Research Article

Characterization of Waste Material Derived Willemite-Based Glass-Ceramics Doped with Erbium

Figure 3

FESEM micrographs of willemite and Er3+ doped glass-ceramic pellets sintered 4 h at different temperatures: (a) willemite, (b) 700°C, (c) 800°C, (d) 900°C, (e) 1000°C, and (f) 1100°C.
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