Interactions between wear and corrosion on cast and sintered Ti-12Nb alloy in comparison with the commercial Ti-6Al-4V alloy

•The processing method influenced the degradation behavior of Ti-12Nb alloy.•Sintered Ti-12Nb alloy presented better corrosion resistance in 9 g/l NaCl at 37 ± 2 °C.•Both Ti-12Nb alloys showed an antagonistic effect between wear and corrosion. This work investigates the corrosion and tribocorrosion...

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Bibliographic Details
Published in:Corrosion science 2020-11, Vol.176, p.108925, Article 108925
Main Authors: Çaha, I., Alves, A.C., Chirico, C., Tsipas, S.A., Rodrigues, I.R., Pinto, A.M.P., Grandini, C.R., Rocha, L.A., Gordo, E., Toptan, F.
Format: Article
Language:English
Subjects:
Alloys
Body temperature
Casting
Casting alloys
Corrosion
Corrosion resistance
Corrosive wear
Open circuit voltage
Powder metallurgy
Sintering
Sliding
Titanium alloys
Titanium base alloys
Tribocorrosion
Vanadium
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Summary:•The processing method influenced the degradation behavior of Ti-12Nb alloy.•Sintered Ti-12Nb alloy presented better corrosion resistance in 9 g/l NaCl at 37 ± 2 °C.•Both Ti-12Nb alloys showed an antagonistic effect between wear and corrosion. This work investigates the corrosion and tribocorrosion behavior of α + β Ti-12Nb alloy processed by casting and sintering, in 9 g/l NaCl solution at body temperature, and compares the results with the commercial Ti-6Al-4 V alloy. Different electrochemical techniques were used to access the corrosion behavior. Tribocorrosion behavior was studied at open circuit potential under continuous and intermittent sliding, and at anodic potentiostatic condition under continuous sliding. Results revealed that Ti-12Nb alloys presented similar tribocorrosion behavior although the sintered one exhibited a better corrosion behavior. Nevertheless, Ti-6Al-4 V presented better overall degradation resistance than both Ti-12Nb alloys.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2020.108925