Glass-forming ability of soda lime borate liquids

► The glass forming ability (GFA) of a series of soda lime borate liquids has been studied using the calorimetric method. ► GFA decreases when Na2O is substituted for B2O3, implying the network connectivity controls GFA of the studied systems. ► There is no direct link between the composition dependence of liquid fragility and that of GFA. ► The glass stability (GS) against crystallization can be enhanced by lowering the prior cooling rate of the melt.