Fig.6-9

Fig.6-9  Average corrosion rate change with the increasing corrosion time of each material and Al map of the oxide film/matrix cross-section in Alloy800H and 3Al Ferrite

The corrosion rate of 3Al Ferrite at 400 h was equivalent to that of SiC. The material cross-section after the corrosion test showed that unlike Alloy800H, an Al oxide film with a uniform thickness was observed.

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