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| CURRENT OSCILLATIONS OBSERVED ON SUS 304 STAINLESS STEEL ROTATING DISK ELECTRODE IN SULFURIC ACID SOLUTIONS |
| LUO Wei-yin OGURA Koutarou NAKAYAMA Masahare (Department of Applied Chemistry; Yamaguchi University; Ube 755; Japan) |
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Abstract Current oscillations were observed upon anodic polarization of SUS 304 steel rotating disk electrode in H2SO4 solutions. The potential region in which the current oscillations took place and the oscillation amplitude were found to be dependent on temperature, solution concentration, potential sweep rate, and electrode rotation rate. The current oscillation under linear potential sweep occurred when the temperature was higher than 35.0℃, concentration of H2SO4 was higher than 2.50mol/L and electrode rotation rate was slower than 1000 rpm. With increasing potential sweep rate, the potential range in which the current oscillation took place and oscillations amplitude were decreased. The occurrence of the current oscillations was rationalized in terms of a periodic sequence of dissolution and formation of the FeCr2O7 and NiCr2O7 films.
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Received: 25 April 1998
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Cite this article:
LUO Wei-yin OGURA Koutarou NAKAYAMA Masahare (Department of Applied Chemistry; Yamaguchi University; Ube 755; Japan). CURRENT OSCILLATIONS OBSERVED ON SUS 304 STAINLESS STEEL ROTATING DISK ELECTRODE IN SULFURIC ACID SOLUTIONS. J Chin Soc Corr Pro, 1998, 18(2): 155-160.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1998/V18/I2/155
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