The Effects of Aging Time on the Structural and Electrochemical Properties of Composite Coatings on CP-Ti Substrate

TiO2-SiO2 composite films were produced on commercially pure titanium （CP-Ti） substrate by a sol-gel method to in- vestigate 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 observ...

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Bibliographic Details
Published in:Journal of bionics engineering 2017-07, Vol.14 (3), p.532-539
Main Authors: Çomakli, Onur, Yazici, Mustafa, Yetim, Tuba, Yetim, Ali Fatih, Çelik, Ayhan
Format: Article
Language:English
Subjects:
Artificial Intelligence
Biochemical Engineering
Bioinformatics
bioinspired TiO2–SiO2 coatings
Biomaterials
Biomedical Engineering and Bioengineering
Biomedical Engineering/Biotechnology
CP-Ti substrate
electrochemical properties
Engineering
sol–gel
TiO2-SiO2
复合涂层
平均晶粒尺寸
时效时间
溶胶-凝胶法
电化学性能
电化学行为
镀层结构
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Summary:TiO2-SiO2 composite films were produced on commercially pure titanium （CP-Ti） substrate by a sol-gel method to in- vestigate 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.
ISSN:1672-6529
2543-2141
DOI:10.1016/S1672-6529(16)60419-5