Comparison of in vitro corrosion behaviour and biocompatibility of Ti-13Zr-13Nb and passivated 316L stainless steel coated with TiCN
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2005
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INTERNATIONAL CONGRESS OF MECHANICAL ENGINEERING, 18th
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Resumo
AISI 316L stainless steel finds widespread use as implant materials. However, it is prone to localized
attack in the body fluids. Titanium alloys have the highest corrosion resistance among the metallic materials used as
orthopaedic prostheses. Therefore, an implant material that unites the high surface stability of titanium alloys and the
low cost of the 316L is of great interest. TiCN films obtained by PVD processes present high wear and corrosion
resistances making them attractive materials for orthopaedic applications. However, there is little information about the
corrosion behaviour of TiCN-coated stainless steels in physiological solutions. In this study, 316L specimens were
passivated in nitric acid solution for 10 minutes and then coated with TiCN films produced by PVD process. The
corrosion resistance of the coated specimens was evaluated by Electrochemical Impedance Spectroscopy (EIS) and
potentiodynamic polarization tests after 28 days of immersion in Hanks' solution. The results were compared with those
obtained from bare, passivated, non passivated and TiCN-coated 316L steel, and bare Ti-13Zr-13Nb specimens. The
passivated and TiCN-coated 316L specimens presented corrosion resistance similar to that of bare 316L. The highest
corrosion resistance was obtained for Ti-13Zr-13Nb specimens. The in vitro biocompatibility of Ti-13Zr-13Nb and
TiCN-coated 316L was investigated using a citotoxicity assay. Both materials were not cytotoxic in the conditions
tested.
Como referenciar
ANTUNES, RENATO A.; ASSIS, SERGIO L. de; LORENZETTI, SOLANGE G.; HIGA, OLGA Z.; COSTA, ISOLDA. Comparison of in vitro corrosion behaviour and biocompatibility of Ti-13Zr-13Nb and passivated 316L stainless steel coated with TiCN. In: INTERNATIONAL CONGRESS OF MECHANICAL ENGINEERING, 18th, November 6-11, 2005, Ouro Preto, MG. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/32999. Acesso em: 13 Mar 2025.
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.