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Article

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

1
Departamento de Biomateriales Cerámicos y Metálicos, Centro de Biomateriales, Universidad de La Habana, La Habana 6323, Cuba
2
Departamento de Ingeniería y Ciencia de los Materiales y el Transporte, Escuela Politécnica Superior, Universidad de Sevilla, 41011 Sevilla, Spain
3
Instituto de Ciencia de Materiales de Sevilla (CSIC-US), 41011 Sevilla, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Eric Hug
Metals 2021, 11(2), 313; https://doi.org/10.3390/met11020313
Received: 24 January 2021 / Revised: 6 February 2021 / Accepted: 8 February 2021 / Published: 11 February 2021
Ti6Al4V samples, obtained by selective laser melting (SLM), were subjected to successive treatments: acid etching, chemical oxidation in hydrogen peroxide solution and thermochemical processing. The effect of temperature and time of acid etching on the surface roughness, morphology, topography and chemical and phase composition after the thermochemical treatment was studied. The surfaces were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and contact profilometry. The temperature used in the acid etching had a greater influence on the surface features of the samples than the time. Acid etching provided the original SLM surface with a new topography prior to oxidation and thermochemical treatments. A nanostructure was observed on the surfaces after the full process, both on their protrusions and pores previously formed during the acid etching. After the thermochemical treatment, the samples etched at 40 °C showed macrostructures with additional submicro and nanoscale topographies. When a temperature of 80 °C was used, the presence of micropores and a thicker anatase layer, detectable by X-ray diffraction, were also observed. These surfaces are expected to generate greater levels of bioactivity and high biomechanics fixation of implants as well as better resistance to fatigue. View Full-Text
Keywords: selective laser melting; Ti6Al4V; acid etching; chemical oxidation; thermochemical treatment; surface features selective laser melting; Ti6Al4V; acid etching; chemical oxidation; thermochemical treatment; surface features
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MDPI and ACS Style

González, J.E.; Armas, G.d.; Negrin, J.; Beltrán, A.M.; Trueba, P.; Gotor, F.J.; Peón, E.; Torres, Y. Influence of Successive Chemical and Thermochemical Treatments on Surface Features of Ti6Al4V Samples Manufactured by SLM. Metals 2021, 11, 313. https://doi.org/10.3390/met11020313

AMA Style

González JE, Armas Gd, Negrin J, Beltrán AM, Trueba P, Gotor FJ, Peón E, Torres Y. Influence of Successive Chemical and Thermochemical Treatments on Surface Features of Ti6Al4V Samples Manufactured by SLM. Metals. 2021; 11(2):313. https://doi.org/10.3390/met11020313

Chicago/Turabian Style

González, Jesús E., Gabriela d. Armas, Jeidy Negrin, Ana M. Beltrán, Paloma Trueba, Francisco J. Gotor, Eduardo Peón, and Yadir Torres. 2021. "Influence of Successive Chemical and Thermochemical Treatments on Surface Features of Ti6Al4V Samples Manufactured by SLM" Metals 11, no. 2: 313. https://doi.org/10.3390/met11020313

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