Fig. 8: Post-immersion SEM-EDX analysis of streaked and unstreaked areas from smoothly-polished samples. | npj Materials Degradation

Fig. 8: Post-immersion SEM-EDX analysis of streaked and unstreaked areas from smoothly-polished samples.

From: Intermetallic particles trigger streaking corrosion in AA7075-T6

Fig. 8: Post-immersion SEM-EDX analysis of streaked and unstreaked areas from smoothly-polished samples.

a In situ microscopy image of streaking corrosion and post-immersion secondary electron images of the streaking corrosion patches show the corroded areas are composed of dissolved and undissolved sections. The images also show that the depth of streaking is visibly less than trenching around intermetallic particles. b Post-immersion EDX mapping of streaked areas show no detectable difference compared to the unstreaked areas.

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