Sponsor:
The authors would like to thank the funding provided for this research
by the Regional Government of Madrid (program MULTIMATCHALLENGE-
CM, ref. S2013/MIT-2862), the Spanish Government
through the Ramón y Cajal contract RYC-2014-15014 and by the
Institute of Alvaro Alonso Barba (IAAB) of the University Carlos III of
Madrid for the research stay of two months in CMEMS-UMINHO
(University of Minho). This study was partially supported by FCT with
the reference project UID/EEA/04436/2013, by FEDER funds through
the COMPETE 2020 – Programa Operacional Competitividade e
Internacionalização (POCI) with the reference project POCI-01-0145-
FEDER-006941.
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 asCorrosion 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.[+][-]