Study of the effect of nanosecond laser texturing on the corrosion behavior of Ti6Al4V and Ti6Al4V parts produced by powder bed fusion
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2022
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BRAZIL MRS MEETING, 20th
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Biomedical industry demands surfaces that facilitate osteointegration, especially in
implants. Currently, this functional surface is obtained by coating the metallic implant with
ceramic materials, such as hydroxyapatite, or with polymeric materials. However, these
layers can suffer from detachment, residual stresses, and cracks during the process,
favoring implant corrosion. Laser texturing is a surface structuring process that can
improve osteointegration by generating functional hydrophilic surfaces. An alternative for
the manufacture of components used as biomaterials can be additive manufacturing,
followed by laser texturing. The 3D manufacturing process allows obtaining parts with
complex geometry, weight reduction, and customized products that can serve the dental and
biomedical sector. Combining metallic additive manufacturing with laser texturing would be
an alternative in obtaining parts with functional hydrophilic surfaces, which improves
osteointegration. In both cases, a careful study of the corrosion behavior of the surfaces
obtained is necessary, since the evolution of this phenomenon can influence the
osteointegration of the implant, causing the release of metal ions in the body and even the
rejection of the component. This study compared the corrosion behavior of laser texturing
Ti6Al4V components with components manufactured using laser power bed fusion of the
same alloy followed by laser texturing. The Ti6Al4V components by laser powder bed
melting were obtained by varying the scanning speed and power using a Yb laser. For laser
texturing of the surfaces, a fiber optic laser of Yb was used. The corrosion behavior of the
surfaces was evaluated by electrochemical impedance spectroscopy and characterized by
SEM. The wettability was determined by the sessile drop method. The results showed the
differences in the corrosion behavior of the surfaces produced by the different methods, in
the hydrophilic character and microstructure.
Como referenciar
QUEIROZ, FERNANDA M.; RIBEIRO, GLEICY de L.X.; CASTRO, RENATO S. de; SANTOS, ROGERIO G. dos; PORTO, JOAQUIM F.B.; SILVA, LEANDRO S. da; VIEIRA, ALEXANDRE; SANTOS, LUIS U. dos; TERADA, MAYSA; ROSSI, WAGNER de; COSTA, ISOLDA. Study of the effect of nanosecond laser texturing on the corrosion behavior of Ti6Al4V and Ti6Al4V parts produced by powder bed fusion. In: BRAZIL MRS MEETING, 20th, September 25-29, 2022, Foz do Iguaçu, PR. Abstract... São Carlos, SP: Aptor Software, 2022. Disponível em: http://repositorio.ipen.br/handle/123456789/33553. Acesso em: 10 May 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.