Effect of Nucleating Agent on Crystallization Behavior and Kinetics of Blast Furnace Slag Glass Ceramics

Taken Tangshan iron and steel blast furnace slag as the main raw material,Cr₂O₃,TiO₂,Fe₂O₃ and P₂O₅ nucleating agent had been added with a certain proportion of other raw materials,and the blast furnace slag microcrystalline glass had been prepared by melting method. Differential thermal analyzer（SEM） and electron scanning microscope（SEM） were used to investigate the effect of nucleating agents on the crystallization behavior of glass ceramics. The results show that 2% Cr₂O₃ and 8% P₂O₅ can form microcrystalline glass with fine grain and uniform distribution. Addition of 8% TiO₂ and 6% Fe₂O₃ can not result in an ideal microcrystalline glass.