HEAT-TREATMENT OF ANODIC OXIDE-FILMS ON TITANIUM AND NIOBIUM

Heat treatment of the oxide films in air makes them more conducting. T his effect depends on the time and temperature. Capacitance of titaniu m oxide films as well as niobium oxide films increases on annealing, T he conductivity patterns before and after heating show similar trends and are of two types, the one associated with high conductance and low er rate of change of capacitance with increase in temperature and the other associated with low conductance and changes capacitance more rap idly with increase in temperature.