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Corrosion behaviour of Ti‐Al‐ x V‐ y Fe experimental alloys in 3.5 wt% NaCl and 3.5 M H 2 SO 4
Author(s) -
Bodunrin Michael O.,
Chown Lesley H.,
van der Merwe Josias W.,
Alaneme Kenneth K.
Publication year - 2018
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201709709
Subject(s) - corrosion , vanadium , materials science , alloy , metallurgy , sodium , chloride , electrochemistry , nuclear chemistry , chemistry , electrode
The corrosion behaviour of Ti‐6Al‐ x V‐ y Fe (where x + y = 4; x = 0–3; and y = 1–4) experimental alloys in comparison with commercial Ti‐6Al‐4V alloy was investigated in sodium chloride and sulphuric acid solutions. Iron, a less expensive beta stabilising element was substituted for vanadium in the newly developed alloys in order to assess the influence of iron addition on the corrosion performance of the alloys. Electrochemical parameters were obtained using open circuit potential and potentiodynamic polarisation measurements. The results show that partial replacement of vanadium with 2–3 wt% iron yielded excellent corrosion resistance in 3.5 wt% sodium chloride. The experimental alloys have better corrosion resistance than the commercial Ti‐6Al‐4V alloy in 3.5 M sulphuric acid.