Aging of Conductors: Diagram of Corrosion

corrosion

 

External indications of deterioration will not be visible until the conductor is severely corroded. Contamination is brought to the wire by precipitation. The aqueous chloride ions (Cl- ) react with the aluminium strands to form AlCl3 that corrodes the galvanizing from the steel. Aluminium in electrochemical contact with the exposed steel corrodes rapidly by galvanic coupling.

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