Abstract

Abstract The effect on corrosion behavior of water temperature, uranium content, and oxygen content has been determined for zirconium 7 through 70 weight percent uranium alloys. Corrosion rates increased as water temperature increased from 500 to 680 F, as uranium alloy content increased, and in general as oxygen content in the alloys increased. The amount and distribution of epsilon phase present in alloys containing up through 55 weight percent uranium determined their corrosion behavior. The amount of alpha uranium controls the corrosion behavior of alloys containing more than 60 weight percent uranium. Increase in corrosion rates with increasing oxygen in alloys in the epsilon composition range of 45 to 55 weight percent uranium can be correlated with the effect of oxygen on the stability of the epsilon phase. Microstructures reveal an increase of a second phase (alpha zirconium) with increasing oxygen content. 6.3.20

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