Influence of Successive Chemical and Thermochemical Treatments on Surface Features of Ti6Al4V Samples Manufactured by SLM

González, J D; Armas, Gabriela de; Negrin, Jeidy; Beltrán, Ana M.; Trueba, Paloma; Gotor, F.J.; Peón, Eduardo; Torres, Yadir

doi:10.3390/met11020313

Cited by 17 publications

(9 citation statements)

References 62 publications

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“…Tables 3 to 5: Experimental data of 3D-printed dental implants with a diameter of 3.4 mm, 3D-printed dental implants with a diameter of 4.3 mm and 3D-printed dogbone tensile specimen. Currently, most studies pay more attention to lower roughness values of < 5 μm, since it is suggested that Ra values of 3 to 5 μm will be more favourable for osteoblast responses than smooth surfaces with Ra values < 1 μm [29]- [31]. In the present study, dental implants and dogbone tensile specimens were fabricated using the DMLS technique.…”

Section: Resultsmentioning

confidence: 99%

Experimental Investigation into the Effect of Surface Roughness and Mechanical Properties of 3D-Printed Titanium Ti-64 ELI after Heat Treatment

Lebea¹,

Ngwangwa²,

Desai³

et al. 2021

Preprint

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The initial stability after implantology is paramount to the survival of the dental implant and the surface roughness of the implant plays a vital role in this regard. The characterisation of surface topography is a complicated branch of metrology, with a huge range of parameters available. Each parameter contributes significantly towards the survival and mechanical properties of 3D-printed specimens. The purpose of this paper is to experimentally investigate the effect of surface roughness of 3D-printed dental implants and 3D-printed dogbone tensile samples under areal height (Ra) parameters, amplitude parameters (average of ordinates), skewness (Rsk) parameters and mechanical properties. During the experiment, roughness values were analysed and the results showed that the skewness parameter demonstrated a minimum value of 0.596%. The 3D-printed dental implant recorded Ra with a 3.4 mm diameter at 43.23% and the 3D-printed dental implant with a 4.3 mm diameter at 26.18%. Samples with a complex geometry exhibited a higher roughness surface, which was the greatest difficulty of additive manufacturing when evaluating surface finish. The results show that when the ultimate tensile stress (UTS) decreases from 968.35 MPa to 955.25 MPa, Ra increases by 1.4% and when UTS increases to 961.18 MPa, Ra increases by 0.6%. When the cycle decreases from 262142 to 137433, Ra shows that less than a 90.74% increase in cycle is obtained. For 3D-printed dental implants, the higher the surface roughness, the lower the mechanical properties, ultimately leading to decreased implant life and poor performance.

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Section: Resultsmentioning

confidence: 99%

Experimental Investigation into the Effect of Surface Roughness and Mechanical Properties of 3D-Printed Titanium Ti-64 ELI after Heat Treatment

Lebea¹,

Ngwangwa²,

Desai³

et al. 2021

Preprint

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“…- [31] Ti-Ta porous coating on Ti6Al4V by DED Anodic oxidation DED allows the production of a porous coating of Ti-Ta alloy on Ti6Al4V substrate. The elastic modulus is reduced compared to Ti6Al4V.…”

Section: Ti6al4v-slmmentioning

confidence: 99%

Porous Titanium by Additive Manufacturing: A Focus on Surfaces for Bone Integration

Ferraris

Spriano

2021

Metals

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Additive manufacturing (AM) is gaining increasing interest for realization of customized porous titanium constructs for biomedical applications and, in particular, for bone substitution. As first, the present review gives a short introduction on the techniques used for additive manufacturing of Ti/Ti-Alloys (Direct Energy Deposition—DED, Selective Laser Melting—SLM and Electron Beam Melting—EBM) and on the main bulk properties of additively manufactured titanium porous structures. Then, it discusses the main advancements in surface modifications of additively manufactured titanium constructs for bone contact applications. Even if specific surface modifications of constructs from AM are currently not widely explored, it is a critical open issue for application in biomedical implants. Some thermal, chemical, electrochemical, and hydrothermal treatments as well as different coatings are here described. The main aim of these treatments is the development of surface micro/nano textures, specific ion release, and addition of bioactivity to induce bone bonding and antibacterial activity. Physicochemical characterizations, in vitro bioactivity tests, protein absorption, in vitro (cellular/bacterial) and in vivo tests reported in the literature for bare and surface modified AM Ti-based constructs are here reviewed. Future perspectives for development of innovative additively manufactured titanium implants are also discussed.

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“…In addition, Ti is featured by its light weight or density (4.5 g/cm 3 ) compared to 7.9 g/cm 3 for 316 stainless steel and 8.3 g/cm 3 for cast CoCrMo alloys. Ti6Al4V is known for its excellent pitting corrosion resistance, tensile strength, biocompatibility, and excellent mechanical requirements [7]. Nevertheless, the high values of Young's modulus presented by fully dense Ti may show stress shielding that often evolves into bone resorption of the tissue surrounding the implant [8].…”

Section: Introductionmentioning

confidence: 99%

Biofunctionalization of Porous Ti Substrates Coated with Ag Nanoparticles for Potential Antibacterial Behavior

Gaviria

Alcudia

Begines

et al. 2021

Metals

Self Cite

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Ti prosthesis have shown better biological compatibility, mechanical performance, and resistance to corrosion in cases of bone replacements. Nevertheless, fully dense Ti in connection with bone-host tissues show stress-shielding phenomenon that, together with the development of frequent undesirable microbial infections, may lead to implant failures. To overcome these issues, the present study aimed at the development of a novel combination of a chemically functionalized porous Ti substrate with a potentially therapeutic AgNPs coating. Fully dense and porous Ti substrates (30 and 60 vol.%, 100–200 and 355–500 μm, as spacer particles) were studied. Ti surface was treated with acid or basic medium followed by silanization and deposition of AgNPs by “submerged” and “in situ” methods. In general, for similar porosity, mechanical resistance decreased as pore size increased. Acidic reagent and submerged methodology were the best combination for fully dense Ti substrates. Hence, they were also employed for porous Ti substrates. Depending on the porosity of the substrates, variations can be observed both in the size and degree of agglomeration of the deposited AgNPs, entailing differences in the antibacterial behavior of the samples.

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Influence of Successive Chemical and Thermochemical Treatments on Surface Features of Ti6Al4V Samples Manufactured by SLM

Cited by 17 publications

References 62 publications

Experimental Investigation into the Effect of Surface Roughness and Mechanical Properties of 3D-Printed Titanium Ti-64 ELI after Heat Treatment

Experimental Investigation into the Effect of Surface Roughness and Mechanical Properties of 3D-Printed Titanium Ti-64 ELI after Heat Treatment

Porous Titanium by Additive Manufacturing: A Focus on Surfaces for Bone Integration

Biofunctionalization of Porous Ti Substrates Coated with Ag Nanoparticles for Potential Antibacterial Behavior

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