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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/033/04/0469-0474

    • Keywords

       

      Corrosion; plasma electrolyte oxidation; titanium.

    • Abstract

       

      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.

    • Author Affiliations

       

      M Asadi1 2 Mehdi Attarchi1 M Vahidifar1 2 A Jafari1

      1. Materials Science and Engineering, Shahid Bahonar Kerman, Kerman, Iran
      2. Materials Science Department, Yazd Azad University, Yazd, Iran

    • Dates

       
      Published
      August 2010
      Manuscript received
      9 July 2008
      Manuscript revised
      31 July 2010

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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