Abstract
The corrosion behaviour of Ti‐6Al‐xV‐yFe (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.
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