Abstract: Fluorozirconate glass is a good kind of optical material. The paper systematically researchedthe effects of PbF₄, LiF, SrF₂, HU₄, NaF and YF₃ on the refractive index, glass-forming ability andthermal expansion coeffeciency of the fluorozirconate glass. The results show that PbF₂ and LiFcan increase the refractive index of the glass, however, SrF₂ and HfF₄ can decrease the refractiveiudex. According the DTA of the glass, the optimum concentrations of these fluorides in whichthe glass has good glass-forming ability were determined.

Key words: fluorozirconate glass, refractive index, glass-forming ability, ability, thermal expasion