AKID, Robert and MILLS, D. J. (2001). A comparison between conventional macroscopic and novel microscopic scanning electrochemical methods to evaluate galvanic corrosion. Corrosion science, 43 (7), 1203-1216.Full text not available from this repository.
The scanning reference electrode technique (SRET) has been used to examine corrosion in a galvanic ‘Kelocouple’ system, being that of an explosively bonded joint comprising a tri-metallic sandwich of steel/aluminium/aluminium alloy. Quantitative results of local current densities in 4% sea water at room temperature have been obtained. These have been compared with results from two conventional macroscopic techniques for measuring galvanic current, namely zero resistance ammetry and polarisation curves. The SRET results were found to be at least an order of magnitude higher than the average results obtained using the macroscopic methods. Comparison between SRET current densities and corrosion (as obtained by the amount of aluminium in solution) showed good agreement. Whether attack predominated on the aluminium (nearer the steel) or the aluminium alloy (further from the steel) depended on the concentration of the sea water.
|Additional Information:||Copyright © Elsevier B.V.|
|Research Institute, Centre or Group:||Materials and Engineering Research Institute > Structural Materials and Integrity Research Centre > Centre for Corrosion Technology|
|Depositing User:||Ann Betterton|
|Date Deposited:||10 Jan 2008|
|Last Modified:||09 Jul 2010 15:39|
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