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Effect of ZnO/MgO ratio on the crystallization and optical properties of spinel opaque glazes
Author(s) -
Cai Jingpei,
Lu Ming,
Guan Kang,
Li Weixiong,
He Fan,
Chen Peng,
Peng Cheng,
Rao Pinggen,
Wu Jianqing
Publication year - 2018
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.15321
Subject(s) - spinel , materials science , glaze , crystallization , anorthite , raman spectroscopy , mineralogy , solid solution , forsterite , differential scanning calorimetry , scanning electron microscope , analytical chemistry (journal) , ceramic , chemical engineering , metallurgy , chemistry , optics , composite material , physics , chromatography , engineering , thermodynamics
The effect of the ZnO/MgO ratio on the crystallization and optical properties of glass‐ceramic glazes from the SiO 2 –Al 2 O 3 –ZnO–MgO–CaO–K 2 O–Na 2 O–B 2 O 3 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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