Research Article
Effects of M2+ (M = Ca, Sr, and Ba) Addition on Crystallization and Microstructure of SiO2-MgO-Al2O3-B2O3-K2O-F Glass
Figure 4
FESEM photomicrograph of (a) M-1, (b) M-2, (c) M-3, and (d) M-4 glass-ceramic specimens (chemically etched by immersion in 2 vol% aqueous HF solution for 5 minutes) heat-treated at 1050°C for 4 h.
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