Effects of Sintering Temperature Variation on Synthesis of Glass-Ceramic Phosphor Using Rice Husk Ash as Silica Source.

In this study, the authors attempted to propose the very first study on fabrication and characterization of zinc-boro-silicate (ZBS) glass-ceramics derived from the ternary zinc-boro-silicate (ZnO)(BO)(RHA) glass system through a conventional melt-quenching method by incorporating rice husk ash (RHA) as the silica (SiO) source, followed by a sintering process. Optimization of sintering condition has densified the sintered samples while embedded beta willemite (β-ZnSiO) and alpha willemite (-ZnSiO) were proven in X-ray diffraction (XRD) analysis. Field emission scanning electron microscopy (FESEM) has shown the distribution of willemite crystals in rhombohedral shape crystals and successfully form closely-packed grains due to intense crystallization.