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Title: Effect of NaCI addition on the voltage noise characteristics during oxidation ofiron in NaNO3-NaNO2 melt
Authors: Singh, I B
Venkatachari, G
Issue Date: May-1997
Publisher: NISCAIR-CSIR, India
Abstract: Effect of NaCI addition on the oxidation of iron in NaNO3-NaNO2 melt at 250°C has been studied by electrochemical voltage noise analysis and harmonic current measurements. The voltage fluctuations, electrochemical noise power and oxidation rate were tend to decrease with immersion time in the NaNO3-NaNO2 melt due to the growth of compact oxide film. This trend was maintained even after the addition of 2% NaCl. However, a rapid increase of voltage fluctuations, noise power and oxidation rate were observed after the addition of 3% NaCI due to breakdown of the compactness of oxide film. The compact nature of oxide film and their breakdown has also been confirmed by recording power spectral density plots in particular melt system.
Page(s): 163-166
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.04(3) [May 1997]

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