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The Effects of aging time on the structural and electrochemical properties of composite coatings on Cp-Ti substrate

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Abstract

TiO2-SiO2 composite films were produced on commercially pure titanium (CP-Ti) substrate by a sol–gel method to investigate the behavior of sol aging time and its potential effects on the structural and electrochemical properties of composite coatings. Anatase-TiO2 and quartz-SiO2 peaks were observed on all composite coated samples according to XRD results. It was observed that the average grain size increased with sol aging time. Also, the average smallest grain size was seen at composite coatings prepared from unaged sol according to the width of the peaks. Electrochemical behavior of coated samples was mainly investigated by potentiodynamic polarization and Electrochemical Impedance Spectroscopy (EIS) in Simulated Body Fluid (SBF) solution. In corrosion tests, the composite coatings showed better anti-corrosion behavior than that of uncoated samples. In addition, the corrosion properties of the composite films were considerably affected by sol aging time. Corrosion resistance of coatings decreased with increasing aging time and the best result was obtained from composite coatings prepared from unaged sol.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Faculty of Engineering, Ataturk University, 25240, Erzurum, Turkey

    Onur Çomakli & Ayhan Çelik

  2. High Technology Research Centre, Erzurum Technical University, 25070, Erzurum, Turkey

    Mustafa Yazici

  3. Faculty of Engineering and Architecture, Department of Chemical Engineering, Erzurum Technical University, 25070, Erzurum, Turkey

    Tuba Yetim

  4. Faculty of Engineering and Architecture, Department of Mechanical Engineering, Erzurum Technical University, 25070, Erzurum, Turkey

    Ali Fatih Yetim

Authors
  1. Onur Çomakli
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  2. Mustafa Yazici
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  3. Tuba Yetim
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  4. Ali Fatih Yetim
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  5. Ayhan Çelik
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Correspondence to Onur Çomakli.

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Çomakli, O., Yazici, M., Yetim, T. et al. The Effects of aging time on the structural and electrochemical properties of composite coatings on Cp-Ti substrate. J Bionic Eng 14, 532–539 (2017). https://doi.org/10.1016/S1672-6529(16)60419-5

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