Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 101, Issue 4, Pages 1754-1764Publisher
WILEY
DOI: 10.1111/jace.15321
Keywords
crystallization; glass-ceramic; opaque glazes; optical properties; spinel
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Funding
- National Natural Science Foundation of China [51472092]
- National Key Research and Development Plan of China [2017YFB0703202]
- Industry-Academic-Research Collaborative Innovation Major Project of Guangzhou, China [201704030095]
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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.
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