Venkatachari, G. and Marikkannu, C. and Muralidharan, S. and Balakrishnan, K. (1996) Voltage noise measurements during staining of 6061 aluminium alloy exposed to humid atmospheres. Bulletin of Electrochemistry, 12 (1-2). pp. 77-79. ISSN 0256-1654

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Electrochemical noise generation during staining of 6061 aluminium alloy exposed to 60 to 100% RH at 323K has been measured. The noise power values (v)2 were obtained from the auto correlation of voltage time data. On exposure of aluminium alloy to 80 to 100% RH considerable staining have been observed. During staining the noise power values were found to increase from 10-6 (V)2 to 10-4 (V)2 and considerable weight gain was also observed. However on exposure of alluminium alloy to 60% RH no staining was observed and the noise power value remained around to 10 -8 (V)2. After passivation treatment of alluminium alloy in 50% HNO3 or with chromate treatment the noise power value remained at a low level of 10-8 (V)2 till the protective power of coating remained unaffected.

Item Type: Article
Uncontrolled Keywords: Noise measurement and staining aluminium
Subjects: Corrosion Science and Engineering
Depositing User: ttbdar CECRI
Date Deposited: 23 May 2012 09:21
Last Modified: 23 May 2012 09:21

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