Corrosion and tribocorrosion behaviour of beta-type Ti-Nb and Ti-Mo surfaces designed by diffusion treatments for biomedical applications

Corrosion and tribocorrosion behaviour of modified Ti surfaces through thermochemical treatments has been studied. Electrochemical Impedance Spectroscopy (EIS) and reciprocating sliding tests using a ball-on-plate tribometer under 1 N load and alumina as counter-material were used to evaluate the in...

ver descrição completa

Detalhes bibliográficos
Autor principal: Urena, J. (author)
Outros Autores: Tsipas, S. (author), Pinto, A. M. P. (author), Toptan, Fatih (author), Gordo, E. (author), Jimenez-Morales, A. (author)
Formato: article
Idioma:eng
Publicado em: 2018
Assuntos:
beta-Gradient titanium
Powder technology
Nb and Mo surface treatments
Corrosion
Tribocorrosion
β-Gradient titanium
Science & Technology
Texto completo:http://hdl.handle.net/1822/66247
País:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/66247
Descrição
Resumo:Corrosion and tribocorrosion behaviour of modified Ti surfaces through thermochemical treatments has been studied. Electrochemical Impedance Spectroscopy (EIS) and reciprocating sliding tests using a ball-on-plate tribometer under 1 N load and alumina as counter-material were used to evaluate the influence of Nb and Mo on titanium corrosion and tribocorrosion properties.Ti-Nb and Ti-Mo surfaces exhibited better anticorrosive properties than CP-titanium. Under tribological action the modified Ti surfaces showed similar coefficient of friction and lower tendency to corrosion compared to CP-Ti. Furthermore, Nb diffusion increased the repassivation rate with respect to Ti and Ti-Mo surfaces due to its stable passive film.

Registos relacionados