Features of anodic niobium oxide formation in aqueous-organic electrolyte solutions (influence of ethylene glycol)
The formation of anodic oxide films (AOFs) on valve metals in electrolytes with different compositions has received little attention. Earlier investigations dealt mainly with AOF growth and properties in aqueous solutions of mineral and organic acids and salts. Less research was done on electrolytes containing aqueous-organic solvents. An empirically formulated electrolyte with a water/ethylene glycol mixture as the solvent is widely employed in forming the dielectric for semiconductor oxide capacitors (SOCs). The mechanism by which ethylene glycol acts on AOF properties is still not wholly clear. It has been found that AOFs produced in an ethylene glycol electrolyte are bilaminar, with the outer layer being less corrosion-resistant. The degradation resistance and crystalline phase content of AOFs have also been studied. The objective of the present study was to examine the effect of ethylene glycol as solvent on AOF formation on niobium.
- OSTI ID:
- 175762
- Journal Information:
- Russian Journal of Applied Chemistry, Vol. 64, Issue 8; Other Information: PBD: 10 Feb 1992; TN: Translated from Zhurnal Prikladnoi Khimii; 64: No. 8, 1758-1761(Aug 1991)
- Country of Publication:
- United States
- Language:
- English
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