The PCT curve presents the thermodynamic characteristics of hydrogen s
torage alloys, which consist of hydrogen storage capacity, the tempera
ture, and the equilibrium presure in hydriding and dehydriding, the ma
thematical modeling of which is important for the application of hydro
gen storage alloys in various techniques. Mathematical modeling of the
PCT curve of hydrogen storage alloys was studied. It has been shown t
hat the calculated PCT curves are in good agreement with the experimen
tal curves, and a lot of physical parameters, which are very useful, c
an be estimated from the modeling.