Effect of Current Density on the Anodic Behaviour of Zircaloy-4 and Niobium: A Comparitive Study

Abstract
Keywords
Introduction
Materials and Methods
Results
Discussion
Conclusion
Acknowledgement
Funding Sources
Conflict of Interest
Data Availability Statement
Ethics Statement
References

Article | Open Access

Effect of Current Density on the Anodic Behaviour of Zircaloy-4 and Niobium: A Comparitive Study

Volume 5, Number 2

V. Jeevana Jyothi¹* and Ch. Anjaneyulu²

*Department of Chemistry, R.B.V.R.R.Women?s College, Narayanguda (India).

Department of Chemistry, University College for Women, Osmania University, Hyderabad - 500 007 (India).

DOI : http://dx.doi.org/10.13005/msri/050226

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ABSTRACT:

The kinetics of anodic oxidation of zircaloy-4 and niobium have been studied at current densities ranging from 4 to 10 mA cm -2 at room temperature in order to investigate the dependence of ionic current density on the field across the oxide film. Thickness of the anodic films were estimated from capacitance data. The formation rate, current efficiency and differential field were found to increase with increase in the ionic current density for zircaloy-4 and niobium. From linear plots of logarithm of ionic current density vs differential field, and applying the Cabrera-Mott theory, the half-jump distance and height of energy barrier are deduced and compared.

KEYWORDS:

Anodization; current density; differential field; Cabrera-Mott theory; zircaloy-4; niobium

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