Journal
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
Volume 73, Issue 2, Pages 332-340Publisher
SPRINGER
DOI: 10.1007/s10971-014-3537-8
Keywords
Ti/Ru/Ir; Sol-gel; Ternary mixed oxide; Titanium
Categories
Funding
- Iran National Science Foundation
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Anodes activated with noble metal oxides have many applications. Actually, such anodes are among dimensionally stable anodes with oxide coating. In this study, various layers of ternary metal oxide coatings containing Ti, Ru, Ir were developed by sol-gel method. To show the ideal amount of layers, the corrosion behavior of coatings was studied by anodic polarization and cyclic voltammetry tests. The lifetime of anodes was determined using accelerated corrosion test. The morphology of coatings was examined by field emission scanning electron microscopy and transmission electron microscopy. Phase and elemental analysis were done using X-ray diffraction and Energy Dispersive X-Ray, respectively. The results showed that cracks with a width of 150-900 nm were developed in all coatings. The distribution of cracks in the coating with six layers was more uniform in terms of morphology. The coating was composed of needle-shaped crystals with a size of 10-50 nm. It was also observed that increasing number of layers, facilitates the chlorine emission from electrode surface.
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