Hydrogen Induced Disproportionation of ZrCo at Constant Temperatu in Hydrogen Atmosphere

To understand hydrogen induced disproportionation of ZrCo, the kinetics of disproportionation was studied in the presence of an excess amount of deuterium in a closed system as a function of temperature in the range from 673 to 873K. It was observed that the disproportionation occurred and produced ZrD2 and ZrCo2 after the given induction period. The reaction rate became faster the temperature increased up to 773K, but slowed down at higher temperatures. A similar temperature dependence was observed in cyclic heating-cooling experiments. It appears very possible that the hydrogen soluted in ZrCo phase plays an important role regarding disproportionation