Crystallization Kinetics of Lithia-Silica Glasses: Effect of Composition and Nucleating Agent

The kinetics of crystallization of a 25Li₂O · 75SiO₂ (wt%) glass doped with Pt, Cu, Au, TiO₂, and P₂O₅ were studied using nonisothermal techniques. The activation energy, E , and the frequency factor, v , for the overall crystallization process depended directly on the critical cooling rate for the glass formation, R_c , of these glasses. The crystallization kinetics of several other glasses in the lithia-silica system were also studied as a function of composition, critical cooling rate, and liquidus temperature, T_m. E and v for these glasses were more dependent on the liquidus temperature than on R_c .