Corrosion behaviour of Ti‐Al‐xV‐yFe experimental alloys in 3.5wt% NaCl and 3.5M H2SO4

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 new...

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Published inMaterials and corrosion Vol. 69; no. 6; pp. 770 - 780
Main Authors Bodunrin, Michael O, Chown, Lesley H, Josias W van der Merwe, Alaneme, Kenneth K
Format Journal Article
LanguageEnglish
Published Weinheim Wiley Subscription Services, Inc 01.06.2018
Subjects
Alloy development
Chemical industry
Chloride resistance
Corrosion resistance
Corrosion resistant alloys
Iron
Open circuit voltage
Repair & maintenance
Sodium chloride
Sulfuric acid
Titanium alloys
Titanium base alloys
Vanadium
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Summary: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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0947-5117
1521-4176
DOI:10.1002/maco.201709709