The effect of the ZnO/MgO ratio on the crystallization and optical properties of glass-ceramic glazes from the SiO₂–Al₂O₃–ZnO–MgO–CaO–K₂O–Na₂O–B₂O₃ system was studied. The glazes with different ZnO/MgO ratios were characterized by differential scanning calorimetry, X-ray powder diffraction, Raman spectroscopy, scanning electron microscopy, energy dispersive spectroscopy analysis and a spectrophotometer. The results reveal that the A glaze without ZnO content contains forsterite and sapphirine. The B and C glazes with intermediate ZnO/MgO ratio contain enstatite and spinel solid solution. The D to F glazes with higher ZnO/MgO ratio crystallize spinel solid solution as the only crystalline phase. The amount of spinel solid solution, lightness values (L*), gloss values and the reflectance of the studied glazes increase with the ZnO/MgO ratio.

中文翻译：

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ZnO / MgO比对尖晶石不透明釉料结晶和光学性能的影响

ZnO / MgO比对SiO ₂ -Al ₂ O ₃ -ZnO-MgO-CaO-K ₂ O-Na ₂ O-B ₂ O ₃的玻璃陶瓷釉的结晶和光学性能的影响系统进行了研究。通过差示扫描量热法，X射线粉末衍射，拉曼光谱，扫描电子显微镜，能量色散光谱分析和分光光度计对具有不同ZnO / MgO比的釉料进行表征。结果表明，不含ZnO的A釉含有镁橄榄石和蓝宝石。ZnO / MgO比率中等的B和C釉含有顽辉石和尖晶石固溶体。具有较高ZnO / MgO比的D到F釉将尖晶石固溶体结晶为唯一的结晶相。尖晶石固溶体的量，亮度值（L *），光泽度值和所研究釉料的反射​​率随ZnO / MgO比的增加而增加。