Abstract
The corrosion behavior of Al3Ti-based intermetallic compounds was investigated under nuclear reactor normal operation conditions. The corrosion test was performed for Al–25Ti–10Cr and Al–21Ti–23Cr (at.%) in 633 K water and 673 K steam. The corroded surface was analyzed to identify the corrosion products. Both alloys showed a weight loss in 633 K water with no appreciable difference between the alloys. The corroded layer formed in water was shown to be the mixture of AlO(OH), TiO2, and Cr2O3. In 673 K steam, the corrosion behaviors of both alloys were similar with a small amount of weight gain. A thin, stable Al2O3 layer was formed on the surface as result of oxidation in 673 K steam.
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