Vaporisation of ZrF4 from solid ZrF4 was investigated at various tempe
ratures. The rates of ZrF4 vaporisation during the melting of ZBLAN fl
uoride glass were determined at various temperatures. The vaporisation
of ZrF4 from solid ZrF4 and from the glass mix was found to obey zero
order and second order kinetics, respectively. The activation energy
of ZrF4 vaporisation from solid ZrF4 and from the glass mix were also
determined.