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M Vahidifar
Articles written in Bulletin of Materials Science
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Volume 33 Issue 4 August 2010 pp 469-474 Alloys and Steels
Effect of SiO$^{2-}_{3}$/OH– on plasma electrolytic oxidation of Ti–5Mo–4V–3Al
M Asadi Mehdi Attarchi M Vahidifar A Jafari
Plasma electrolyte oxidation (PEO) was utilized to produce thick films on titanium and Ti–5Mo–4V–3Al alloys by immersing them in various solutions of Na2SiO3 and KOH with different concentrations to investigate the effect of SiO$^{2-}_{3}$/OH– relations on the morphology and formed phases by utilizing SEM and XRD. Corrosion resistance is evaluated by open circuit potential (OCP) variation of samples in NaCl 3.5% and potentiodynamic polarization. The results show that the unstable film is formed by using more aggressive PEO electrolyte. By increasing this ratio, pore size varied from fine to coarse and the rate of corrosion decreased and OCP became more positive. The best protective film was formed in SiO$^{2-}_{3}$/OH– ratio of 1.
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Bulletin of Materials Science
Volume 46, 2023
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Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
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