Die Oxydation von Intermetallischen Zirkoniumlegierungen in Sauerstoff und Wasserdampf bei 400 deg. C

The oxidation of intermetallic zirconium alloys in oxygen and steam at 400°CThe author has studied the oxidation behaviour of some intermetallic zirconium alloys in oxygen and steam. Depending on their behaviour the alloys can be divided into three categories: 1Selective oxidation of alloying elements in the case of the alloys ZrAl3 et ZrSi2Selective oxidation of Zr produced by rearrangement and enrichment of alloying elements in the case of Zr4Sn, ZrCU3 ZrNi, ZrV2 and ZrMo2/3Oxidation control by mixed oxides in the case of ZrNb and ZrTaThe mechanism of the corrosion of ZrAl3 and ZrSi2 in steam is interpreted in terms of the selective attack of Al and Si respectively.