Effect of fluoride on susceptibility of the Zr-Nb alloys to high temperature oxidation

It presents data on the effect of fluoride impurities on the behavior of zirconium alloys with niobium in loss-of-coolant accident (LOCA), in which the cladding material is exposed to steam at high temperatures. It is shown that the difference in behavior at the high-temperature oxidation of zirconium-niobium alloys which made from zirconium sponge and electrolytic Zr connected with the process of obtaining different types of zirconium and content of impurities in these materials.