It has been shown previously that the kinetics of anodic film growth on Ta, Nb and Zr often depend strongly on the nature of the electrolyte. This work is an attempt to resolve this anomaly and the inconsistencies in the reported structures of the oxide layers. Electron diffraction showed the anodic
Spontaneous and anodic oxidation of Tantalum and Zirconium in phosphate solutions
โ Scribed by I. A. Ammar; I. K. Ismail
- Publisher
- John Wiley and Sons
- Year
- 1972
- Tongue
- German
- Weight
- 612 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0947-5117
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The anodic films formed on tantalum in many non-aqueous solutions have been found to consist of two layers. Next to the metal there is a layer of Ta206 with the same characteristics as that of films formed in aqueous electrolytes, while between the TaeOb film and the solution there is a layer which
Anodic charging curves have been measured by the galvanostatic technique on Bi in O-05 M solutions of NalSOc, NalCOI and NaOH at 30ยฐC. Oxide iilms can be grown to 100 V and more. The nature of the fihn depends on the pH and the type of anion present. Formation rates are highest in sulphate solutions
The anodic oxidation of some olefins has been investigated at platinum and carbon rod anodes at 25ยฐC. Polarographic investigation in acetonitrile shows that highly conjugated olefins (polyenes) are oxidized in reversible l-e oxidation waves, whereas the other olefins show irreversible 2-e oxidation