THE USE OF aluminium alloy anodes for sacrificial protection of marine and offshore structure is well established. In some cases, for example during installation, the alloys are prone to be heated due to the welding of the anode to the structure. This paper concentrates on identifying the cause for the deterioration of the performance of the anode, which undergo such heating. Samples of the aluminium alloy anode were subjected to different heat treatments. Along with X-ray-diffraction and metallographic studies. The results were then correlated with those of the untreated anode, to understand the behaviour of the anode under heat treatment.
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