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Electrochemical and Oxidation Behavior of Yttria Stabilized Zirconia Coating on Zircaloy-4 Synthesized via Sol-Gel Process
Joint Authors
Rashed, Gh. R.
Rezaee, S.
Golozar, M. A.
Source
International Journal of Corrosion
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-17
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Sol-gel 8 wt.% Yttria Stabilized Zirconia (YSZ) thin films were prepared on zirconium (zircaloy-4 alloy) by dip-coating technique followed by heat treating at various temperatures (200°C, 400°C, and 700°C) in order to improve both electrochemical corrosion and high temperature oxidation properties of the substrate.
Differential thermal analysis and thermogravimetric analysis (DTA-TG) revealed the coating formation process.
X-ray diffraction (XRD) was used to determine the crystalline phase structure transformation.
The morphological characterization of the coatings was carried out using scanning electron microscopy (SEM).
The electrochemical behavior of the coated and uncoated samples was investigated by means of open circuit potential, Tafel, and electrochemical impedance spectroscopy (EIS) in a 3.5 wt.% NaCl solution.
The homogeneity and surface appearance of coatings produced was affected by the heat treatment temperature.
According to the corrosion parameters, the YSZ coatings showed a considerable increase in the corrosion resistance, especially at higher heat treatment temperatures.
The coating with the best quality, from the surface and corrosion point of view, was subjected to oxidation test in air at 800°C.
The coated sample presented a 25% reduction in oxidation rate in comparison with bare substrate.
American Psychological Association (APA)
Rezaee, S.& Rashed, Gh. R.& Golozar, M. A.. 2013. Electrochemical and Oxidation Behavior of Yttria Stabilized Zirconia Coating on Zircaloy-4 Synthesized via Sol-Gel Process. International Journal of Corrosion،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-472827
Modern Language Association (MLA)
Rezaee, S.…[et al.]. Electrochemical and Oxidation Behavior of Yttria Stabilized Zirconia Coating on Zircaloy-4 Synthesized via Sol-Gel Process. International Journal of Corrosion No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-472827
American Medical Association (AMA)
Rezaee, S.& Rashed, Gh. R.& Golozar, M. A.. Electrochemical and Oxidation Behavior of Yttria Stabilized Zirconia Coating on Zircaloy-4 Synthesized via Sol-Gel Process. International Journal of Corrosion. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-472827
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-472827