificationmentioning

confidence: 99%

“…Torres et al [8] showed that in the case of the Ti-6Al-4V alloy, laser treatment in combination with different chemical and thermo-chemical treatments (etching and chemical oxidation) can enhance the surface bioactivity due to the formation of a stable titanium oxide layer. The laser modified surfaces manifested a rough surface covered with submicro-and nanopores.…”

Section: Laser Modifications Of Implant Materialsmentioning

confidence: 99%

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Laser surface modification of metallic implant materials

et al. 2019

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Metallic biomaterials are most commonly used as hard-tissue replacements because of their favorable mechanical features and excellent biocompatibility. The objective of this paper is to present an overview of diverse surface modification techniques, with a special emphasis on the laser surface modification method, as well as diverse characterization techniques used for investigating the impact of the surface modification process on metallic implant materials' properties. Moreover, the effect of laser radiation on the surface its and mechanical characteristics, as well as on the structure of metallic bioimplants, is presented. The study of influence of high-intensity laser radiation on metallic materials' surface includes primarily investigations of the surface morphology modifications and specific surface structure formation since their presence enables enhanced osseointegration.

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“…Post processing is required for porous and grainy structures. After the sintering process may result in wraps surface, hence large flat surface cannot be produced using SLS [52].…”

Section: Dinesh Babu and Devaprakasammentioning

confidence: 99%